Do-it-yourself greenhouse heating system: the best ways to heat greenhouses in winter How to make greenhouse heating with your own hands Apartment titans as greenhouse heating

The very word greenhouse hints directly and unambiguously: it should be warm there. But gloomy autumn or spring weather, short daylight hours, rain and snowmelt, piercing winds, damp and cold land - all this prevents it from justifying its name. That is why it is so important to take care of additional heat generation.

Peculiarities

Heating a greenhouse is fundamentally different from generating heat for a private house, bath or garage. There are many more options, and therefore it is extremely important to understand all their features. Most systems for heating greenhouses in winter can be done by hand. But it is important to remember that it will not work to control heating as carefully as at home - you cannot “live” in a greenhouse. That is why it is so important to create not just a powerful system, but one that eliminates temperature jerks.

When choosing the best option, pay attention to:

• energy efficiency;
• fire safety;
• formation of an optimal microclimate for plants;
• ease of installation and operation;
• system reliability.

Pros and cons of methods

There are many options for heating greenhouses. Let's consider each of them in more detail.

Electrical

The rising cost of all fuels is a trend that will continue for years and even decades to come. Therefore, among the electric methods of heating greenhouses, it is the film options that have a clear priority. The thinnest (a layer from 0.04 cm) film is a selection of current-transmitting strips, which are stacked according to a special pattern.

Its advantages are:

• the possibility of fixing on any solid foundation;
• ease of connection to the mains;
• application safety;
• excellent efficiency.

As for weaknesses, the minimum film thickness is the primary disadvantage. A small footprint translates into a high risk of damage. Errors in the use of infrared coatings may lead to the need to call the Ministry of Emergency Situations.

A more mechanically resistant option is a heating cable. It is able to work from 20 years in a row, the system is turned on both in a large area and in isolated areas.

Cable loops in the "warm floor" format are the best choice compared to water systems. To switch equipment from general heating to local, you only need to perform 1 action with the simplest control apparatus. The classic resistive cable is simple and cheap, the type of insulating sheath and external mechanical protection determines the period of operation.

A cable with one core will have to be laid so that both ends are near the power source. There is only one alternative - an additional cable to connect the far end.

Resistive type cables can adjust the generated amount of heat to the heating of the earth. But even on two adjacent beds, the actual temperature of the earth can vary quite a lot. Therefore, one has to either adjust everything “one size fits all”, or create complex expensive systems. Self-regulating cables are considered more modern, further saving current. Separate segments adapt heat generation to a specific task; if a certain fragment is already warmed up, the cable will not work there.

However, there is another option - using heating panels.

The panel method of heating greenhouses allows the installation of basic systems both near the ceiling and in the walls. The electric version of the panels performs well if the greenhouse area is limited to 25 m2. Over a larger area, they are not economical enough. You will need to stretch a serious cable route and spend a lot of energy. In addition, in many dacha associations and suburban settlements, the amount of current consumed per household is limited.

Speaking of heating with electricity, one cannot ignore such an option as a carbon cord. Compared to other cables, it has thermal inertia (it is 0), eliminates thermal shocks and helps to smoothly adjust conditions to emerging needs. Carbon cable is compatible with all known types of thermostats. Even when contour length adjustment is required, it is very easy and simple to do so.

The heat gun also has its advantages.

All electrical systems allow you to do without such an element as a chimney, but the “gun” is simpler than the rest in terms of device. The need for additional devices is completely eliminated. Start-up is carried out immediately after purchase

solar

Solar heating is considered the most natural solution, and modern methods allow it to be used both in the winter greenhouse and during the dark period of the day. It is imperative to create a greenhouse made of polycarbonate or glass. But you will have to form a structure in the form of an arch and maintain an orientation from east to west. To compensate for the short daylight hours, the greenhouse is equipped with a solar collector. It is formed in the form of insulated trenches, over which coarse sand is covered, an additional layer of soil is created.

If we compare such a scheme with air heating, it becomes clear that even the addition of improvised batteries does not increase efficiency enough. The intake of heated air provides both stronger and faster heating. The only problem is that a lot of fuel will be used up during the harsh winter.

biofuel

Since ancient times, farmers have used manure and a number of other organic substances to heat the land. During the decomposition of organic matter, a significant amount of heat is released. In many cases, preference is given to horse manure, which reaches 70 degrees in a week and maintains this figure for months to come. If there is no such significant need, a combination of it with straw is used. You can also mix manure with tree bark, sawdust and kitchen waste.

The disadvantages of biofuels are:

• subjective discomfort;
• risk of hygiene violations;
• unsuitable for heating for more than 4 months in a row.

Gas

In many summer cottages and country houses, they are trying to install gas stoves. And this suggests another way to correct the shortcomings of the greenhouse. The relative economy and simplicity of the system, the possibility of creating it from factory components - these are the main positive aspects. However, along with an accurate calculation, it will be necessary to prepare drawings and a package of permits. It is impossible to implement the project without the consent of the registering state bodies, and each alteration of it entails new costs.

Natural gas is flammable, explosive and toxic. When using it, the greenhouse becomes an unnecessarily humid place, and the concentration of carbon dioxide rises excessively. In addition, the saturation of the air with oxygen is reduced. Installation of ventilation further complicates the matter and requires additional calculation, and in winter the supply of fresh air devalues ​​the generated energy.

To reduce the cost of using gas a little, a monorail type of water heating is practiced (with the connection of a pipeline coiled into a ring to the pump).

Benefits of water

Heating a greenhouse with water heating is good because this option allows you to transfer heat to both the ground and the air.

Device

Unlike solar heat generation, it is possible to heat a large room according to a year-round scheme. Most importantly, the appearance of overdried air is completely excluded. But ventilation is critically important, since the stillness of the air can lead to overheating of the plants.

If you use the classic air circuit, it is technically simpler, but it consumes more energy and achieves an identical result at a noticeably higher cost.

Boiler selection

It is worth paying attention to the correct choice of the boiler so that it satisfactorily performs the tasks. In greenhouses, the installation of the same heating means as in houses and other buildings is practiced.

Greenhouse boilers can work on:

• waste from the timber industry;
• quality firewood;
• stone and brown coal;
• peat;
• household combustible litter;
• natural and liquefied gas;
• diesel fuel.

In many ways, the selection of a suitable system is determined by personal taste and the range of available energy sources. If the area has main gas pipelines, it is best to connect to them. Even bureaucratic bastions do not detract from the efficiency of the "blue fuel".

Boilers running on electricity or solid fuels can also be used. It is also necessary to carefully select the total capacity of the configuration so as not to freeze plantings and pay only for the heat that is really needed.

System installation

In addition to the boiler itself, pipelines and associated radiators will also have to be installed. The role of expanding tanks, chimneys and pumps that support circulation is great. Experts recommend forming a pair of heating circuits, and not one. One line is being built underground, which is made of plastic pipes that serve to migrate water with a temperature of about +30 degrees. It is required to lay such pipes as close to the roots as possible.

