Gas boilers for a house of 300 m2. gas boilers

gas boilers - This The best decision for gasified premises. The main advantages of using gas boilers: they are easy to operate and maintain, compact, suitable for heating a private house and non-residential premises.

Technical characteristics and types of gas boilers

When choosing a gas heating boiler, its main characteristics should be taken into account: the type of combustion chamber, the number of circuits, the type of installation.

According to the installation method, gas heating boilers there are:

• floor-standing: such boilers are characterized by high power, long-term operation, but for them it is recommended to allocate a separate room;
• wall-mounted (hinged): they have a small mass, are compact, their cost is much lower than the price of floor-mounted ones.

Today, both single-circuit gas boilers, which provide only heating, and double-circuit ones are equally popular. The functions of the latter include both heating and water heating. It is boilers with two circuits that are most often purchased for home and summer cottages.

According to the type of combustion chamber following models boilers.

1. With open cam combustion - oxygen in this case is consumed from the room in which the equipment is installed.
2. With a closed combustion chamber (or a turbocharged gas boiler) - receives oxygen from the street. Such models have a number of advantages:

• simple installation and operation;
• high efficiency;
• security;
• the need to use a simple coaxial chimney small diameter.

Where to buy a gas boiler?

In the company "Teplomatika" you can buy gas boilers online wholesale and retail. Our qualified employees will install and connect heating gas systems. We are in the business of selling our products High Quality, at affordable prices.

You can order a gas boiler in several ways - by sending the goods to the basket or by making a purchase in one click. All information about the terms of delivery is contained in a separate.

What gas boiler?

If in your house the thermal energy produced by the gas boiler will be spent only on heating and water heating, you can safely take the boiler power equal to the heat loss of the house (for preliminary simplified calculations, use this dependence - for every 10 m2 of heated area you need 1 kW of boiler power ).

All about installing a gas boiler

The purpose of our work is A complex approach to ensure reliable system heating. We can offer you professional selection equipment and components that meet your operating conditions of the boiler house, prompt installation of boilers and commissioning of the turnkey heating system.

Repair of boiler equipment

We provide warranty and service maintenance heating equipment, repair and replacement of boiler components. Own service department, accurate diagnostics and quick troubleshooting. You can conclude an agreement for annual, seasonal or one-time maintenance of heating equipment.

Have questions about choosing a gas boiler?

Our experienced consultants will help right choice boiler, taking into account all your wishes and features of a residential or industrial building. We will answer all questions related to the selection and installation of boiler heating equipment. In our catalog big choice floor and wall-mounted gas boilers from leading manufacturers of different price categories.

You can also leave your contact details through and our manager will call you back.

In the message, it is desirable to indicate your preferences: floor or wall type gas boiler placement, number of circuits, for domestic or industrial use, and other preferences.

A heating gas boiler is a device that, by means of the combustion of fuel (natural or liquefied gas), heats the coolant.

The device (design) of a gas boiler: burner, heat exchanger, thermally insulated housing, hydraulic unit, as well as safety and control devices. Such gas-fired boilers require a chimney to be connected to remove combustion products. The chimney can be either a conventional vertical or coaxial (“pipe in pipe”) for boilers with a closed combustion chamber. Many modern boilers equipped with built-in pumps for forced circulation of water.

The principle of operation of a gas boiler- the coolant, passing through the heat exchanger, heats up and then circulates through the heating system, giving the received thermal energy through radiators, underfloor heating, heated towel rails, as well as providing water heating in the boiler indirect heating(if it is connected to a gas boiler).

Heat exchanger - a metal container in which the coolant (water or antifreeze) is heated - can be made of steel, cast iron, copper, etc. The reliability and durability of a gas boiler depends on the quality of the heat exchanger in the first place. Cast iron heat exchangers corrosion resistant and have long term services, but are sensitive to sudden temperature changes and are distinguished by significant weight. Steel containers can suffer from rust, so they internal surfaces protect with various anti-corrosion coatings, providing an extension of the "life" of the device. Steel heat exchangers are the most common in the manufacture of boilers. Corrosion is not terrible for copper heat exchangers, and due to the high heat transfer coefficient, low weight and dimensions, such heat exchangers are often used in wall boilers, but of the minuses, it should be noted that they are more expensive than steel ones.
In addition to the heat exchanger, an important part of gas boilers is a burner, which can be various kinds: atmospheric or fan, single-stage or two-stage, with smooth modulation, double.

To control the gas boiler, automation is used with various settings and functions (for example, a weather-compensated control system), as well as devices for programming operation and remote control of the boiler.

The main technical characteristics of gas heating boilers are: power, number of heating circuits, type of fuel, type of combustion chamber, burner type, installation method, pump and expansion tank, boiler control automation.

