Gas boiler for heating 120 m2. Solid fuel boiler for heating a private house. Examples of buildings with a low degree of insulation

1. Classification of heating systems Everyone who determines what his heating system should be has two main criteria: 1) the area of ​​\u200b\u200bthe heated room, depending on whether it is a permanent dwelling or, for example, a hunting or garden house; 2) the presence and type

2. House heating schemes 2.1. Heating scheme for a house with an area of ​​up to 100 m2

2.1. Heating scheme for a house with an area of ​​​​up to 100 m2 As mentioned above, small buildings are suitable for this category, in which, as a rule, they do not live permanently, but come for weekends, holidays, etc. Previously, such houses were heated using AOGV stoves or boilers . but

2.3. Heating scheme for a house with an area of ​​​​up to 400–500 m2 This type of structure is the most serious both during construction and equipment engineering communications. It will be correct to precede all work with thermal and hydraulic calculation. Obviously, rooms with the same volume

3. Elements of the heating system Above we have given the main circuit diagrams heating systems, made approximate equipment specifications. In one case or another, all these components will be found in all technical solutions each supplier. Next we want

Appendix 3. An example of a water heating system for an individual residential building Two residential floors (Fig. P.1, P.2) and the heated part of the basement (Fig. P.3) have a total area of ​​216 m2. (In the figure: 1, 2, 3 - vertical building axes; A, B, C, D - horizontal; 20, 32, 40 - pipe diameters; 1000/500K22 -

Appendix 4. Calculation of underfloor heating heat flow received

Why in England the owner of a house for two million pounds can have an old cheap car, and in Russia a person may not have a home, but will there be a Porsche? DMITRY GOLOLOBOVDirector of Gololobov and Co (London), former head of the Yukos legal department

Installation of the EOU electric boiler in the heating system.

GUIDE FOR INFORMATION PURPOSES

(Not a public offer)

Read the instructions carefully before connecting the boiler to the heating system!

P Before starting the installation of the boiler, it is necessary to flush the heating system with clean tap water to remove possible assembly debris.

Installation

The boiler must be installed vertically, out of the reach of children. Above the boiler must remain free place for preventive work.

Scheme of connecting the boiler "EOU" to the radiator heating system.

1 - Boiler

2 - Control panel + thermostat

3 - Circulation pump

4 - Expansion tank + safety group

5 – Shut-off valves

6 - Radiator

7 – drain cock

8 - Pipe 20 mm ( outside diameter)

9 - Pipe 25 mm ( outside diameter)

The boiler kit includes:

1. Boiler

2. Control panel

3. Instruction manual

To control the heating temperature of the boiler (up to 60 degrees Celsius with the possibility of programming the boiler for every daysold separately (Available on site)

IMPORTANT! To control the boilers, it is necessary in the Thermoregulator settings to set the operation only according to the coolant temperature sensor. Disable air sensor! ()

Forbidden! Install taps, shut-off or control valves in the area from the boiler outlet to the expansion tank (without an additionally installed pressure relief valve, safety group). FCoarse filter on the system, you do not need to install it, because. in case of contamination, the circulation of the coolant is reduced, which will lead to overheating of the coolant.

Not recommended: Installing the boiler in a system with radiator batteries large volume(type of Soviet cast iron) with a total system capacity of more than 70 liters and aluminum radiators(over time, aluminum oxide is released, which negatively affects the stable operation of the boiler).

Recommended: Use regular bimetal radiators, plastic pipes reinforced with fiberglass, with a diameter corresponding to the connection scheme, fill the system with only standard Koterm Eco antifreeze.

Power connection:

To connect the boiler from the power input, a cable with a cross section of at least 4 mm 2 is required, connected through a separate input machine with a nominal value of 30A (the use of an RCD is unacceptable). Check the correct marking of the supply cables and observe it when connecting the boiler. Must be fulfilled protective earth with a resistance of not more than 4 ohms from a copper wire with a cross section of 4-6 mm 2. The boiler must be connected, observing all the rules of the PUE and fire safety.