The second tier is located under the dome and is made on the basis of radiators. Most often, forced pump circulation is used in greenhouses, the gravitational flow of water is much less often used.

It is useful to supplement the heating circuit with thermal regulators that allow you to control the operation of the system in automatic mode. There will be no need to fear that during your long absence the greenhouse will overheat or overcool. Radiators in greenhouses are made of cast iron, aluminum or bimetallic.

For your information: there are systems in which there are no radiators at all. Then the space under the dome is heated using a round steel pipe of significant cross section. Expansion tanks are made either open or closed, but without them, unlike radiators, systems cannot be mounted. It turns out to save money when expanders are not bought, but cooked from metal sheets at home. As for the chimney, along with traditional brickwork, the creation of asbestos-cement channels and the use of steel pipes of round or square section is practiced.

If possible, it is recommended to take pipes in sandwich format. This is the most modern and practical solution. As for circulation pumps, here, too, not everything is as simple as most summer residents think. In budget-class greenhouses, if a pressure difference is provided, the gravitational pumping mode can also be used. Again, the choice of components is determined primarily by considerations of a material nature.

Furnaces or heating boilers are mainly placed in the vestibules of greenhouses, much less often they are given a place inside. The advantage of the external location is that the fuel stacked nearby does not interfere with movement in the greenhouse and does not create problems during operation. But internal placement also has its plus - it contributes to obtaining an additional amount of heat. We must weigh the pros and cons, evaluating the available space. Any boiler and any furnace definitely deserve the installation of a foundation.

If the stove is made of brick, a concrete base is poured under it. But it is enough to put metal heat generators on a sheet of steel or asbestos cement. In any case, you should take care of the most reliable installation of the system.

When installing the chimney, attention is paid to ensuring that any joint and turn are thoroughly sealed. Even the best cement cracks when heated significantly, so clay mortar should be used instead.

Connection to the inlet and outlet pipes of the boilers must be made using steel pipes strictly identical in diameter. Only after 1-1.5 m they can be replaced with plastic elements. Expansion tanks are placed in the highest places of buildings near furnaces and boilers. They must be preceded in the hydraulic circuit by an automatic blocking valve and a pressure gauge. When equipping radiators with cut-off valves, the inlet and outlet pipes must be separated by jumpers, then one stopped battery will not paralyze the entire system.

Soil heating is recommended to be provided with pipes based on cross-linked polyethylene. It is very good when a circuit that performs a similar task is supplemented by control automation. It should set the modes of operation corresponding to the specifics of certain plants. The very device of soil heating in greenhouses is quite close to the well-known "warm floor". Those who have already installed such a floor are unlikely to encounter special difficulties.

An insulating layer of waterproof material helps to avoid heat loss in the ground, most often it turns out to be polystyrene foam. Polyethylene film helps to enhance the waterproofing properties. The pipes are laid out on a sand cushion, which are pre-washed and compacted after backfilling. The thickness of the pillow should be 100-150 mm, this will ensure both uniform heating and zero risk of overdrying the earth; 300-350 mm of fertile soil must be placed above the heating layer.

oven

One of the popular solutions in summer cottages is stove heating of greenhouses, however, it also has its pros and cons.

Advantages and disadvantages

Suppliers of all boilers and other heating elements for the greenhouse industry focus on high efficiency. But modern stoves show an equally impressive efficiency. Therefore, it is naive to consider them frivolous rivals of boiler equipment.

• low cost of heating on solid fuel, wood or waste oil;
• simplicity of the system itself (ease of installation and maintenance);
• wide availability of necessary fuel.

Most often, iron stoves are installed in greenhouses, which warm up quickly, but quickly lose their heat charge. The disadvantage of such devices can be considered their "tendency" to dry the air. Even for plants that are accustomed to a dry and hot atmosphere, this is unlikely to be beneficial.

The use of water circuits in the form of radiators or registers helps to reduce the sharpness of temperature jumps.

Selection and installation of the furnace

The classic solid fuel potbelly stove is in demand mainly in greenhouses used in spring and summer.

Such structures are much more mobile than brick ones and remove the obligation to form a foundation. Another important circumstance is the minimum absorption of usable space. It is worth considering such advantages of metal stoves as low cost, the ability to install with your own hands without mastering the art of laying bricks. As for the weaknesses, it is necessary to mention the unsuitability of such stoves for automation. Chimneys from metal stoves should be placed at an angle of at least 15 degrees to enhance heating.

The metal pipe itself must be devoid of any insulation. But at the intersections with the top or wall, it is required to mount a box impervious to heat. Any steel oven must be installed in such a way that it is absolutely impossible for it to fall. Many times such events have caused fires and loss of property.

In regions with harsh weather conditions, charcoal stoves can be used, which produce more heat and retain it longer.

But the problem is the increased amount of waste and increased toxicity of combustion products when using coal fuel. Some of its types are capable of igniting on their own and deserve specific conditions when accumulated. In recent years, the popularity of stoves on sawdust or fuel briquettes has grown, which are becoming standard in design and emit a minimum amount of smoke.

But diesel ovens are not suitable at all. They emit poisonous smoke, besides, the slightest oversight can cause an emergency.

What to be guided by when choosing?

Speaking about the best projects for heating a greenhouse, it is worth noting that they do not include the use of convectors. By themselves, they heat only the air, and the soil layer remains cold, as it was before the system was turned on. Therefore, you have to take care of biological heating, which is extremely important during frosts in early spring. But there is a better strategy - this is the use of a system of heaters in the form of mats or cable laying (heating tapes). For winter, this solution is just perfect, especially because it allows you to warm only those places that are really needed.

The risk is that the slightest mistake in calculating the required temperature can burn the roots of plants. Geothermal heating of greenhouses in a small private household is completely unprofitable, since it requires very large investments in equipment and begins to give returns too late. The use of solar batteries or heating lamps is auxiliary. The former cope mainly with the effects of a cold summer, while others are needed to create optimal conditions for seedlings. Therefore, a serious choice arises only between electric heating (including infrared) and boilers (stoves) on various types of fuel.

Popular types

If you need to heat the greenhouse economically and simply without electricity and without gas, the choice naturally leans in favor of the biological method. Gardeners who are accustomed to working in the ground and in contact with dirty substances, such heating will not cause much mental anguish. In addition, it is completely environmentally friendly and allows you to heat the beds. In northern latitudes and in places with an unstable, unstable climatic regime, heating a greenhouse space can only be done relatively cheaply, because one or another fuel will still have to be spent. If the site is gasified and the greenhouse area is small, you can feed the burners or heaters from cylinders.