To determine required power gas heating boiler for private country house or an apartment, a simple formula is used - 1 kW of boiler power for heating 10 m 2 of a well-insulated room with a ceiling height of up to 3 m. If heating of a glazed basement is required winter garden, rooms with non-standard ceilings etc. the gas boiler output must be increased. It is also necessary to increase the power (about 20-50%) when providing a gas boiler and hot water supply (especially if water heating in the pool is necessary).

The peculiarity of calculating the power of gas boilers: the nominal gas pressure at which the boiler operates at 100% of the power declared by the manufacturer, for most boilers is from 13 to 20 mbar, and the actual pressure in gas networks in Russia can be 10 mbar, and sometimes even lower . Accordingly, a gas boiler often works only at 2/3 of its capacity, and this must be taken into account when calculating. In more detail with a table for calculating the power of a heating boiler, you can

Most gas boilers can transfer from work natural gas on the liquefied gas (ballooned propane). Many models switch to liquefied gas at the factory (check these model specifications when buying), or to gas boiler injectors (jets) are additionally supplied for switching to bottled gas.

Pros and cons of gas boilers:

Boiler piping- These are devices for the full operation of the heating and water supply system. Includes: pumps expansion tanks, filters (if necessary), manifolds, return and safety valves, air valves, valves, etc. You will also need to purchase radiators, connecting pipes and valves, thermostats, a boiler, etc. The issue of choosing a boiler is quite serious, so it is better to entrust the selection of equipment and its complete set to professionals.

What is the best boiler? On the Russian market gas boiler equipment has its own leaders in quality and reliability. The best manufacturers and brands of gas boilers are presented in the assortment:

"Premium" or "Lux"- the most reliable and durable, easy to manage, the kit is assembled as a "constructor", more expensive than the others. These manufacturers include German companies

The creation of a heating system for a private house goes through a number of stages:

• technical task,
• design with selection of equipment,
• equipment,
• installation of a boiler room and home heating.

And at each stage, the wishes of the Customer are clarified and adjusted. This mainly concerns the parameters of housing, the number of residents, consumer properties and the cost of the system. Insofar as boiler equipment constitutes a significant part of the cost and determines the most important properties of the future heating system (and hence the parameters of the comfort of life in the house), it can be useful for the Customer to navigate the proposed models of boilers. At least in in general terms understand what he will pay his money for.

This review is intended to make it easier for the Customer to understand the features of the proposed boilers. various manufacturers based on their basic consumer properties. Rest specifications let's leave it to the specialists (although they are also important).

To conduct a correct comparison of the properties of boilers from different manufacturers, the same type of equipment was selected with the following parameters:

• power 40-50 kW;
• fuel - gas;
• atmospheric single-stage burner.

Reduced power boilers can be used for the design and installation of heating systems for houses with an area of ​​300 - 350 square meters, taking into account hot water supply (average figure). Since the required volume of prepared hot water for houses of such an area, it usually goes beyond the scope of models with a built-in boiler, the review draws attention to the configuration of boiler models with external boilers from the same manufacturer.

The main consumer characteristics are:

• durability, is determined by a number of indicators that are not given by manufacturers. Operation statistics are also not published in the open press. Although there are separate opinions of suppliers and consumers, the review adopted a simplified objective parameter (which can be verified) - this is the grade of cast iron from which the heat exchanger is made. Ductile iron heat exchangers have more high rate durability;
• gas consumption;
• the minimum gas pressure that determines the burner operation threshold under conditions reduced pressure in the supply gas line;
• availability of automation own production, which allows you to control additional circuits of the heating system (hot water supply, underfloor heating, heated towel rails, swimming pool, etc.) in automatic mode;
• price.

It should be noted that some indicators are almost identical for the models of most manufacturers.

The efficiency of most is at the level of 89-91%, however, some manufacturers offer models with higher efficiency, so this figure is given for all models.

The nominal gas consumption for models of all manufacturers is 5.2-5.8 cubic meters. per hour, so this indicator in the review is not considered for each model separately.

The working gas pressure for all models is 20mbar, but manufacturers offer a kit for working at reduced pressure, which is different for different manufacturers.

The review was carried out on the basis technical documentation manufacturers and prices of the main suppliers (representative offices and dealers) of boiler equipment. The absolute values ​​of prices in rubles are given as of May 2009. Despite the fact that they are constantly changing, it is quite possible to present a relative picture of the costs.

Producer: Viessmann (Germany)
Model: Vitogas GS1D375
Power: 48 kW

Efficiency: 83-92%

Automation: included, possible various options. Allows integration with the smart home control system. The given price includes a control kit for one heating circuit without a boiler.
Cost: about 117,304 rubles. (according to the catalog of the representative office - 2666 EURO).
General characteristics: increased service life due to the material of the heat exchanger, connection to " smart home". If there is no need for automation, you still have to pay for it.