Turning on the boiler and selecting the operating mode

1. Turn on the automatic switch on the boiler control panel

2. Set the desired temperature on the thermostat. After reaching the set temperature, the boiler will turn off automatically and turn on when the temperature in the system drops 4 degrees below the value set on the thermostat.

Electricity consumption directly depends on the set temperature, the higher the set temperature, the greater the consumption. The boiler will reach its declared power rating when the temperature reaches 50 degrees Celsius for the coolant.

For example: A 6 kW boiler will reach a consumption power of 6 kW when the coolant temperature in the system reaches 50-55 degrees Celsius. Electricity consumption at a given 30 degrees of heating on the thermostat will be approximately 3 kW.

Advantages of a 6 kW boiler

1. supereconomy - the main advantage of electrode boilers "EOU" is super-economical, which distinguishes them from the products of the closest competitors. Innovative patented technology for heating liquids allows you to achieve high efficiency up to 99% (1 liter of water in 30 seconds), which makes it possible to heat rooms large area from 120 to 220 sq. meters (depending on the boiler model) from a 380 volt network, consuming significantly less electricity (depending on the selected temperature regime work). We offer an electric boiler with unique properties, superior in saving electricity to any heating elements and induction boilers at least 30-40% and approximate in terms of their economic and operational indicators for use gas equipment.

Efficiency calculationelectric boiler

The efficiency of an electric boiler when heating water can be determined as follows:

where N H is the power required to heat the water flowing through the electric boiler with a mass flow rate G B from the initial temperature T H to the final temperature T K , W;

Power N H and N O can be defined as:

N H= G BxCR,UD(H 2 O x (T K - T N));N E \u003d I x U.

where С Р, UD – isobaric specific heat capacity of water, recommended for technical calculations С Р, UD = 4180 J/K,

I, U - current strength and voltage drop in the electrical circuit of the electric water heater, then:

1st experiment:

2nd experiment:

3rd experiment:

4th experiment:

2. The ideal solution for those who do not have a gas supply - on the this moment most relatively in an inexpensive way home heating is the use of gas. However, if you understand this method has its drawbacks:

The high cost of gas equipment;

The high cost of connecting to the gas main;

Mandatory coordination of installation and connection is required;

fire hazard;

In addition, gas becomes more expensive every year, and according to some experts, gas and electricity prices may become equal as early as 2020. These factors make the installation of gas equipment unprofitable.

* (calculation was made in 2013 prices)

3. Electrode technology allows you to set the power consumption from a given temperature - The boiler reaches the maximum power consumption of electricity only when the highest recommended temperature is set to 55 degrees Celsius on the thermostat. Up to this value, the boiler will consume much less electricity - in proportion to the set temperature.

4. Compactand easy to use and install – due to its small size, there is no need for a separate technical room. For example: it can be installed under a sink or stairs. Installation of the boiler requires a minimum of labor (See installation instructions).

5. Inexpensive – due to its unique structure and use polymer materials the boiler has a relatively low cost compared to similar boilers on the market.

6. Durabilityboiler operation and minimum maintenance – Prevention of boiler operation and replacement of the coolant in the heating system is required to be carried out no more than 3 years of operation. Before the start of the season, if necessary (in case of leaks), it is required to fill the system with coolant.

7. Coolant (Antifreeze) KOTERM ECO prevents defrosting of the heating system- all seasonal, environmentally friendly coolant KOTERM ECO containing special components that protect your heating system from corrosion and freezing in winter period, as well as ensure long and stable operation of the electric boiler.

