Serves as the basis for the heating system. It is its performance that has a direct impact on the ability of the communication network to provide the home with the required amount of heat. If you correctly and correctly calculate the power heating boiler, this will eliminate the need for extra costs associated with the purchase of additional devices and their operation. When implementing preliminary calculations the selection of equipment will be correct, that is, its heat transfer, laid down by the manufacturer, will help in maintaining its technical parameters.
Base for calculations
The calculation of the power of the heating boiler is a rather significant point. As a rule, this parameter can be compared with the total heat output of the heating system, which is designed to provide a house of a certain size, with a given number of floors, as well as the corresponding thermal properties. For the arrangement of a small private or country house there is no need to purchase a very powerful boiler.
Autonomous heating and boiler power are calculated depending on the area - this is the main parameter if the heat engineering of the building is considered according to the regional climate. AT this case The most important parameter is the area of the house.
What affects the calculation?
If you want to calculate the power of the heating boiler as accurately as possible, then for this you can use the methodology provided by SNiP II-3-79. In this case, when carrying out professional calculations, the following factors must be taken into account:
- average regional temperature in winter time of the year;
- properties used for the construction of enclosing structures of the house;
- type of wiring of the heating circuit;
- area ratio load-bearing structures and openings;
- information for each room separately.
Subtleties of the calculation process
So, the calculation of the heating of the house should be made on the basis of the plan of the house, which serves as the most important document for the calculation. In order for the result to be as accurate as possible, it is required to use information such as data on the number of units of digital and household appliances, since it also releases heat into the room in a certain way. However heating system you can organize without the need for such accurate calculations, and purchase everything with a small margin. This will the right decision. Most often, the power of heating boilers is rounded up to some value, so the purchase of equipment 20-30% more powerful than necessary is the right solution to the problem.
Required parameters
The most primitive calculation method uses this approach: for every 10 square meters of premises of a well-insulated building with standard height ceiling requires 1 kilowatt for heating. If the power of the heating boiler is calculated, which is also used for hot water supply, then for correct calculations you need to add at least 20% more.
For an autonomous heating circuit with unstable pressure in the boiler, it is necessary to add a device, which will increase its power reserve in comparison with the calculated value by at least 15%.
Accounting for heat loss
Regardless of whether the calculation of power electric boiler heating or gas, the operation of the entire system is associated with a certain percentage. Ventilation of the premises is necessary, and if the windows are constantly open, then heat loss for the whole house will be 15% of the energy. With poor wall insulation, approximately 35% will be required to compensate for this shortcoming. Window openings are made so that 10% of heat escapes, and when using old window frames- even more. In the absence of floor insulation, another 15% of valuable heat will go into the ground or basement. The roof is a heat loss of 25%. Before calculating the power of the heating boiler, it is necessary to take all this into account and display it in the calculations.
The simplest formula
In any case, it is required to round off and also increase the resulting value in order to provide a certain margin. That is why, to determine the required value, you can use a fairly simple formula:
- W \u003d S x W beats, where
S represents the total area of the heated building, taking into account residential and domestic rooms in sq. m;
- W is the power of the heating boiler, kW;
- W beats. represents the average statistical specific power applied taking into account a specific climatic area (this characteristic is based on many years of experience in the operation of various heating systems in the regions).
By multiplying the area by the specified indicator, you can get the average power value. It is adjusted based on the features mentioned above.
Electric boilers
Before purchasing any equipment, you need to clarify its main characteristics and how they correspond to the features and requirements of your system. Calculating the power of an electric heating boiler is a complicated procedure, but you need to know this parameter, since it will tell you whether the device is suitable for your particular case or not. In the case of such equipment, power is a paramount parameter, since it is related to the limits set by district power plants. If this value is exceeded, then there is a high probability of operation of limiting machines, due to which the house can be disconnected from the supply electrical energy. When choosing equipment of this class, you must be based on the allowable power, not trying to exceed it, and also correctly calculate the required boiler performance.