Manufacturer: Buderus (Germany)
Model: Logano G234WS
Power: 50 kW
Heat exchanger material: high quality ductile iron
Efficiency: 89-91
Minimum gas pressure, mbar: 10
Automation: own production, various options are possible. Allows integration with the smart home control system.
Cost: about 110,714 rubles. without automation, 131,206 rubles. with automation similar to the previous model.
General characteristics: increased service life of the boiler due to high-quality cast iron of our own production, connection to a “smart home” is possible. When buying, you should pay attention to the following nuance - although automation is not included in the kit, you still have to purchase it (in the minimum version), since the boiler does not work without it. Similar design boilers are available ( color scheme), but cylindrical in shape (boilers are cubic in shape).

Producer: Wolf (Germany)
Model: ComfortLine CNG-48
Power: 48 kW
Heat exchanger material: ductile iron
Efficiency: up to 95%
Minimum gas pressure, mbar: not specified
Automation: own production R11 (plug connection system).
Cost: about 133,320 rubles. (according to the catalog of the representative office - 3030 EURO).
General characteristics: extended boiler life, low noise level, high efficiency. Boilers are offered that differ in design from the boiler (cylindrical boiler, cubic boiler).

Manufacturer: Vaillant (Germany)
Model: atmoVIT VK INT 484/15
Power: 49 kW
Heat exchanger material: ductile iron
Efficiency: 92%
Minimum gas pressure, mbar: not specified
Automation: own production VRC.
Cost: about 99,704 rubles. (according to the catalog of the representative office - 2266 EURO).
General characteristics: increased service life, Pro-E plug-in connection system (for connecting external automation and sensors), connection to a "smart home" is possible. Boilers of the same design as the boiler are offered.

Producer: Lamborghini (Italy)
Model: Gaster 51
Power: 51 kW
Heat exchanger material: ductile iron
Efficiency: 92%
Minimum gas pressure, mbar: not specified
Automation: no additional installation is provided (for this model).
Cost: about 105,000 - 107,000 rubles.
General characteristics: increased service life, for a boiler without automation - overpriced.

Model DTG EcoNOx 230-6
Power: 45 kW
Heat exchanger material: ductile iron
Efficiency: 95-96%

Automation: own production, RX77 S module, not included.
Cost: about 106,539 rubles.
General characteristics: increased service life, high efficiency, the possibility of completing with an inflatable burner and additional automation. Boiler of one design is offered. The boiler can be installed under the boiler, which saves space in the boiler room.

Manufacturer: De Dietrich (France)
Model: DTG 48N
Power: 48 kW

Efficiency: 90%

Automatics: additional is not completed (this model).
Cost: about 70,160 - 73,000 rubles.
General characteristics: a cheaper (and less attractive design) model of the boiler from this manufacturer. Boiler design - for the previous model.
Additional automation is not installed.

Model: Edena 2 Progress 50 SE
Power: 50 kW
Heat exchanger material: ductile iron
Efficiency: 91.9%
Minimum gas pressure, mbar: 5
Automation: own production SP4, not included.
Cost: about 103,776 rubles. (Group of companies "Maestro").
General characteristics: increased service life, the possibility of completing a conventional or environmentally friendly (with a reduced content of harmful substances) burner. Boiler design boiler, allows you to install additional automation.

Manufacturer: Chappee (France)
Model: EDENA Classic E 44
Power: 44 kW
Heat exchanger material: ductile iron
Efficiency: 91%
Minimum gas pressure, mbar: 5
Automation: additional installation is not provided (for this model).
Cost: about 79212 rubles. (Group of companies "Maestro").
General characteristics: cheaper model with a ductile iron heat exchanger. Made in a simplified design, boilers of a similar design are not produced (only for the previous model).

Producer: Baxi (Italy)
Model: CREATIS 1/2 Xenium SE 50
Power: 50 kW
Heat exchanger material: ductile iron
Efficiency: 90%
Minimum gas pressure, mbar: 5
Automation: own production - Ecocontrol, not included.
Cost: about 92,000 rubles.
General characteristics: boiler with medium ductile iron heat exchanger price category, two types of equipment are possible - with a conventional burner and environmentally friendly (low content of harmful substances). External boilers of similar design.

Producer: Baxi (Italy)
Model: Slim 1.490iN
Power: 48 kW
Heat exchanger material: ordinary cast iron
Efficiency: 90%
Minimum gas pressure, mbar: 5
Automation: weather-dependent - included (without outside temperature sensor).
Cost: about 65,925 rubles. (according to the catalog of the representative office - 1 465 EURO).
General characteristics: a boiler with a "narrow" design, weather-compensated automation is included, additional circuit control is not provided. It is possible to switch to the "warm floor" mode - it is convenient when heating a private house with the "warm floor" system. It is possible to connect a boiler of similar design. Connection of additional automatic circuit control is not provided.