If the heated beds are very large, this method cannot be considered economical. You will have to connect to a centralized heating system for the site or look for other ways. The high cost of electric current, as already mentioned, has a slightly lesser effect on the costs of gardeners when choosing a rail scheme. Instead of an infrared film or a “warm floor”, you can still use water pipes connected to an electric boiler. But here the system becomes more complicated, and it is rarely possible to mount it without the help of professionals.

For water heating in a greenhouse with your own hands, see the following video.

In central Russia, it is simply impossible to get a good harvest of heat-loving crops without greenhouses. If they are also heated, then from the beginning of March you can plant seedlings of any plants in it, as well as get early greens on the table. Moreover, the installation of most do-it-yourself greenhouse heating systems is quite simple and does not require special skills.

Which way to choose?

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It all depends on the goals, the type of greenhouse, the type of crops, as well as financial capabilities. If you plan to grow vegetables or flowers in it throughout the year, you will need a fully insulated building that can be heated using infrared ceiling electric heaters, underfloor heating systems or a water circuit. To heat the greenhouse only in spring and autumn, it is enough to install a potbelly stove, a gas gun or lay biofuel (manure or plant residues) in the ground.

When calculating the required amount of heat, it must be taken into account that its consumption depends on the degree of insulation of the room and the ratio of the wall area to the soil area.

It does not make sense to heat a room that is blown from all sides. Therefore, before proceeding with the installation of greenhouse heating in winter, it should be carefully insulated. For this you will need:

This method of heating provides uniform heating of both the soil and the air. Another advantage is the creation of an optimal microclimate in the room - the air does not dry out with such a heating system. Heating in a similar way is possible with the help of firewood, peat, gas, coal, or even the development of automotive fuel. Therefore, you can choose the best option, taking into account the cost of energy in a particular region.

How to make water heating of the greenhouse? Such a heating system consists of:

• boiler or furnace
• expansion tank, serving to store water
• radiators
• pipeline
• pump: since it is rather problematic to lower the heating boiler in the greenhouse below the ground level, the circulation of water through the pipes is forced
• chimney

Even with a circulation pump, the pipeline in such a system is best placed at a slight slope. In this case, even with a temporary failure of the pumping system, the heating will continue to function.

To calculate the heat output of radiators, the formula is used:

P = S * 120,

S- the area of ​​the greenhouse (with a standard wall height of 3 m, the calculation of the volume of the room is not required).

For example, for heating a greenhouse with a size of 3x8 m, its area will be 3 * 8 = 24 square meters. m. We find the required thermal power: 24 * 120 = 2880 watts. You can specify this parameter for one section of the radiator in the data sheet.

Stove heating

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Furnace heating of the greenhouse

So that heating costs do not “eat up” the lion's share of the profit from the sale of grown products, when choosing the type of boiler or stove, one should take into account the cost of fuel in a particular region of residence. Take care also of an effective room insulation system.

Brick structures are more complex in execution. It is difficult to build them yourself without experience. Plus, for the construction of brick ovens, which have a lot of weight, you need a powerful foundation. The cost of a brick structure will be considerable. However, such furnaces are able to store heat for a long time, saving fuel. If you attach a horizontal chimney ("burs") made of metal to such a furnace, you can get an additional source of heating.

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metal oven if you have the simplest skills in working with metal, you can weld it yourself from scrap metal or even an old iron barrel. Therefore, the price of such structures is minimal.

However, if there is no radiator system in the greenhouse, the stove will warm up the air for the most part. Therefore, it is desirable to install it in the center of the room and slightly deepen into the ground. You can also raise the beds or place them on shelves where the air temperature is always higher.

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Convection and pyrolysis ovens have high efficiency. Such designs are quite complex in execution, so it is better to buy them ready-made. In convection boilers, air passes inside the casing. The principle of operation of pyrolysis structures is based on the complete combustion of gases that are formed during the combustion of fuel.

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Furnace "Buleryan", surrounded on the sides by open pipes, takes cold air from below with the help of them. The rapidly circulating air in the room warms up faster even after a single filling of fuel. If “sleeves” are put on the lower pipes, then it will be possible to distribute heat evenly throughout the greenhouse.

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A feature of the Butakov boiler is the increased heat transfer, which occurs due to the special design of convective pipes. However, it is quite difficult to clean it from combustion products. Plus, a single bookmark will not be enough to ensure a comfortable temperature. Yes, and it heats the air unevenly. The absence of a secondary afterburning chamber significantly reduces the efficiency of the design.

Read also:

Works only on used engine oil. In fact, this is a modified version of a potbelly stove with two chambers, a lowering and rising piston and a valve for adjusting the air supply. Such a unit is able to work without re-laying up to 61 hours! Therefore, if you have the opportunity to regularly fill it with spent fuel, this option is just for you.

To increase the efficiency of the furnace or boiler, install a fan next to the loading door. The efficiency of their work will increase significantly.

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Ceiling-mounted infrared heaters are among the latest developments in greenhouse heating. They consume a minimum amount of electricity, plus the effect of their action far exceeds any other types of heating devices, including water radiators and even underfloor heating.

The heat from them does not rise up, but spreads evenly throughout the room. Moreover, it is the soil that warms up most intensively, and not the air, which is very important for plants.

It should be noted that for heating greenhouses it is necessary to use only long-wave devices(preferably ceramic) with heating of the working fluid up to 270-300°C. Unlike medium-wave emitters, heated up to 1700-1900°C, they are not capable of burning plants.

Significant advantages of infrared heating include:

• environmental friendliness and harmlessness: such heaters do not emit carbon dioxide harmful to plant health and other combustion products into the air
• infrared devices do not dry the air at all, since they do not heat it, but any objects and surfaces; no humidification of the room during their installation is required
• no heat loss - the efficiency of such heaters is 95%
• efficiency: since they do not heat the air, but the ground, the required amount of thermal resources is reduced by 35%; Plus, such devices consume a minimum of electricity
• system installation is easy
• the risk of fire when using infrared devices is minimized

Underfloor heating system

An ideal option for heating the soil in a greenhouse is also a system of underfloor heating. Indeed, for the successful growth of plants, it is the roots that need to be warmed up.

Since heating a greenhouse with electric heating elements will cost a round sum, it is better to install a stove or boiler in it. The heating system can be combined by installing radiators around the perimeter.