On the this moment on sale you can find equipment with a fixed and modulated power. Preferably, samples whose value is constant, so that you can avoid power outages due to exceeding the limit, which often happens with devices with modulated indicators. The choice of this type does not affect economic indicators energy consumption. This characteristic only affects the amount of energy that the heating system receives from the boiler.
The meaning of the results
In an electric heater, heating elements are used inside the heat exchanger. They are responsible for the power of the entire unit. Heating of the heat carrier is carried out during the operation of heating elements and further by means of circulation pump, which supplies everything to the system. For such boilers, as well as other devices in this category, the power is calculated in kilowatts, while we are talking about the heating element parameter. Depending on the number heating elements this parameter can be in the range of 2-60 kW.
What affects power?
Operating parameters electrical devices can be different, among them one of the most important is thermal characteristic, necessary to replenish the heat loss of the building and provide hot water. The calculation of the power of the heating boiler in this case is based on such data as: the heated area, the thermal insulation qualities of the building, the materials of the floors and walls, the surface area with glazing. This set of parameters should definitely be taken into account when conducting heat engineering calculations for each house, as well as specifying the energy required to prepare hot water.
Electric boiler only for small spaces?
Many are convinced that this type of apparatus can only be used to provide normal temperature for houses small area, so their power is very limited. But this is an erroneous assertion. At the moment, on sale you can find boilers that can provide heating for houses with an area of up to 1000 square meters. In this case, the question arises related to the appropriateness of using such equipment. In such cottages, they are most often installed as backup power sources that work when the main one fails. Premises small size allow the use of equipment characterized by low power. These are single phase and three-phase boilers. Devices with a power of more than 6 kilowatts can be multi-stage. With their help, you can best save electricity, since you can not use them constantly in the autumn-spring period.
Such equipment has a whole range of advantages compared to electric. These are economical and highly efficient devices that provide the proper level of heat transfer. Until recently, the installation gas equipment required a special room - a boiler room. At the moment, this is no longer such an urgent requirement, since there are many models with closed camera combustion. Power calculation gas boiler heating is carried out taking into account the following significant parameters: the area of the room; boiler specific power per 10 square meters, corresponding to the climate in the region. Calculation of heating by area is the most common practice. For specific power in zones with different conditions climate there are set values: Moscow region 1.2-1.5 kW; northern regions 1.5-2.0 kW; southern regions 0.7-0.9 kW. Most often, for convenience, an average value is used, which is equal to 1. It turns out that a power equal to 1 kilowatt for every 10 square meters is usually preferred. m of premises.
conclusions
Usually, the calculation of the power of the heating boiler and the heat loss of the building is carried out at the design stage. To ensure the efficiency of the heating system, special conditions must be observed - the arrangement of an appropriate room, which will be equipped with ventilation and a chimney. Now you know how the heating of the house is calculated.
A centralized heating system is not available in all regions of the Russian Federation, and in some regions the cost of housing and communal services is simply prohibitive. Because of this, in private and apartment buildings mount autonomous complexes at the head of the boiler. The choice depends on the living conditions (the presence or absence of a gas main, electricity, etc.) and the budget for the purchase. But before you start searching for a device, you need to calculate the power of the boiler.
In the process of designing a building, heating engineers are always involved, who carry out a complex of complex calculations and select optimal systems hot water supply (DHW) and heating. But what if there is no way to order a professional design? How to correctly calculate the power of a solid fuel gas and electric boiler?
Calculation by area of the house
The task of heating is not only to heat the room, but also to compensate for heat loss in the future. Very often you can find an outdated version - the calculation for square meter housing. That is, the statement is taken as an axiom that per 1 sq. m. area with a ceiling height of up to 2.5 m requires 100 W of thermal energy. The result is corrected for specific indicator power for different climatic zones Russia (SNiP 23-01-99, SP 131.13330.2012 "Construction climatology"). Averaged:
- For the northern regions - 1.5-2.
- In the middle lane - 1.2-1.5.
- Southern regions - 0.7-0.9.
The simplest calculation of the heating boiler power by area is carried out according to the formula:
W = q * S, where:
- q is the specific power factor for a given region;
- S- total area housing.