Producer: Roca (Spain)
Model: G 200/50 GT
Power: 44 kW
Heat exchanger material: ductile iron
Efficiency: 94%
Minimum gas pressure, mbar: not specified
Automation: own production - Confort SE, not included.
Cost: about 83,996 rubles. (representative office - Maestro Group of Companies).
General characteristics: increased service life, high efficiency, installation of additional automation is possible.

Manufacturer: Rapido (Germany)
Model: GA110/46E
Power: 47 kW
Heat exchanger material: ductile cast iron GG 20
Efficiency: 94%
Minimum gas pressure, mbar: not specified
Automation: own production Rapidomatic, not included.
Cost: about 96,107 rubles. (according to the catalog of the representative office - 2149 EURO).
General characteristics: increased service life, high efficiency, the possibility of installing additional automation (plug-in connection system) and a boiler of a similar design. The boiler can be installed under the boiler, which saves space in the boiler room.

Producer: Biassi (Italy)
Model: Kappa 44 R
Power: 44 kW
Heat exchanger material: ductile cast iron of own production EN GJL200
Efficiency: 91.2%
Minimum gas pressure, mbar: 4
Automation: own production, not included
Cost: about 69,960 rubles. (according to the catalog of the representative office - 1 590 EURO).
General characteristics: increased service life, one of the inexpensive boilers with a ductile iron heat exchanger (own production). The burner operation is adjusted to low gas pressure. It is possible to connect additional automation and an external boiler (cylindrical design, in color scheme boiler).

Manufacturer: Ferroli (Italy)
Model: Pegasus D 45
Power: 45 kW

Efficiency: 91%
Minimum gas pressure, mbar: 5
Automation: no own.
Cost: about 77,968 rubles. (according to the catalog of the representative office - 1 772 EURO).
General characteristics: a boiler with average performance, can be equipped with Siemens automation, operates at a minimum gas pressure of 5 mbar. Relevant for the implementation of the boiler on the "manual" control.

Manufacturer: Junkers (Germany)
Model: SUPRALINE K45-8 E
Power: 45 kW
Heat exchanger material: ductile cast iron (made in France)
Efficiency: 91.8%
Minimum gas pressure, mbar: 13
Automation: own - Supraline, not included.
Cost: about 55,000 - 62,000 rubles.
General characteristics: an inexpensive boiler with a ductile iron heat exchanger. Insufficient information support of the representative office.

Producer: Protherm (Slovakia)
Model: Bear 60KLO
Power: 49 kW
Heat exchanger material: cast iron
Efficiency: 92%
Minimum gas pressure, mbar: not specified
Automation: no own.
Cost: about 52,948 rubles.
General characteristics: a budget option boiler without automation.

Manufacturer: Dakon (Czech Republic)
Model: GL 50 EKO
Power: 46 kW
Heat exchanger material: cast iron
Efficiency: 89-92%
Minimum gas pressure, mbar: not specified
Automation: supplied separately, by Komextherm.
Cost: about 66,600 rubles.
General characteristics: a budget boiler, automatic equipment is theoretically supplied, almost not all sellers have it in stock.

Manufacturer: Viadrus (Czech Republic)
Model: GARDE G 42
Power: 42-49kw
Heat exchanger material: cast iron
Efficiency: 90%
Minimum gas pressure, mbar: not specified
Automation: none.
Cost: about 55,692 rubles.
General characteristics: budget boiler without automation. The basic model is equipped with a two-stage burner. Gas Models of this manufacturer are characterized in different ways, well-established solid fuel model with automatic fuel supply.

Manufacturer: Nova Florida (Italy)
Model: RTN E 48
Power: 48 kW
Heat exchanger material: cast iron
Efficiency: 90%
Minimum gas pressure, mbar: not specified
Automation: none.
Cost: about 61,424 rubles.
General characteristics: a budget boiler of sufficient quality for systems without automation.

In conclusion - what do we pay for when choosing a boiler:

• behind quality material heat exchanger - ductile cast iron determines the service life of the most expensive and massive part of the boiler. Of course, you can change the heat exchanger, but in practice this means replacing the entire boiler. Some manufacturers allow the replacement of sections, but this "pleasure" is not cheap;
• for automation, which provides control of additional circuits. Automatic installation boiler water temperature and winter / summer mode is present in all models. If you are not sure whether automation will be required in the future, it makes sense to choose boilers with their own automation, which can be installed separately (if required). It makes sense to choose boilers without their own automation if it is really not needed. Although in this case it is possible to install automation from other manufacturers, it will simply require the participation (and payment) of more qualified specialists;
• behind trademark, whose fame also has a cost, and the reputation of the manufacturer gives hope for more high level product quality.

In addition to the considered models, the market offers products from several more manufacturers. This leaves room for the manifestation of their own analytical abilities.

In any case, the choice of parameters of boiler equipment for the needs of the designed heating system is the responsibility of specialists, and the consumer has the right to understand the validity of his own costs for the purchase of equipment that will be offered to him.