8. remoteboiler heating control - If you installed the boiler, under a sink, stairs, basement or utility room, there is no need to access the boiler to control the heating temperature, this can be done remotely. The thermostat can be installed in a place convenient for you (for example: in the bathroom, living room, kitchen, etc.). The temperature controller has the function of internal memory of the set temperature, which allows the device to turn on independently from the set value, without extraneous re-enabling of the device, in cases of a short-term power outage. This function can save your home and heating system from defrosting during your absence.

9. Using the boiler with a system of warm water floors - will allow you to be independent of the use of a centralized heating system, use a warm floor in the off-season, as well as set a floor heating temperature that is comfortable for you.

10. Silentand safe – boilers operate silently correct installation and operation are fire and electrically safe, certified for use.

The climatic company "Termomir" offers in a wide range electric boilers different power. Check out the information or call our consultants to choose desired model boiler.

Electric boilers are designed for heating private house, dacha, apartment (including for apartment heating) , various administrative, commercial and industrial facilities ranging from 30 to several thousand square meters. m. Electric heating is optimal where there is no main gas or strict requirements for the environmental friendliness of heating devices. Also, an electric boiler is often used as a backup heating option, in case of problems with the main boiler, for example, gas.

The electric heating boiler consists of a heat exchanger, a block heating elements, control unit and control and safety devices. Some electric boilers are equipped with a circulation pump, expansion tank, safety valve and filter. The coolant heated by electricity circulates through a system of pipes and radiators, providing space heating, as well as heating water in the boiler. An electric double-circuit boiler is used for heating and hot water supply, a single-circuit boiler is used only for heating a house, as well as for underfloor heating.

pros:
Compared to boilers using other fuels, electric boilers are cheaper, more compact, safer and quieter. Connecting electric boilers is much simpler and less expensive than other types of boilers. Due to their compact size and low weight, electric boilers are wall-mounted, do not require a separate boiler room, and installation is allowed in utility or utility rooms, pantries, in the kitchen, in the basement, and even in living rooms.
Electric boilers are easy to operate and do not create harmful emissions and odors, do not require constant maintenance, expensive cleaning and regular purchase of fuel.

Minuses:
Dependence on stable availability of electricity and high requirements to quality and reliability electrical wiring. The relatively high cost of electricity should also be taken into account. For informed decision When buying an electric boiler, it is recommended to make a preliminary calculation of the cost of electricity.

The boiler will be used in the Russian climate from September to April inclusive, i.e. only 8, not 12 months of the year. In autumn and spring, the use of the boiler will be carried out at a minimum, in winter - at full power. Thanks to the built-in automation, the operation of the boiler will not be continuous, on average - about 8 hours a day, so the approximate electricity costs for the year can be calculated using the following formula:

240 days X 8 hours a day X boiler capacity X cost of 1 kW of electricity

Electric boilers with a power of up to 12 kW are produced single-phase (power supply 220 V) and three-phase (power supply 380 V), and boilers with a power of more than 12 kW - only three-phase. Most electric boilers with a power of more than 6 kW allow multi-stage power adjustment.

To save energy without sacrificing comfort, various remote programmers that can maintain the temperature in the room according to a user-defined schedule help.

To select an electric boiler, you need to find out the power of the device. Basic calculation - 1 kW of boiler power is enough to heat 10 m2 of a well-insulated room with a ceiling height of up to 3 m.
To select a specific model of an electric boiler, you can contact the consultants of the Thermomir company. Remember that in addition to the boiler itself, it is necessary to purchase other elements of a complete heating and water supply system (radiators, pipes, pumps, thermostats, a boiler and much more), so it is better to entrust the selection of equipment and its complete set to professionals.

At the moment, in the assortment of our company are presented as the best electric boilers from European manufacturers, and good inexpensive Russian electric boilers.

See also:

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 city.