This is true for houses built in the 50s and 60s. last century. Now sellers of heating equipment use clarifying amendments: a margin of 15 and 20% for single and double circuits.
Moscow region. There is a brick house, 1-storey, total area - 80 sq. m. Power \u003d (80 * 100) * 1.2 \u003d 9,600 watts. Single-circuit boiler - 11.04 kW, double-circuit boiler with DHW priority - 11.52.
Of course, such a calculation cannot be called correct, since the actual heat loss of the house is not taken into account, taking into account its dimensions, material and thickness of the building envelope, the presence or absence of insulation layers, window format, and so on. There is another key factor that is rarely mentioned by sellers - the possibility of self-regulation. Modern gas and electric boilers controlled by automation, have limiting on and off temperatures and a safety group (protection against overheating, dry running, etc.). Solid fuel, on the other hand, most often require constant monitoring, all operations are carried out manually. Few install thermal accumulators for excess heat, therefore, without constant monitoring, there is a high risk of overheating and failure of the entire system. For such boilers, careful calculation is necessary.
House heat loss and power heating boiler
The calculation of thermal losses can be done through special online programs or calculators. Or independently according to the algorithm below. The correct calculation of hot water supply and a heating boiler depends on how much heat is lost per day through walls, windows, floors, ceilings, ventilation, as well as the approximate volume of hot water consumed. To calculate the first factor, the following are taken into account:
- Heat transfer resistance (R) of each building envelope.
- The temperature difference between inside and outside the house.
In thermal engineering, the following formula is used to calculate the thermal transfer resistance of various materials:
R = ΔT / q, where:
- q - the amount of heat lost by 1 sq. m of enclosing structure (W / m²);
- ΔT is the difference between the temperature in the coldest week of the year and the average indoor temperature (°C). As a rule, reference books give ΔT = 50 °C (T outside = -30 °C, T inside = +20 °C.).
Standard R values for various wall materials and windows are shown in the table:
From the tables it is obvious that, for example, the purchase of an electric boiler with a power reserve of 30%, which supposedly should compensate for heat loss through the window - extra waste of money. Double glazing loses 2 times less heat than conventional single-frame glazing, and this is a monthly saving of more than 50 kW.
An accurate calculation of the heating system of a private house includes an adjustment to own data in the region or region. The formula is slightly modified:
R 2 \u003d R 1 x ΔT 2 / ΔT 1, where:
- R 1 - heat loss at ΔT = 50 °С;
- R 2 - heat loss at ΔT according to user data;
- ΔT 1 - standard 50 ° С;
- ΔT 2 is an indicator calculated according to your parameters.
Moscow region. There is a brick house, 1-storey, total area - 80 sq. m, forced ventilation. An electric single-circuit boiler is selected. Calculate the heat loss for 1 room with the following characteristics:
- Area - 40 sq. m (8 * 5).
- Number of outer walls - 2 pcs.
- Ceiling height - 3 m.
- Wall thickness - 76 cm.
- Windows (double glazing) - 4 pcs, 1.8 * 1.2.
- The floor is wooden flooring with insulation.
- Above the ceiling is an attic non-residential space.
- The required temperature inside is +20 °C.
- Limit winter outdoors - -30 ° С.
1. The area of the outer walls (without window openings) S1 \u003d (8 + 5) * 3 - 4 * (1.2 * 1.8) \u003d 30.36 square meters. m.
2. Area of window openings B2 = 4 * 1.2 * 108 = 8.64 m²
3. Floor area S3 and ceiling S4 are identical = 40 sq. m.
4. Square internal walls is not taken into account in the calculation, since there is no heat loss.
5. Heat transfer resistance for brick wall: R = 50 / 0.592 = 84.46 m²*°C ⁄ W.
6. Thermal loss for each surface:
- Q walls \u003d 30.36 * 84.46 \u003d 2564.2 W
- Q windows = 8.64 * 135 = 1166.4 W
- Q floor = 40 * 26 = 1040 W
- Ceiling Q=40*35=1400W
- Q common = 6170.6 W
Thus, the daily total heat loss of 1 room is 6.17 kW in the coldest weather. Of course, the higher the outside temperature, the less loss. If we assume that the figure obtained is identical for the remaining area of the house, then the approximate power of the electric boiler in terms of the volume of the room is 12.3 kW.