Inzh-In specialists have the necessary qualifications to make a reasonable choice of equipment that meets your capabilities and the technical needs of the designed heating system for your home.

Consider an example of calculating the power of the boiler, the cost of heating.

Target:

• - diesel boiler;
• - electric boiler;
• - gas boiler.

• - solid fuel boiler(coal);
• - solid fuel boiler (pellet);
• - diesel boiler;
• - electric boiler;
• - gas boiler.

Initial data:

Option 1.

Option 2.

Option 3.

Option 4.

Solutions:

Object location: Moscow.

Option 1

• A two-story house with an area of ​​300 square meters, a ceiling height of 2.5 meters, the height of the building in the ridge is 6.5 meters.
• Dimensions building:
  • Length: 15 m
  • Width: 10 m
• 150 square meters.
• 862.5 cubic meters.
• Heating system- closed.
• Degree of insulation- weak:
  • wall material - concrete on crushed stone, layer thickness: 0.5 m;
  • roof material - resinous pine (15% wet), layer thickness: 0.03 m;
  • the floor is not insulated;
  • glazing - double glazing in a separate partition, area: 32.0 square meters;
  • entrance openings - wooden outer doors (two doors), area: 5 square meters.
• Ventilation premises medium - 50%
• in the house: 20 °C.
• Hot water supply not required.

• Heat loss through walls: 27.29 kW;
• Heat loss through the roof: 30.54 kW;
• Heat loss through inlets: 1.2 kW;
• Heat loss through the floor: 3.51 kW;
• Heat loss through windows: 4.73 kW.

67.27 kW.

Calculation of ventilation.

• Air exchange per 1 square meter: 0.12 m3/h;
• Total air volume for ventilation: 431.25 m3/h;
• Total heat loss by ventilation: 12 kW.

Total heat loss of the facility: 79.27 kW.

Required boiler power.

• Heat loss by the object: 79.27 kW;
• Boiler power reserve: 10%;
• 88 kW.

• KOMPAKT MAX 100 kW(for burning coal);
• OPTIMA PLUS MAX 100 kW(for burning wood).

Boiler efficiency: 90%

Heating cost:

147 464 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 90%.

35 842 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 90%.

330 320 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 90%.

84 075 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 90%.

540 702 rubles for the season.
33 rub/liter and boiler efficiency of 90%.

78 958 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 90%.

Boiler efficiency: 80%

Heating cost:

Heating cost coal(5600 kcal/kg) will be 165 897 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 80%.

40 322 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 80%.

The cost of heating with pellets will be 371 610 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 80%.

The cost of heating with wood will be 94 584 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 80%.

The cost of heating with diesel fuel will be 608 290 rubles for the season.
At the price of diesel fuel - 33 rub/liter and boiler efficiency of 80%.

The cost of gas heating will be 88 828 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 80%.

Boiler efficiency: 70%

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 189 597 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 70%.

The cost of heating with coal (4800 kcal/kg) will be 46 083 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 70%.

The cost of heating with pellets will be 424 697 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 70%.

The cost of heating with wood will be 108 096 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 70%.

The cost of heating with diesel fuel will be 695 189 rubles for the season.
At the price of diesel fuel - 4.36 rubles/liter and boiler efficiency of 70%.

For a 100 kW boiler, a chimney with an internal diameter of 250 mm and height 11 m.

Option 2

• A three-story house with an area of ​​300 square meters, a ceiling height of 2.8 meters, the height of the building in the ridge is 10.5 meters.
• Dimensions building:
  • Length: 10 m
  • Width: 10 m
• 100 square meters.
• The volume of the building, taking into account the height in the ridge, is: 945 cubic meters.
• Heating system- closed.
• Degree of insulation- average:
  • wall material - wooden beam, layer thickness: 0.3 m;
  • roof material - Scotch pine (15% wet), layer thickness: 0.02 m;
  • roofing - tiles (catepal), thickness: 0.002 m;
  • the floor is not insulated;
  • glazing - conventional, area: 35 square meters;
  • entrance openings - wooden external doors, area: 3 square meters.
• Ventilation premises medium - 50%
• Desired comfortable temperature in the house: 20 °C.
• Hot water supply- indirect heating boiler - 400 liters (family of 6 people).

Calculation of central heating.

• Heat loss through walls: 11.36 kW;
• Heat loss through the roof: 4.53 kW;
• Heat loss through inlets: 0.72 kW;
• Heat loss through the floor: 2.48 kW;
• Heat loss through windows: 5.99 kW.

Total heat loss for heating: 25.08 kW.

Calculation of hot water supply.

• The consumption of hot water per person is 70 liters per day. For a family of six people, the consumption of hot water will be 420 l / day.
• Heat consumption for water heating: 1.37 kW.

Calculation of ventilation.