1. For heating the greenhouse, it is better to use polyethylene pipes. They are buried to a depth of about 40-50 cm in the drainage - a layer of rubble and sand
2. It is undesirable to use metal-plastic for laying in the ground. After all, its fittings (connecting elements) require regular tightening. If you still decide to use such hard plastic, use compensation loops when laying the pipeline
3. Polyethylene film is laid first serving as waterproofing
4. Next, a layer of thermal insulation is laid foam or expanded polystyrene
5. It is also possible to reduce the thermal conductivity of the soil with the help of compacted sand., which is poured over the heat-insulating layer to a height of 10-15 cm
6. The distance between the pipelines should be 0.36 m. To ensure uniform heating, 2 collectors are placed along the edges of the greenhouse. Pipes are connected to them in alternation
7. To protect the pipeline from damage during digging of the soil with a shovel or fork, slate or a metal mesh is laid on top of it
8. Next 35-40 cm layer- fertile soil

Heating with gas

The disadvantages of such heating include the need for mandatory coordination with special services. Moreover, you will not be able to make gas heating of the greenhouse - the drafting and installation of such systems is carried out only by specialists. Due to the high risk of ignition during operation, the operation of gas boilers will need to be constantly monitored. Due to the excess of carbon monoxide formed during the combustion of fuel, in order to avoid poisoning and the threat of an explosion, it is imperative to install in a heated room ventilation.

But still, there are many more advantages to such devices. The cost of gas is not that high. You will have to spend money only on the purchase of a boiler and equipment for it. Such designs provide uniformity and fast heating rate of the greenhouse, plus they are as easy to maintain as possible. But in order for it to warm up evenly, it is better to install heaters or connect several burners at once.

We list the main types of gas equipment used to heat greenhouses:

• convectors: the industry produces special devices of this type specifically for heating greenhouses; built-in heat exchanger evenly distributes heat throughout the room; ventilation in it is provided with the help of a coaxial (pipe in pipe) chimney
• heater with two open burners(the second of them serves as a spare) and a vertical chimney; ventilation system installed separately
• infrared burners: they are located in separate zones for local heating of certain types of crops or accelerating seed germination; equipped with a smoke exhauster that throws combustion products into the chimney; during their operation, the arrangement of forced ventilation systems is not required - natural enough

In most cases, gas heating in greenhouses is combined with water heating.. The principle of its arrangement is similar to that described above.

Thermal gas guns, used for spot heating, can be easily connected to both the gas main and the cylinder. Such structures are lightweight and mobile enough, they can be easily moved to any other place. The fuel in them burns out completely, so the risk of carbon monoxide poisoning during their operation is minimal. Modern gas-fired heat guns are equipped with a temperature and even humidity control system.

Solar batteries

Collecting and accumulating the heat given off by the sun's rays will help to get an early harvest in the spring. Heating the greenhouse with solar batteries can also be used as an additional one. For the winter period, the heat received only from them will not be enough.

To accumulate solar energy, the greenhouse must be installed in the most open place and positioned from east to west. It has been proven that polycarbonate arched structures are able to "collect" the maximum number of rays. Plus, the air in the cells of this material will serve as a natural heat insulator.

Solar batteries are divided into:

• aquatic: heat storage in this case are water containers (barrels or pools); moreover, several small containers have an efficiency higher than one large one, because water always warms up better closer to the surface; they are distributed evenly throughout the room
• stone: this material is able to retain heat for a long time, so it makes sense to lay out the walls of the greenhouse with stone or fill it with a sufficiently large layer around the perimeter of the structure
• air: belong to the most efficient battery devices (see photo); for efficient heating, heat exchangers are placed perpendicular to the direction of sunlight; heated air through pipes enters the greenhouse; the intake of cold air is carried out through the second duct

When installing an air heating system in

The motivation for building a heated greenhouse is different. It is needed for year-round cultivation of vegetables. And also to extend the term of cuttings of garden plants and successful wintering of young seedlings. The purpose for which a winter greenhouse is built directly affects the way it is heated, the degree of illumination, and a number of other technical characteristics. In the article, we will consider how to build a winter greenhouse with our own hands using the example of a polycarbonate structure. And also consider in detail the methods of its heating.

Types of winter greenhouse heating

Before you build a winter greenhouse with heating, you need to calculate how long a certain temperature should be kept there. If the greenhouse is used for growing mother plants and their further cuttings in January-February, then it is enough to bring the temperature in the greenhouse to +10 ºС. For growing vegetables, you will need at least +20 ºС. Based on this, it is worth choosing the most cost-effective heating method. Let's look at a few basic options.

• Tip: if you need to increase the temperature only in early spring, when there are no severe frosts, then the "grandfather" method will do. Under a layer of earth of 20 cm, fresh manure is placed in its pure form or mixed with sawdust. From above, the soil is spilled with warm water and covered with a film. When rotting, the temperature of the manure rises to 60 ºС. This process takes 4-6 months. and warms the earth and the air above it quite well.

Electric way of heating a winter greenhouse

Since electricity is one of the most expensive heating methods, it is only suitable for small greenhouses that have high tightness and, preferably, thermal insulation of the foundation.

The most popular electric heating systems

• heat gun. It consists of a heating element and a fan. Efficiency depends on the power of the device. The heating of the greenhouse occurs very quickly, and thanks to the fan, warm air is distributed evenly. But it should be borne in mind that the air at the outlet is very hot and it must be placed at a distance from the plants.
• Electric convector. The air in the greenhouse will heat up more slowly, but oxygen will be conserved. It will be more comfortable to work in such a room. Air enters it from below and, heating up, leaves the upper section. Therefore, when growing plants, it is recommended to set it not very high. Among the shortcomings - high power consumption. Pays off only in commercial greenhouses.

• fan heater. These inexpensive household heaters are perfect for small greenhouses. It is enough, approximately, to heat one greenhouse measuring 3x6 m. The flow of warm air is more narrowly directed, in contrast to the convector. But thanks to mobility, it can be placed anywhere and rearranged if necessary.

Tip: when using these electrical appliances, it must be remembered that with insufficient power or a small amount of them, the heating of all the air in the greenhouse can be uneven, which will greatly affect plant growth. In addition, warming the air, they practically do not affect the temperature of the soil.

The "warm floor" system in the winter greenhouse

• Uniform heating from below is the best way to maintain an even soil and air temperature in the greenhouse. In addition, such a system can be equipped with an air temperature sensor. Which will help automatically maintain the set temperature. Organizing a warm floor in a greenhouse is easy.
• First, a layer of soil is removed to a depth of 30-40 cm. Non-woven geotextile material (lutrasil, spunbond, etc.) is laid on the bottom and a layer of sand 10 cm is poured. Level and compact.

Tip: if there is a risk that moles can damage the floor, then the first layer, even before the geotextile, is laid with a protective mesh.

• Then a heater is placed. It is best to use moisture resistant boards. For example, foam plastic (it is better not to use polystyrene, it is spoiled by mice).
• Next is a layer of waterproofing. The cheapest is plastic wrap. And a chain-link mesh on it.
• On top again a layer of sand of 5 cm. It must be carefully leveled and compacted. A waterproof cable is laid out on it. It is arranged serpentine with a distance of 15 cm.
• 5 cm sand is poured on top and a chain-link mesh is laid. It remains only to pour fertile soil.