Option 1

• A one-storey house with an area of ​​120 square meters, a ceiling height of 2.5 meters, the height of the building in the ridge is 3.5 meters.
• Dimensions building:
  • Length: 12 m
  • Width: 10 m
• 120 square meters.
• 360 cubic meters.
• Heating system- closed.
• Degree of insulation- weak:
  • wall material - silicate brick, layer thickness: 0.5 m;
  • roofing material - wood - boards, layer thickness: 0.02 m;
  • roofing - slate (asbestos), thickness: 0.005 m;
  • the floor is not insulated;
  • glazing - double glazing in a separate partition, area: 10 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: 8.8 kW;
• Heat loss through the roof: 5.21 kW;
• Heat loss through inlets: 1.2 kW;
• Heat loss through windows: 1.48 kW.

19.59 kW.

Calculation of ventilation.

• Total air volume for ventilation: 180 m3/h;
• Total heat loss by ventilation: 5.01 kW.

Total heat loss of the facility: 24.59 kW.

Required boiler power.

• Heat loss by the object: 24.59 kW;
• Boiler power reserve: 10%;
• 28 kW.

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

Boiler efficiency: 90%

Heating cost:

45 762 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 90%.

11 123 rubles for the season.
At the price of coal - 1250 rub/t and boiler efficiency of 90%.

102 507 rubles for the season.
At the price of pellets - 6000 rub/t and boiler efficiency of 90%.

26 090 rubles for the season.
At the price of wood - 1350 rub/cubic meters and boiler efficiency of 90%.

167 794 rubles for the season.
33 rub/liter and boiler efficiency of 90%.

24 503 rubles for the season.
At the price of gas - 4.36 rub/cu.m. and boiler efficiency of 90%.

Boiler efficiency: 80%

Heating cost:

The cost of heating with coal (5600 kcal/kg) will be 51 482 rubles for the season.
At the price of coal - 6000 rub/t and boiler efficiency of 80%.

12 513 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 115 320 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 29 352 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 188 768 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 27 566 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 58 837 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 14 301 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 131 794 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 33 545 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 215 735 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.

Option 2

• One-story house with an area of ​​120 square meters, ceiling height of 2.5 meters, the height of the building in the ridge - 4 meters.
• Dimensions building:
  • Length: 12 m
  • Width: 10 m
• The floor area of ​​the first floor (average) is: 120 (building area) / 1 (number of floors) = 120 square meters.
• The volume of the building, taking into account the height in the ridge, is: 390 cubic meters.
• Heating system- open.
• Degree of insulation- average:
  • wall material - wooden beam, layer thickness: 0.6 m;
  • roof material - Scotch pine (15% wet), layer thickness: 0.02 m;
  • roof insulation - mineral wool, insulation thickness: 0.05 m;
  • roofing - tiles (catepal), thickness: 0.002 m;
  • the floor is not insulated;
• 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 (12m x 10m) and the degree of insulation, heat loss will be:
• Heat loss through walls: 2.05 kW;
• Heat loss through the roof: 5.23 kW;
• Heat loss through the floor: 2.89 kW;

Total heat loss for heating: 12.3 kW.

Calculation of hot water supply.

• Heat consumption for water heating: 0 kW.

Calculation of ventilation.

• Air exchange per 1 square meter: 0.05 m3/h;
• Total air volume for ventilation: 195 m3/h;
• Total heat loss by ventilation: 5.43 kW.

Total heat loss of the facility: 17.72 kW.

Required boiler power.

• Heat loss by the object: 17.72 kW;
• Boiler power reserve: 10%;
• Recommended boiler power: 20 kW.

• COMFORT EKO 20 kW(for burning coal);
• DEFRO AKM UNI 22 kW(for burning pellets and biomass);
• OPTIMA COMFORT PLUS 20 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 32 988 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 8 018 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 73 893 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 18 808 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 120 956 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 17 663 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 37 112 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 9 020 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 83 130 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 21 159 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 136 076 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 19 871 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 42 413 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 10 309 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 95 006 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 24 181 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 155 515 rubles for the season.
At the price of diesel fuel - 4.36 rubles/liter and boiler efficiency of 70%.