• Air exchange per 1 square meter: 0.13 m3/h;
• Total air volume for ventilation: 472.5 m3/h;
• Total heat loss by ventilation: 13.15 kW.

Total heat loss of the facility: 39.6 kW.

Required boiler power.

• Heat loss by the object: 39.6 kW;
• Boiler power reserve: 10%;
• Recommended boiler power: 44 kW.

• Defro DUO 50 kW(for burning coal);
• AGRO UNI 50 kW
• OPTIMA PLUS MAX 50 kW(for burning wood).

Fuel consumption for heating. Heating cost.

Boiler efficiency: 90%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 5040 kcal / kg or 5.85 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 4320 kcal / kg or 5.02 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 2250 kcal / kg or 2.61 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 3060 kcal / kg or 3.55 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 9000 kcal / kg or 10.45 kWh / kg.
6. Gas (9500 kcal/kg). Taking into account the efficiency of the boiler - 8550 kcal / kg or 9.93 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 83 389 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 90%.

The cost of heating with coal (4800 kcal/kg) will be 20 268 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 90%.

The cost of heating with pellets will be 186 791 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 90%.

The cost of heating with wood will be 47 543 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 90%.

The cost of heating with diesel fuel will be 305 760 rubles for the season.
At the price of diesel fuel - 33 rub/liter and boiler efficiency of 90%.

The cost of gas heating will be 44 650 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 90%.

Boiler efficiency: 80%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 4480 kcal / kg or 5.20 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 3840 kcal / kg or 4.46 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 2000 kcal / kg or 2.32 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 2720 kcal / kg or 3.16 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 8000 kcal / kg or 9.29 kWh / kg.
6. Gas (9500 kcal/kg). Taking into account the efficiency of the boiler - 7600 kcal / kg or 8.82 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 93 813 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 80%.

The cost of heating with stone (4800 kcal / kg) will be 22 802 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 80%.

The cost of heating with pellets will be 210 140 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 80%.

The cost of heating with wood will be 53 486 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 80%.

The cost of heating with diesel fuel will be 343 980 rubles for the season.
At the price of diesel fuel - 33 rub/liter and boiler efficiency of 80%.

The cost of gas heating will be 50 231 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 80%.

Boiler efficiency: 70%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 3920 kcal / kg or 4.55 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 3360 kcal / kg or 3.9 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 1750 kcal / kg or 2.03 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 2380 kcal / kg or 2.76 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 7000 kcal / kg or 8.13 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 107 214 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 70%.

The cost of heating with coal (4800 kcal/kg) will be 26 059 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 70%.

The cost of heating with pellets will be 240 160 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 70%.

The cost of heating with wood will be 61 127 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 70%.

The cost of heating with diesel fuel will be 393 120 rubles for the season.
At the price of diesel fuel - 4.36 rubles/liter and boiler efficiency of 70%.

For a 50 kW boiler, a chimney with an internal diameter of 200 mm and height 9 m.

Option 3

• A two-story house with an area of ​​300 square meters, a ceiling height of 3 meters, the height of the building in the ridge is 7.5 meters.
• Dimensions building:
  • Length: 15 m
  • Width: 10 m
• The floor area of ​​the first floor (average) is: 300 (building area) / 2 (number of floors) = 150 square meters.
• The volume of the building, taking into account the height in the ridge, is: 1012.5 cubic meters.
• Heating system- closed.
• Degree of insulation- above average:
  • wall material - silica brick, layer thickness: 0.25 m;
  • wall insulation - mineral wool, insulation thickness: 0.1 m;
  • roof material - spruce (15% wet), layer thickness: 0.04 m;
  • roof insulation - mineral wool, insulation thickness: 0.05 m;
  • roofing - slate (asbestos), thickness: 0.008 m;
  • floor insulation material - expanded clay 200, insulation thickness: 0.05 m;
  • glazing - double glazing in a separate partition, area: 25 square meters;
  • entrance openings - metal insulated outer doors (two doors), area: 5 square meters.
• Ventilation premises medium - 50%
• Desired comfort temperature in the house: 20 °C.
• Hot water supply not required.

Calculation of central heating.

• For the construction of such an area, dimensions (15m x 10m) and the degree of insulation, heat loss will be:
• Heat loss through walls: 4.34 kW;
• Heat loss through the roof: 6.1 kW;
• Heat loss through inlets: 0.12 kW;
• Heat loss through the floor: 2.92 kW;
• Heat loss through windows: 3.69 kW.

Total heat loss for heating: 17.18 kW.

Calculation of hot water supply.

• Heat consumption for water heating: 0 kW.

Calculation of ventilation.

• Air exchange per 1 square meter: 0.14 m3/h;
• Total air volume for ventilation: 506.25 m3/h;
• Total heat loss by ventilation: 14.09 kW.

Total heat loss of the facility: 31.27 kW.

Required boiler power.