Furnace method of heating a winter greenhouse

• Almost all summer residents have an incomparable stove "potbelly stove". This is an inexpensive way to heat a room, which is often used for greenhouses. With relatively inexpensive fuel, it warms up and keeps the temperature in the greenhouse for a long time, even in winter, up to 20 ° C.

Tip: old and modern potbelly stoves are heated with firewood, scrap wood from pallets, and even shavings. The last 2 types of fuel in excess are offered free of charge in any city. And in addition to heat, the output is wood ash - a storehouse of trace elements for plants.

Of the minuses, the following can be noted:

• heating will always be uneven. The oven will be much hotter. In this case, air exchange will not occur. Therefore, either it is placed at a distance from the plants, or a fan is installed next to it;
• open fire is used - and this is a fire hazard. It is required to observe safety precautions and not to place flammable objects nearby;
• you have to constantly throw up fuel, which means you have to constantly be near the greenhouse.

Tip: stove heating is also suitable for warming up the soil. For this, pipes from the stove are laid underground. Passing through them, warm air heats the soil and, rising up, heats the air.

Water heating for winter greenhouse

Water heating of the greenhouse can be made natural or forced:

• natural- when water is heated in the boiler, its volume expands. And it independently enters through pipes to radiators. Pipes are mounted in a slope;
• forced- there is a pump in the system that drives heated water cyclically;
• but the greatest effect when heating a greenhouse in winter can be achieved by setting double-circuit system. In this case, one circuit is the pipes of a warm water floor, which are placed under the soil, and the second circuit is radiators for heating the air. This significantly accelerates the growth of plants, creating a favorable microclimate for them, when it is warm both at the roots and under the roof of the greenhouse. In addition, by supplying the system with a thermostat, the temperature will be maintained automatically.

Infrared heating for winter greenhouse

This method of heating has several advantages:

• air heating starts very quickly, almost immediately, at the moment of switching on;
• you can purposefully warm up a certain area with plants;
• works silently;
• has a wide choice of methods of fastening;
• no oxygen is burned during operation. And the absence of a fan eliminates the formation of dust, which adversely affects the plant, when settling on the leaves;
• the air does not dry out and high humidity is maintained in the greenhouse. Which, in turn, creates a favorable microclimate for planting;
• the presence of thermostats will allow you to easily select the desired temperature;
• due to the fact that there are no mechanical moving elements in IR heaters, the service life without repair is very long, even with round-the-clock use;
• compactness makes them convenient for use even in small greenhouses or greenhouses;
• IR heaters belong to the fireproof class of equipment.

What difficulties will you encounter when choosing this method of heating a winter greenhouse:

• the initial installation of IR heaters will be quite expensive;
• a large number of fakes of well-known brands of equipment, so being tempted by a lower price, there is a risk of a quick breakdown of the device;
• it is important to accurately calculate the required number of heating elements, based on their power, room volume and possible heat loss.

Where is the best place to place an IR heater in a greenhouse? To a greater extent, it depends on individual conditions: the size of the greenhouse, the power of the equipment and the range of heating with IR rays. But there are a number of universal requirements:

• the most successful placement is above the landings;
• the minimum distance from the lamp to landings is 1m. In order to maintain this distance as it grows, it is recommended to mount it on suspensions;
• or use weaker heaters permanently fixed under the roof of the greenhouse. The temperature near the ground will be slightly lower, but, on the other hand, a large planting area will be heated;
• for a standard country greenhouse, these heaters are recommended to be mounted with a minimum step of 50 cm. 2-3 devices are enough for a 6x3 m greenhouse;
• if you need to heat a large area, then it is more rational to arrange them in a checkerboard pattern to exclude cold zones.

What to look for when choosing an IR heater for a winter greenhouse:

• in pursuit of large yields, summer residents sometimes use industrial IR heaters in their small greenhouses. They emit short wavelengths that guarantee accelerated plant growth. But you should know that they will negatively affect health. Therefore, before purchasing a heater, you need to pay attention to the scope of its use;
• even for commercial greenhouse heating, you should not choose electric IR emitters. Electricity consumption will be extremely costly and economically unprofitable;
• Ceiling IR heaters are generally designed for high production greenhouses. For domestic purposes, devices are sold on tripods or wall-mounted;
• on average, one industrial heater is able to heat a greenhouse with an area of ​​up to 80-100m², and a domestic one up to 15-20m².

Do-it-yourself winter greenhouse with heating

Consider how to build a winter greenhouse from modern material - polycarbonate

Do-it-yourself foundation for a winter greenhouse

• An important aspect of construction is the creation of an energy-efficient space, without gaps and cold bridges. Therefore, it is recommended to build a foundation. But before you fill it, you should lay all the necessary communications (electricity, water supply, etc.)
• It can be columnar or on piles. But in this case, you will need to sheathe it and additionally insulate it. It is better to make a strip foundation. A trench 15-20 cm wide and 50 cm deep is dripped for it. A sand cushion of 5 cm is poured onto the bottom and formwork is mounted.

• A waterproofing material is laid in the formwork, a reinforcing cage is placed. It remains to pour concrete.
• It is advisable to pour concrete only to ground level, and then lay it out with moisture-resistant red brick. If you pour the solution higher, then you must remember that the concrete will have to be waterproofed and closed from the outside and from the inside. If this is not done, the moisture that enters its pores freezes and expands in winter, which leads to microcracks and further destruction.
• If the plinth is laid out of brick, then to reduce the cost of construction, you can use a used brick, most importantly, choose red - it is more moisture resistant.

Do-it-yourself frame for a winter greenhouse

• The frame can be ordered ready-made from metal arcs. Or weld it yourself, then the greenhouse will be with a gable roof. If there are no welding skills, but you want to build the cheapest, then the frame is made of wood.
• Since the greenhouse will have high humidity all year round, the boards for the frame need to be prepared. They are cleaned with a grinder or sandpaper. After that, they are covered with special antiseptic impregnations. Additionally, it can be treated with liquid waterproofing, for example, with a primer.
• They begin to assemble the frame from the bottom strapping. To do this, a beam with a section of 10x10 cm is placed along the perimeter of the foundation.
• The step between the vertical beams depends on the snow cover in the region. If there is a lot of snow, then the step between the racks should not exceed 60 cm. Putting them more often is also not rational, the light transmission will decrease, and the price of the building will increase.
• On top of the wall racks, a strapping is also made from a bar with a section of 5x5 cm. They are attached to it with the help of metal corners of the rafters. Every 2 m, it is desirable to strengthen the roof with a horizontal beam, which is attached to the upper trim between the roof slopes.

Tip: to make the winter greenhouse as energy efficient as possible, a small vestibule with an additional polycarbonate door is placed at the entrance.

• Polycarbonate is attached from the outside, thickness is chosen 8 or 10 mm. Fix it on self-tapping screws with a rubber gasket.

How to build a winter greenhouse with heating video

Do-it-yourself installation of a greenhouse heating system

Consider the example of water heating.