160 mm and height 7 m.

Option 3

• A two-story house with an area of ​​120 square meters, a ceiling height of 3 meters, the height of the building in the ridge is 8 meters.
• Dimensions building:
  • Length: 10 m
  • Width: 6 m
• 60 square meters.
• The volume of the building, taking into account the height in the ridge, is: 420 cubic meters.
• Heating system- closed.
• Degree of insulation- above average:
  • wall material - Teplosten block, layer thickness: 0.6 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;
  • the floor is not insulated;
  • glazing - two-chamber double-glazed window (with interst. distance 6 mm), area: 14 square meters;
  • entrance openings - metal insulated outer doors, area: 2.5 square meters.
• Ventilation premises medium - 50%
• Desired comfort temperature in the house: 20 °C.
• Hot water supply– boiler indirect heating- 120 liters (family of 2).

Calculation of central heating.

• Heat loss through walls: 1.86 kW;
• Heat loss through the roof: 2.81 kW;
• Heat loss through inlets: 0.06 kW;
• Heat loss through the floor: 1.66 kW;
• Heat loss through windows: 1.78 kW.

Total heat loss for heating: 8.18 kW.

Calculation of hot water supply.

• Consumption hot water per person is 70 liters per day. For a family of two, the consumption of hot water will be 140 l / day.
• Heat consumption for water heating: 0.46 kW.

Calculation of ventilation.

• Air exchange per 1 square meter: 0.06 m3/h;
• Total air volume for ventilation: 210 m3/h;
• Total heat loss by ventilation: 5.84 kW.

Total heat loss of the facility: 14.48 kW.

Required boiler power.

• Heat loss by the object: 14.48 kW;
• Boiler power reserve: 10%;
• Recommended boiler power: 16 kW.

• COMFORT EKO 20 kW(for burning coal);
• DEFRO AKM UNI 22 kW(for burning pellets and biomass);
• OPTIMA COMFORT PLUS 20 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 30 185 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 7 337 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 67 615 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 17 210 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 110 679 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 16 162 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 33 958 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 8 254 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 76 067 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 19 361 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 124 514 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 18 183 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 38 810 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 9 433 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 86 933 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 22 127 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 142 302 rubles for the season.
At the price of diesel fuel - 4.36 rubles/liter and boiler efficiency of 70%.

For a 20 kW boiler, a chimney with an internal diameter of 160 mm and height 7 m.

Option 4

• A two-story house with an area of ​​120 square meters, a ceiling height of 3.5 meters, the height of the building in the ridge is 9 meters.
• Dimensions building:
  • Length: 10 m
  • Width: 6 m
• The floor area of ​​the first floor (average) is: 120 (building area) / 2 (number of floors) = 60 square meters.
• The volume of the building, taking into account the height in the ridge, is: 480 cubic meters.
• Heating system- open.
• Degree of insulation- high:
  • wall material - red clay brick, layer thickness: 0.7 m;
  • wall insulation - mineral wool, 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 - glass wool, insulation thickness: 0.05 m;
  • glazing - single-chamber double-glazed window, area: 12 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 6m) and the degree of insulation, heat loss will be:
• Heat loss through walls: 2.84 kW;
• Heat loss through the roof: 1.61 kW;
• Heat loss through inlets: 0.07 kW;
• Heat loss through the floor: 1.15 kW;
• Heat loss through windows: 2.05 kW.

Total heat loss for heating: 7.71 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: 0.07 m3/h;
• Total air volume for ventilation: 240 m3/h;
• Total heat loss by ventilation: 6.68 kW.

Total heat loss of the facility: 15.3 kW.

Required boiler power.

• Heat loss of the object: 15.3 kW;
• Boiler power reserve: 10%;
• Recommended boiler power: 17 kW.