What other factors influence the choice?
Experts recommend adjusting the calculation of the boiler for heating according to the level of heat loss by the amount of power reserve - 15-30%. The fact is that significant heat leakage occurs through ventilation, especially forced ventilation. Also possible are power surges in electrical units, pressure drops of water and gas in the lines for boilers, insufficient or excessive air supply to maintain combustion in solid fuel devices.
Conscientious system installers always warn - the nominal power is indicated in the boiler passport. This value sometimes differs significantly from the useful (actual) power. The fact is that rarely any boilers (except for condensing ones) have an efficiency of more than 95%. Gas and solid or liquid fuel units lose up to 20% during operation - they simply “fly away” into the hood or chimney. Let's explain with an example:
- Since the ventilation is forced, the required power is: 12.3 + 20% = 14.76 kW.
- Boiler DAKON RTE-M 16: maximum power consumption - 16.6, efficiency = 99.1%.
- That is, 16.6 - (100 - 99.1)% \u003d 16.45 kW. Such a boiler will provide heating in in full, without reaching the limit indicators in work, and will last for a long time.
- If it is chosen gas Ariston CLAS SYSTEM 15 CF 16.5 kW with efficiency = 91.2%, then: 16.5 - (100 - 91.2)% = 15.04.
- Due to the hood, up to 20% is lost: 15.04 - 20% \u003d 12.03 kW.
Obviously, this model will not "pull" our room.
Knowing the calculated power, it is easy to choose a boiler for double-circuit system- the passport always indicates the planned indicators for each of the circuits. For solid fuel boilers high power you can purchase a heat accumulator that will perfectly store the excess heat generated. In this way, an optimal result is achieved: a sufficient level of heating and minimization of costs.
Articles
Calculation of the heating boiler power, in particular gas boiler, it is necessary not only to select boiler and heating equipment, but also to ensure the comfortable functioning of the heating system as a whole and eliminate unnecessary operating costs.
From the point of view of physics, only four parameters are involved in the calculation of thermal power: the air temperature outside, the required temperature inside, the total volume of the premises and the degree of thermal insulation of the house, on which heat losses depend. But in fact, everything is not so simple. The outdoor temperature varies with the seasons, the indoor temperature requirements are determined by the mode of living, the total volume of the premises must first be calculated, and the heat loss depends on the materials and construction of the house, as well as the size, number and quality of windows.
Calculator of gas boiler power and gas consumption for the year
The calculator presented here for the power of a gas boiler and gas consumption for a year can greatly facilitate your task of choosing a gas boiler - just select the appropriate field values and you will get the required values.
Please note that the calculator calculates not only the optimal power of a gas boiler for heating a house, but also the average annual gas consumption. That is why the “number of residents” parameter was introduced into the calculator. It is necessary in order to take into account the average gas consumption for cooking and obtaining hot water for domestic needs.
This setting is only relevant if the cooker and water heater you also use gas. If you use other appliances for this, for example, electrical ones, or even don’t cook at home and do without hot water, put zero in the “number of residents” field.
The following information was used in the calculation:
- duration heating season- 5256 h;
- duration of temporary residence (summer and weekends 130 days) - 3120 hours;
- the average temperature for the heating period is minus 2.2°C;
- the air temperature of the coldest five-day period in St. Petersburg is minus 26°C;
- soil temperature under the house during the heating period - 5 ° C;
- reduced room temperature in the absence of a person - 8.0 ° C;
- warming attic floor- a layer of mineral wool with a density of 50 kg / m³ and a thickness of 200 mm.
In the process of planning a heating system for a house, cottage or production premises a completely logical question arises: how to choose a boiler by area? To do this correctly, you need to consider the following:
- If the house is insulated in accordance with all standards and requirements and has ceilings up to 3 m, then the approximate power of the boiler is determined at the rate of 1 kW per 10 m² of the area to be heated.