Helpful Hints:

• the stove is placed in the greenhouse itself, as it will also radiate heat;
• for fire safety, the stove should be installed on a non-combustible base. If heating will be carried out by a portable potbelly stove, then a flat metal sheet is enough. If the stove will be laid out stationary from bricks, then a concrete base is poured under it;
• in the winter greenhouse, ventilation in the form of a window must be provided;
• all pipes that will lead directly from the furnace to the heating system must be made of metal. The use of PVC pipes is allowed only at a distance of 1 m from the heater;

• for water circulation, an expansion barrel is mounted as high as possible.

Stages of work

• For proper heating of the winter greenhouse, it is necessary to ensure the warming of the soil. For this, high-strength water heating pipes made of cross-linked polyethylene are used.

Tip: it is better to invest at the initial stage and supply the heating system with an automatic control unit. This will allow you to change the temperature depending on the degree of development of plants.

• For efficiency, heating pipes in the ground should be insulated from the bottom so that all the heat goes only up. In place of future beds, a layer of fertile soil is taken out. A protective mesh from the mole is placed at the bottom, a film is placed on top of it to hold the sand.
• A layer of sand 5-10 cm is poured onto the film and heating pipes are laid in a serpentine pattern with a step of at least 30 cm.
• In order for the soil to warm up evenly, the pipes are covered with a layer of sand 5-10 cm. A fertile layer of earth is poured on top.

Heating the winter greenhouse with warm smoke

• A standard potbelly stove is capable of heating a greenhouse area of ​​​​10-15 m2. It must be located away from the walls of the greenhouse. So, if they are made of metal and glass, then they recede 30 cm, if they are made of polycarbonate, then not less than 60-70 cm.
• What old models of furnaces, what modern ones, consist of the same structural elements: a firebox, a chimney and a pipe. Fuel is thrown into the furnace, where, when burned, it emits heat, or rather warm smoke. He, passing through the pipe inside the greenhouse, heats the room and goes out into the chimney.
• Start with the foundation for the stove. This will protect it from falling into the ground and a possible fall. A pit is dug under it with a depth of 40-50 cm. Its dimensions depend on the stove and on whether it will be lined with bricks in the future.

• Then a sand cushion and a drainage layer are poured at the same time. At the bottom, with a layer of 20 cm, put a mixture of crushed stone and sand. There you can add fragments of bricks.
• A blind area is built from wooden boards. So that when pouring it does not warp, the gap between the pit and the boards is filled with sand. Fiberglass reinforcement is placed inside and filled with concrete. A film or roofing material is placed on top and left to harden for 2-4 days.
• If it is required to raise the foundation, then brickwork is erected directly on top of the foundation on a clay-sand mortar (cement may crack). During operation, you must constantly use a plumb line and level so that the site is in an absolutely flat horizontal plane.
• If it is possible to make fire-resistant walls around the stove, then it is better to bring the furnace hole outside so that it can be heated from the street. This will reduce energy consumption (no need to constantly open and close the doors of the greenhouse) and avoid smoke inside the room.
• To reduce the cost of construction, you can make a simple potbelly stove with your own hands. To do this, choose the simplest shape - a rectangular one. To heat a winter greenhouse with a size of 15m2, it is enough to make a stove with a size of 50/30/40 cm (l/w/h).

• First, a drawing of the future stove is made and transferred to heat-resistant sheet metal. Elements are cut out by a grinder. First of all, the bottom of the furnace and 3 walls are welded. Stepping back 10 cm from the bottom, metal corners are welded, a grate will be laid on them (you need to buy it in advance in a store or make it yourself). The cell size is 2-3 cm2. In the future, the fuel will be placed on the grate and during combustion, the ash will fall down, where it is convenient to clean it.
• Traditionally, the chimney is made from above, therefore, before the cover is welded, a hole of 12-15 cm is made in it. But if the soil is supposed to be heated, then the chimney is placed on the side or below.
• On the front wall of the future stove, 2 holes are made with doors (the doors can be bought ready-made or made from a sheet of metal and attached to heat-resistant hinges). Fuel is loaded through one, and ash is cleaned through the second.
• A small piece of pipe is welded to the hole from above. In the future, a chimney will be attached to it.
• The stove for heating the winter greenhouse can be overlaid with bricks, which will reduce the risk of a fire, and also increase the heat transfer time. Which is especially true for winter nights. If this is not done, supports are welded to the structure.
• If the greenhouse is small, then, as a rule, they make one chimney pipe that runs through the entire greenhouse and exits under the ridge. If you want to heat a large room and warm up from below, then the chimney is assembled from pipes of equal diameter by welding or special coupling adapters. Welding allows milking absolute tightness. And when using couplings, clay is applied to all joints under them. A chimney is attached to the stove by any of these two methods.

Tip: when using the stove in a winter greenhouse, you need to correctly lay the chimney pipe system. For them, trenches of 30-40 cm are dripped on the beds, in increments of 50-100 cm. Non-woven material is laid down, then pipes are placed and covered with expanded clay. A fertile layer is poured on top.

• When heating the air, supports are made for the chimney so that it rises smoothly and at the outlet is above the level of the stove. This will ensure uniform heating and traction at the same time.

• At the end of the chimney, a chimney is welded through which the smoke will exit the greenhouse to the street. The pipe is wrapped with foil heat-insulating material so that it does not heat the roof elements. The end of the pipe is protected with a spark arrestor.
• Furnace heating strongly dries the air. For plants in a greenhouse, this is bad. Therefore, often a metal container for water is placed next to the stove. It will provide watering with warm water and evaporating, increase the humidity of the air.

If the question arose of how to build a greenhouse for winter cultivation, then it is necessary to proceed from the average temperature. If any of the above methods is suitable for the southern regions, then for the middle lane and the northern regions it will be necessary to install a gas or electric system.

A greenhouse with high-quality heating allows you to grow various plants at any time of the year. Greenhouse heating can be implemented by several methods using various heat carriers. When choosing an option, it is necessary to take into account the purpose of the greenhouse, dimensions and available energy resources.

One of the best options to warm up a greenhouse is to lay a heating line under a layer of soil. Source zaggo.ru

It is imperative to calculate which particular coolant will be economically beneficial for the installed greenhouse or structure to be erected. Consider the availability of energy resources and their cost, in what periods the greenhouse will be operated - only in spring and summer or all year round. When choosing a furnace, one must remember about the functionality of the design and thermal power. By making the right calculations and using high-quality materials, you can get an excellent and durable result. Thanks to even a small greenhouse, you can provide yourself with fresh herbs and vegetables all year round. When installing large greenhouses, it becomes possible to start your own business.

Heating options

Most heating systems are powerful enough and it is advisable to use them only in those structures that are used not only in early spring, but throughout the year.

Common Heating Methods:

• heating cable;

  gas gun;

• electric heaters.