• COMFORT EKO 20 kW(for burning coal);
• DEFRO AKM UNI 22 kW(for burning pellets and biomass);
• OPTIMA COMFORT PLUS 20 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 34 954 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 8 496 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 78 296 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 19 928 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 128 164 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 18 716 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 39 323 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 9 558 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 88 084 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 22 419 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 144 184 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 21 055 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 44 941 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 10 923 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 100 667 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 25 622 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 164 782 rubles for the season.
At the price of diesel fuel - 4.36 rubles/liter and boiler efficiency of 70%.

For a 20 kW boiler, a chimney with an internal diameter of 160 mm and height 7 m.

The degree of insulation is determined on the basis of total heat loss 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.

On the modern market heating systems you can find a huge selection of budget options gas wall-mounted boilers, and "flagships", which are distinguished by an improved protection system, longer service life and more high efficiency.

Consider the most common models of wall-mounted gas boilers for heating a room of 120 m2.

How to correctly calculate the boiler power for heating a certain area?

According to the passport data of manufacturers, the heating gas boiler is selected at the rate of 1 kW per 10m2. However, this is a rather tricky figure, since the quality of the insulation of the house, the material of its manufacture, plays an important role. climate zone etc.

Well, for example, take for heating frame house in 120 m2, based on the above calculations, a gas boiler of 12 kW would be enough. However, in reality, this is very little. In addition, if you still need hot water (two-circuit system), then 18 kW will not be enough.

To heat such a house, it is most rational to install double-circuit gas boilers with a capacity of 24 kW to ensure a power reserve. Worked pretty well BAXI boilers, PROTHERM, VIESSMAN, VAILLANT.

Which is better to choose a wall-mounted gas boiler of 120 sq.m?

Of course, there is no single answer to this question, it all depends on your needs. Well, for a choice you have 2 options (not taking into account manufacturers):

• Single-circuit;
• Double-circuit.

Single-circuit heating boilers

These devices are designed exclusively for space heating. Their price is much lower than double-circuit ones, however, in the absence of hot water supply, it is necessary to additionally buy a boiler.

They are most often installed in high-rise buildings that are connected to a centralized supply hot water.

Double-circuit wall-mounted gas boilers for 120 sq.m

This is the most common type of heating boilers, since in addition to heating the room, they provide you with hot water and the efficiency of these systems reaches 109% (Viessman VITODENS 200-W boilers).

This perfect solution for cottages, private houses, offices, etc. They have proven themselves as energy-saving devices with high functionality and ideal efficiency.

termo-rus.ru

What power should be a gas boiler for heating a house of 120 m2

Foreman with over 20 years of experience

I want to change the boiler. I have an old combined gas-firewood. what power should be a gas boiler. single-circuit. floor? living space 120sq.m. 2 floors. no radiators. pipe diameter 76mm ... length 70 meters ... approximately 350 liters of water.

You have the wrong idea about the method for determining the power of a heating boiler. The need for thermal power is determined by the calculation, the purpose of which is to determine the heat loss of the building through the building envelope. The area of ​​\u200b\u200bthe house, its number of storeys and the features of the heating system do not matter. The areas of external walls, roofs, windows and doors, floors on the ground and their thermal conductivity are taken into account. The amount of air exchange in the ventilation system matters. And, of course, climatic conditions, because: "Our land is great and plentiful." For example, in Verkhoyansk the average temperature in January is -45.4 ?С, and in Sochi +6.1 ?С.

The required power of the heat generator can be determined very approximately using the online calculator: https://www.igs-market.ru/index.php?show_aux_page=12.

Based on site materials: https://strmnt.com

fix-builder.com

What power should be a gas boiler for heating a house of 120 m2

I want to change the boiler. I have an old combined gas-firewood. what power should be a gas boiler. single-circuit. floor? living space 120sq.m. 2 floors.. no radiators. pipe diameter 76mm ... length 70 meters ... approximately 350 liters of water.