• Heat loss by the object: 31.27 kW;
• Boiler power reserve: 10%;
• Recommended boiler power: 35 kW.

• Defro DUO 35 kW(for burning coal);
• AGRO UNI 35 kW(for burning pellets and biomass);
• OPTIMA COMFORT PLUS 35 kW(for burning wood).

Fuel consumption for heating. Heating cost.

Boiler efficiency: 90%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 5040 kcal / kg or 5.85 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 4320 kcal / kg or 5.02 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 2250 kcal / kg or 2.61 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 3060 kcal / kg or 3.55 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 9000 kcal / kg or 10.45 kWh / kg.
6. Gas (9500 kcal/kg). Taking into account the efficiency of the boiler - 8550 kcal / kg or 9.93 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 58 190 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 90%.

The cost of heating with coal (4800 kcal/kg) will be 14 144 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 90%.

The cost of heating with pellets will be 130 347 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 90%.

The cost of heating with wood will be 33 176 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 90%.

The cost of heating with diesel fuel will be 213 365 rubles for the season.
At the price of diesel fuel - 33 rub/liter and boiler efficiency of 90%.

The cost of gas heating will be 31 157 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 90%.

Boiler efficiency: 80%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 4480 kcal / kg or 5.20 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 3840 kcal / kg or 4.46 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 2000 kcal / kg or 2.32 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 2720 kcal / kg or 3.16 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 8000 kcal / kg or 9.29 kWh / kg.
6. Gas (9500 kcal/kg). Taking into account the efficiency of the boiler - 7600 kcal / kg or 8.82 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 65 464 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 80%.

The cost of heating with stone (4800 kcal / kg) will be 15 911 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 80%.

The cost of heating with pellets will be 146 640 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 80%.

The cost of heating with wood will be 37 324 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 80%.

The cost of heating with diesel fuel will be 240 036 rubles for the season.
At the price of diesel fuel - 33 rub/liter and boiler efficiency of 80%.

The cost of gas heating will be 35 052 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 80%.

Boiler efficiency: 70%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 3920 kcal / kg or 4.55 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 3360 kcal / kg or 3.9 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 1750 kcal / kg or 2.03 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 2380 kcal / kg or 2.76 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 7000 kcal / kg or 8.13 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 74 816 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 70%.

The cost of heating with coal (4800 kcal/kg) will be 18 185 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 70%.

The cost of heating with pellets will be 167 589 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 90%.

The cost of heating with wood will be 42 655 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 90%.

The cost of heating with diesel fuel will be 274 327 rubles for the season.
At the price of diesel fuel - 4.36 rubles/liter and boiler efficiency of 90%.

For a 35 kW boiler, a chimney with an internal diameter of 200 mm and height 8 m.

Option 4

• A three-story house with an area of ​​300 square meters, a ceiling height of 3.2 meters, the height of the building in the ridge is 11.5 meters.
• Dimensions building:
  • Length: 10 m
  • Width: 10 m
• The floor area of ​​the first floor (average) is: 300 (building area) / 3 (number of floors) = 100 square meters.
• The volume of the building, taking into account the height in the ridge, is: 1055 cubic meters.
• Heating system- closed.
• Degree of insulation- high:
  • wall material - red clay brick, layer thickness: 0.7 m;
  • wall insulation - polystyrene ps-1, insulation thickness: 0.15 m;
  • roof material - Scotch pine (15% wet), layer thickness: 0.04 m;
  • roof insulation - mineral wool, insulation thickness: 0.1 m;
  • roofing - profiled sheet, thickness: 0.002 m;
  • floor insulation material - expanded clay 200, insulation thickness: 0.1 m;
  • glazing - 3-chamber pvc profiles, area: 26 square meters;
  • entrance openings - metal insulated outer doors, area: 3 square meters.
• Ventilation premises medium - 50%
• Desired comfort temperature in the house: 20 °C.
• Hot water supply- indirect heating boiler - 250 liters (family of 4 people).

Calculation of central heating.

• For the construction of such an area, dimensions (10m x 10m) and the degree of insulation, heat loss will be:
• Heat loss through walls: 4.45 kW;
• Heat loss through the roof: 2.38 kW;
• Heat loss through inlets: 0.07 kW;
• Heat loss through the floor: 1.75 kW;
• Heat loss through windows: 2.82 kW.

Total heat loss for heating: 11.47 kW.

Calculation of hot water supply.

• The consumption of hot water per person is 70 liters per day. For a family of four, the consumption of hot water will be 280 l / day.
• Heat consumption for water heating: 0.91 kW.

Calculation of ventilation.

• Air exchange per 1 square meter: 0.15 m3/h;
• Total air volume for ventilation: 527.5 m3/h;
• Total heat loss by ventilation: 14.68 kW.

Total heat loss of the facility: 27.06 kW.

Required boiler power.