The water heating system is more often used for large greenhouses Source stroyfora.ru

Gas guns are considered a good way of heating, which are small in size, quickly warm up the room with minimal fuel consumption, are safe to use and very efficient. Using electricity, the main heating element is recommended to use infrared heaters that do not dry the air. For year-round and large greenhouses, it is preferable to use brick ovens, as they heat up longer, but hold heat well and then cool down for a long time, maintaining a stable temperature. The air will not dry out, the humidity remains at the required level. The metal heats up quickly, but as long as there is a fire, and such a furnace has a small heat capacity, it dries the air, it is additionally recommended to use a water circuit.

Metal ovens

mobility and the possibility of using for several months, and then it can be removed;

no foundation required, occupy a minimum of space;

favorable cost material;

connectivity water circuit;

simple and fast installation.

Mobile metal furnace for air heating Source th.decorexpro.com

However, it is impossible to automate the processes and it is necessary to heat manually, it is required to install a container with water. Installation of the furnace is carried out inside the structure or in a separate room with the output of the circuit. The chimney can be located in the greenhouse, the slope is at least 15 degrees. For this, an uninsulated metal pipe is used; heat-insulated boxes are installed in the roof for the exit.

The furnace is installed in several stages:

ground preparation;

installation of the furnace on the base;

connection of the chimney using a heat-resistant sealant, the narrowing of the chimney must not be allowed;

loop connection, if required.

Furnaces that are equipped with a water heat exchanger must not be operated without a filled system.

brick ovens

Heating for a greenhouse using a brick stove is mainly used for year-round use. This heating model is effective even in very cold weather due to its high heat capacity. Any stove can be used, but its thermal power is fully consistent with the heated area.

A brick oven is a capital structure designed for many years of operation. Source teplicno.ru

Brick laying occurs according to the following scheme:

creation of high-strength foundation with reinforcement, for this part of the soil is removed, the bottom is covered with sand, formwork is made, it takes at least three weeks to dry, the surface must be constantly moistened;

masonry furnace, ashpit, smoke channels.

The masonry stage has its own difficulties and peculiarities, therefore, it is necessary to entrust the work to a qualified specialist who has the appropriate experience. In the process of work, it is necessary to install doors, dampers.

On our website you can find contacts of construction companies that offer the service of installing stoves and fireplaces.

Water heating

This option can be implemented in several ways - installing a separate boiler or connecting to a house system. In the second case, a separate circuit is made to turn it off and drain the water. If a separate system is installed, then it will be necessary to install the boiler taking into account the available and profitable fuel.

Gas models are the most convenient and economical, they can maintain the set temperature. Combustion products are removed by a coaxial chimney. Solid fuel models may have different modifications. Also an economical option, but there is practically no possibility of automation and constant monitoring is required. Electric models that maintain the temperature around the clock have high automation indicators. They are small, safe and completely silent. However, there is a downside - the cost of electricity.

Whatever furnace is used, the principle of operation of water heating remains unchanged. Source fermer.ru

Such heating in the greenhouse occurs according to one scheme, regardless of the boiler. Availability required the following items:

filters, safety group, pump;

radiators, pipes, expansion tank;

balancing valve;

heat accumulator.

Connection is carried out according to the following scheme:

Chimney. For gas and solid fuel models only.

Radiators. Heating elements.

Tank. Used for forced system, installed in front of the pump or boiler outlet.

Security group. Includes air vents, valves, gauges, manifolds and couplings. It is installed behind the boiler, where the highest pressure and temperature values ​​\u200b\u200bare noted.

Pump. Maintains pressure in the entire system, mounted in front of the boiler on the return line.

Crimping air.

If the system has passed the test, then the coolant is poured into it and the boiler and a test run is carried out, air is bled, and balancing is carried out.

Video description

About the water heated floor in the winter greenhouse, see the video:

Choosing the optimal boiler

It is necessary to choose a boiler model taking into account the size of the installed greenhouse, as well as the crops grown. If there is gas, then it is better to use gas models. For year-round models, solid fuel boilers are a good option. For small greenhouses with periodic use, the installation of a solid fuel boiler is not suitable. It is much more profitable to put an electric low-power one. It does not require space and the construction of a chimney, the cost of electricity is minimal.

When using radiators, a number of calculations are required. To achieve a good result and maintain a constant microclimate, you should contact a specialist. In this case are taken into account:

dimensions buildings;

thermal power;

amount radiators.

Sections must be distributed throughout the greenhouse in several rows. It is better to opt for low radiators for good soil heating.

Source th.decorexpro.com

Electric heating

Basically, special infrared-type heaters are used, they warm up the soil, maintain the temperature and are distinguished by minimal costs. Sometimes other options may be used. The calculation should be carried out by a specialist, taking into account all the features of the greenhouse and plant varieties. Elements are evenly distributed throughout the room. Selected models are suspended from the ceiling and connected to the network. When using temperature sensors, you can fully automate the heating process and save additional money.

Source m.yukle.mobi

Solar batteries and biological heating

If you are interested in the simplest heating of a greenhouse, then you should choose solar batteries. This is the cheapest option, which uses only solar energy. The greenhouse is located in an open area where there is no shade from other buildings or trees. The greenhouse itself is built from polycarbonate with a cellular structure, creating a greenhouse effect. All cells are insulated and contain air. Glass can also be used. The greenhouse must be erected in an arched type, and it must be placed on the east-west line.

When used correctly, greenhouse bioheating shows excellent results. Source plantu.ru

The following works are carried out around the greenhouse:

digging a pit WxD 30x40 cm;

insulation is laid, for example, polystyrene foam;

sand is poured, film and earth are on top.

The design accumulates heat, but this method can only be used on sunny days.

The second option is biological materials and the principle of their decomposition. Horse manure is often used, it is heated to 70 ° C and maintains this temperature for at least 4 months. Straw is added to lower the temperature.

Source vse42.ru

Cable heating

It does not take up space inside the structure, the cable is laid as for a warm floor, warms up the soil well, allows you to maintain different temperature conditions, which increases productivity. It features easy installation and ease of temperature control with minimal power consumption. Mainly used in industrial greenhouses.

Electric underfloor heating - fully automated heating system Source istroyka.com

Heat guns

It is considered a simple option without the need to develop and implement complex structures. Suspended from the ceiling and connected to the network, after which it can be used immediately. The air does not harm plants, it is distributed by a fan. There are various types of guns that run on gas, diesel or electricity.

Most often, heat guns are still used as a temporary solution, because the earth warms up weakly with such heating. Source klimasklep.pl

air heating

A primitive version with the installation of a pipe that leads to greenhouses, and on the other hand a fire is made. The length of the pipe must be at least 3 m, and the diameter must be 30 cm. The pipe can be made longer and additionally perforated, carried further inward for greater effect. The big disadvantage is the need to constantly maintain the fire, so the option is mainly used as an emergency. Such a heating system does not warm the soil, since pipes are mounted under the ceiling to protect plants from hot air.