You have the wrong idea about the method for determining the power of a heating boiler. The need for thermal power is determined by the calculation, the purpose of which is to determine the heat loss of the building through the building envelope. The area of ​​\u200b\u200bthe house, its number of storeys and the features of the heating system do not matter. The areas of external walls, roofs, windows and doors, floors on the ground and their thermal conductivity are taken into account. The amount of air exchange in the ventilation system matters. And, of course, climatic conditions, because: "Our land is great and plentiful." For example, in Verkhoyansk the average January temperature is -45.4 ºС, and in Sochi +6.1 ºС.

The required power of the heat generator can be determined very approximately using the online calculator: https://www.igs-market.ru/index.php?show_aux_page=12.

The need for thermal energy for heating the building and, accordingly, the power of the heat generator depends not least on climatic conditions

On the Internet, a figure of 0.1 kW per 1 m2 “walks”. Indeed, for the heating of the abstract square meter in the average typical house, built in accordance with the long-obsolete heat engineering standards of the times of the USSR, required approximately 0.1 kW per 1 m2 of heated total area. This is 12 kW per 120 m2. But again, this is an irrelevant "average temperature in the hospital" without taking into account the structural features and climatic conditions of the area.

If you want the most accurate and rational choice heating equipment, do not use "average" data, but calculate specific numbers for your home

By the way, how are you going to heat the water for the plumbing? You probably want to install storage boiler indirect heating. It is often recommended not to increase the power of the boiler specifically for the preparation of hot water. Like, the volume of the boiler is large (usually over 100 liters), the supply of hot water is large. It will not end quickly and there is no need for emergency heating of water, as in a double-circuit boiler. However, it should be borne in mind that modern boilers have the priority of preparing hot water for the needs of water supply. That is, if on Friday you take a bath with the whole family in turn, your heating will turn off for several hours until the water temperature in the boiler reaches the set temperature. In cold climates this can be noticeable and the boiler capacity may need to be increased according to the DHW demand. Alas, this will not get rid of heat carrier temperature jumps, it will only reduce them.

You can avoid this situation by installing intelligent automation or manually changing the heating modes. But it is more rational to insulate the house well, then a temporary drop in the temperature of the coolant will not lead to noticeable cooling.

strmnt.com

Heating for a house of 120 sq. meters

It is necessary to choose a method of heating a residential building, first of all, based on the availability of one or another type of fuel. What is the best way to heat?

We offer 4 of the most best options for heating a house with an area of ​​120 m2.

Option 1: gas heating

This option will be the most economical. Therefore, if a main gas pipeline is connected to your house, it is advisable to choose exactly this method heating.

System with gas boiler can work completely independently without the control of the owners of the house.

in the photo is a gas wall-mounted boiler for heating a residential building

Advantages:

• Low costs
• Full automation
• Convenient management

Among the shortcomings, one can note the difficulties with connecting to gas.

Read more about gas heating for a house of 120 sq. m.

If you do not have the opportunity to heat the house with natural gas, you can consider the option of a diesel boiler.

Option 2: diesel fuel

The diesel heating system operates completely autonomously. To store fuel, you will need to install a special plastic container. It can be installed both indoors and outdoors.

Otherwise, this system is the same as in gas heating.

diesel boiler room in a private house

Advantages:

• Full automation
• Convenient and comfortable control

Flaw - high costs for home heating.

For example, for heating a residential building with an area of ​​120 sq. m. will require about 60,000 rubles a year.

Finished example diesel heating house 120 sq. meters

Option 3: electric water heating

This method is the least economical option for residential heating. However, the initial investment will not be as large as with diesel heating.

Another advantage is the compactness and ease of installation of the boiler. It can be installed in any room.

on the photo there is an electric boiler and a water heater in the cottage

This method is well suited for giving. During the absence of the owners, you can turn on the minimum mode to save electricity.

Please note: For a house of 120 sq. m. requires the presence of an electric power of 12 kW.

Look turnkey solution on electric heating Houses