• Heat loss by the object: 27.06 kW;
• Boiler power reserve: 10%;
• Recommended boiler power: 30 kW.

• COMFORT EKO 30 kW(for burning coal);
• DEFRO AKM UNI 30 kW(for burning pellets and biomass);
• OPTIMA COMFORT PLUS 30 kW(for burning wood).

Fuel consumption for heating. Heating cost.

Boiler efficiency: 90%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 5040 kcal / kg or 5.85 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 4320 kcal / kg or 5.02 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 2250 kcal / kg or 2.61 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 3060 kcal / kg or 3.55 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 9000 kcal / kg or 10.45 kWh / kg.
6. Gas (9500 kcal/kg). Taking into account the efficiency of the boiler - 8550 kcal / kg or 9.93 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 56 835 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 90%.

The cost of heating with coal (4800 kcal/kg) will be 13 814 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 90%.

The cost of heating with pellets will be 127 310 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 90%.

The cost of heating with wood will be 32 404 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 90%.

The cost of heating with diesel fuel will be 208 394 rubles for the season.
At the price of diesel fuel - 33 rub/liter and boiler efficiency of 90%.

The cost of gas heating will be 30 432 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 90%.

Boiler efficiency: 80%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 4480 kcal / kg or 5.20 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 3840 kcal / kg or 4.46 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 2000 kcal / kg or 2.32 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 2720 kcal / kg or 3.16 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 8000 kcal / kg or 9.29 kWh / kg.
6. Gas (9500 kcal/kg). Taking into account the efficiency of the boiler - 7600 kcal / kg or 8.82 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 63 939 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 80%.

The cost of heating with stone (4800 kcal / kg) will be 15 541 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 80%.

The cost of heating with pellets will be 143 224 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 80%.

The cost of heating with wood will be 36 454 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 80%.

The cost of heating with diesel fuel will be 234 443 rubles for the season.
At the price of diesel fuel - 33 rub/liter and boiler efficiency of 80%.

The cost of gas heating will be 34 235 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 80%.

Boiler efficiency: 70%

1. Hard coal (5600 kcal/kg). Taking into account the efficiency of the boiler - 3920 kcal / kg or 4.55 kWh / kg.
2. Hard coal (4800 kcal/kg). Taking into account the efficiency of the boiler - 3360 kcal / kg or 3.9 kWh / kg.
3. Pellets (2500 kcal/kg). Taking into account the efficiency of the boiler - 1750 kcal / kg or 2.03 kWh / kg.
4. Wood (3400 kcal/kg). Taking into account the efficiency of the boiler - 2380 kcal / kg or 2.76 kWh / kg.
5. Diesel fuel (10000 kcal/kg). Taking into account the efficiency of the boiler - 7000 kcal / kg or 8.13 kWh / kg.

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 73 073 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 70%.

The cost of heating with coal (4800 kcal/kg) will be 17 761 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 70%.

The cost of heating with pellets will be 163 684 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 70%.

The cost of heating with wood will be 41 662 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 70%.

The cost of heating with diesel fuel will be 267 935 rubles for the season.
At the price of diesel fuel - 4.36 rubles/liter and boiler efficiency of 70%.

For a 30 kW boiler, a chimney with an internal diameter of 180 mm and height 8 m.

The degree of insulation is determined on the basis of the total heat loss of the building and depends on the material, thickness and number of layers:

• - enclosing structures
• - walls;
• - wall insulation;
• - roofs;
• - roof insulation;
• - roof coverings;
• - floor insulation;

And also on the type and area of ​​​​glazing and entrance openings.

Examples of uninsulated buildings:

The walls are single-layer (without insulation), made of a material with a coefficient of thermal conductivity above 1.300 - concrete on crushed stone, reinforced concrete, solid concrete ...

Roof and floor insulation is single-layer or absent.

Examples of buildings with a low degree of insulation:

The walls are single-layer, made of a material with a coefficient of thermal conductivity from 0.440 to 1.300 - silicate brick, ceramic brick, slag brick, red clay brick, FBS block, alabaster slab, hollow brick.

The floor and roof are insulated.

Examples of buildings with an average degree of insulation:

Mostly single-layer, made of a material with a thermal conductivity coefficient from 0.090 to 0.440 - TEPLOSTEN block, multilayer building cardboard, wood, silica brick, ceramic brick, heat-insulating concrete, wooden beam, gypsum cardboard, expanded clay concrete, foam concrete, building gypsum, ceramic brick (hollow), hollow brick.

The floor and roof are insulated.

Examples of buildings with a high degree of insulation:

Mostly two- or multi-layer, walls and heaters are made of a material with a thermal conductivity coefficient for walls - up to 1.000, for heaters - from 0.001 to 0.085 - polyurethane foam, fiberglass, foam plastic, polystyrene, expanded polystyrene, foam rubber, mineral wool, glass wool, dry wood sawdust.

The floor and roof are insulated.