This method of heating differs from heat guns only in a more uniform distribution of heat. Source prostanki.com

Thermal fans

A fan can be installed to distribute the air, eliminating the need for a piping system. The air warms up quickly enough, the fan can be moved throughout the greenhouse or several pieces can be installed. However, currents of very hot air can burn plants, and the fan itself is able to heat small areas, so it is necessary to install several fans that consume a lot of electricity.

Another “emergency” heating method to be used with caution Source tarlasera.com

A good greenhouse with the right calculations will allow anyone to not only grow herbs and vegetables for their table, but also run their own business. Materials and technologies will make it possible to operate the greenhouse all year round even in severe frosts. But the main requirements remain a good heating system and lighting, the only way to get a good result.

Modern advances and industry offer a wide range of ways to heat greenhouses. Some options are only suitable for warm regions, others can be used all year round. They differ in installation features, costs, fuel used. When choosing a heating option, it is required to carry out certain calculations, take into account the area of ​​\u200b\u200bthe greenhouse and the crops grown. The greenhouse can be used not only for seedlings or early harvest, but also for the cultivation of flowers and seedlings.

Additionally, the greenhouse can be equipped with automatic irrigation and a temperature control system.

Video description

The option of combining stove heating and fans in the following video:

Even on our website you can find contacts of construction companies that offer the service of arranging winter gardens. You can directly communicate with representatives by visiting the exhibition of houses "Low-Rise Country".

Conclusion

It is very important when building a greenhouse, choosing a heating system, plants and heating elements, be sure to consult with experts on all issues. Remember that the slightest mistake can lead to negative results - a poor harvest and slow development of plants. It is also important to choose the right materials from which the structure will be built. Consider absolutely all the factors that can affect the operation of the greenhouse. Consider which heating option is best for you, available resources and fuels.

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Heated greenhouses make it possible to eat vegetables, herbs and fruits all year round. The minimum temperature that must be provided in a greenhouse in order to grow crops is 18 degrees. To maintain such a temperature regime in it, walls alone are not enough, no matter what material they are made of. You can see what heating devices suitable for a greenhouse look like in the photo.

The most economical way would be to build a greenhouse in the place where the heating main passes. In this case, you will only need to find the most suitable place for construction. Otherwise, the construction of the building will have to pay more attention. But in both options, a greenhouse heating system is simply necessary.

Heating a greenhouse with gas

The gas heating system for greenhouses is quite popular. It is not recommended to supply gas from the house to the greenhouse - it will be too expensive. It is better to buy several gas cylinders - they should be enough for the winter (read: ""). This option will be much more economical. When using such equipment, it should be borne in mind that the combustion products of natural gas do not have the best effect on plants. For this reason, it is imperative to make ventilation and an exhaust hood in the greenhouse to bring them out.

When buying a heater, you should pay attention to the fact that it has a special sensor. It is needed so that in the event of a cessation of combustion, the gas supply to the burner is immediately blocked.

Heating with a solid fuel boiler

It is better to install such heating equipment not in the greenhouse itself, but in the vestibule. This option is more preferable for the reason that you do not have to open the door to the room several times a day, letting cold air into it to add another portion of fuel. But at the same time, in this case it will be less effective, since heat also comes from the walls of the boiler itself. It is necessary to correctly calculate the heating of the greenhouse so that the device is powerful enough (read also: "").

The main disadvantage of solid fuel boilers is the need to regularly add fuel. But this problem can also be solved - long-burning devices have recently appeared that can operate on one fuel tab for up to 36 hours. Such boilers are economical and safe to operate.

Stove heating

If you do the heating of the greenhouse with your own hands, then you can significantly reduce your costs. One of the economical ways to heat a greenhouse is to install a stove. A simple design can be done independently, the cash costs in this case will be minimal.

To make heated greenhouses with your own hands, you need to follow the instructions given:

Then an expansion tank with a volume of 20 liters is attached to the barrel - it is welded from sheet metal. A heating system is welded from a profile pipe measuring 40x20x1.5 centimeters. Pipes are laid on the ground in such a way that there is a distance of 120 centimeters between them. This arrangement of pipes will warm the soil. To ensure the circulation of water in such a heating system, a special pump is required.

Water heating

Heating a greenhouse with a water system is more efficient than other methods (see also: ""). Do-it-yourself heated greenhouses are easy to make if you follow the instructions given. The main structural element is a water electric heater (read also: "").

The device can be made from a conventional fire extinguisher. Its top is cut off, and a heating element with a power of 1 kW is installed on the bottom. The heating element can be taken from a samovar or an old household appliance of the required power. At the top of the device, a removable cover is made to pour water into the heater (read also: ""). Two tubes are connected to its body, which are connected to the radiator. The tubes are attached with gaskets and nuts. For the operation of such a heater to be automatic, the greenhouse heating circuit must include an alternating current and 220 V voltage relay.

Heating a greenhouse with solar panels

You can also heat the greenhouse with devices that absorb the sun's rays.

To create such a heating system:

• first dig a hole about 15 centimeters deep;
• then a layer of polystyrene or any other heat-insulating material is laid on the ground;
• a plastic film is placed on top to provide waterproofing;
• wet sand and soil are poured on top of the film.

Such a system is very simple and does not require financial costs, but it is quite suitable for maintaining the temperature in the greenhouse that is optimal for plant growth. At the same time, there should be special devices on the roof that will absorb solar energy and thereby contribute to the heating of the greenhouse. It should be borne in mind that in winter such a system will be ineffective - on cloudy days the greenhouse will not be able to warm up (read also: "").

You also need to make a heating calculation for the greenhouse so that it is effective.

Do-it-yourself greenhouse heating, in detail on the video:

air heating

This method is also quite simple, moreover, it does not require financial costs. First, they take a piece of iron pipe 2-2.5 meters long and 50-60 centimeters in diameter. Then one end of the pipe is introduced into the greenhouse, and a fire is kindled under the second. The air in the pipe will warm up pretty quickly. This method is quite suitable for maintaining a comfortable temperature in the greenhouse.

The main disadvantage of this method of heating is that the fire must be constantly maintained. If the fire goes out, the temperature in the greenhouse will drop very quickly. Therefore, such heating of a greenhouse is not common. See also: "How to make greenhouse heating - possible options".

It is difficult to say which heating is best for a greenhouse. Currently, there are many ways to heat greenhouses, each of which has its own advantages and disadvantages. So, for example, heating with the help of electrical equipment is highly efficient, its operation does not need to be constantly monitored. But at the same time, such a heating system will require significant financial investments, and operation will be expensive. Inexpensive systems require constant monitoring. Therefore, the choice of a greenhouse heating option depends on many factors, among which financial possibilities are of considerable importance.