- If the house is poorly insulated, or glazed verandas, uninsulated attics, etc. act as heated rooms, then the boiler power should be even greater.
- If the boiler is used not only for heating, but also for hot water supply, then the required power increases by 20-50%.
The layman can determine desired power boiler only approximately, because in more complex formula several other indicators are included (wall thickness, number, type and size of windows, etc.). The final calculation should be done by a professional who is able to correctly select the boiler by area. (See also: )
Formula for calculating boiler power
Why is the conversation primarily about the power of the heating boiler? Simply because it is practically the main parameter of his work. Moreover, no matter what type of fuel will be used (whether it is a gas boiler, liquid fuel, solid fuel or electric), it is by power that it is determined whether it is suitable for heating and hot water supply of your home. Will comfort be maintained in all rooms? temperature regime in winter season or in the spring-autumn cool period. If the power is too high, the boiler will not be able to reach the optimal operating mode for itself and you will simply have to overpay for excess fuel / energy for it.
Consider the formula that is used when making the selection of the boiler by area.
The parameters that determine thermal power, are:
- the area of the room that is planned to be heated (S);
- specific boiler output per 10 m² of heated space, already approx. different regions taking into account climatic conditions each (Wud.). For Moscow and Moscow region Wud. = 1.5 kW. For areas of the North Wud. = 1.5 to 2.0 kW. For areas of the South Wud. = 0.7 to 0.9 kW.
So you can solve the problem with how to choose a boiler by area. This formula is considered simplified version, although, in principle, it shows the correct results. Its main advantage is simplicity. But she also has downsides. It may not be suitable for calculating power in more than difficult cases(for example, as mentioned above, if along with the house it is supposed to heat something else like a large glazed veranda).
Double-circuit boilers for houses up to 200 m²
Gas double-circuit boilers designed to provide both home heating and hot water supply. In the above example, when calculating the power of a boiler for a house of 80m², the result of 9.6kW is only an approximate figure. The table recommends purchasing equipment with a capacity of at least 25 kW for such an area (for example, such as Proterm Gepard boilers). Otherwise, in winter, when it is cold outside to minus 25 ° C and heating system fully loaded, one of your loved ones will not be able to take warm shower while you are washing the dishes, for example.
Therefore, if, according to your calculations, it is necessary to purchase a boiler, for example, with a power of 14 kW, and in stores and on the market you see only boilers for which this indicator starts with the number 18, take a more powerful one (an order of magnitude, no more), and don’t even hesitate . Automation (after all, almost all brands of modern boilers are equipped with it) will adapt itself to the needs of the room. Remember only that the power reserve should not be more than 25%.
Designed for use in private residential buildings, apartments and cottages, Proterm Gepard boilers are very easy to maintain, equipped with a display that shows all the information about the operation of the boiler in this moment. Some models can be installed in rooms where there is no chimney at all. All this allows us to classify them as heating equipment of increased comfort.
Double-circuit boilers for houses up to 300 m²
It perfectly withstands not only temperature fluctuations on the street, but also power surges, which is also typical for Russia. The sudden drop in water or gas pressure is also not terrible for him. Such a boiler works without breakdowns and failures for a very long time thanks to high quality all accessories. In addition, it has a very pleasant price, so the Navien mounted boiler is one of the best options for country cottages.
Heating boilers for rooms up to 1 thousand m²
For heating large buildings, solid fuel boilers with mechanical furnaces and a control cabinet are often used. They heat up the room very quickly, which is important. If there is a sudden power failure or the water temperature and pressure deviate from allowable norms, the safety automatics, which is part of the furnaces, are activated and the fuel supply is stopped. This equipment includes the boiler Bratsk M. It works on sorted brown and hard coal. The size of the pieces should not exceed 100 mm. Cast iron sections the boiler must be installed on a brick base. One of the undoubted advantages in the convenience of its maintenance is that during possible emergencies, after the fuel supply is turned off, the alarm automatically turns on. All this makes the Bratsk M boiler convenient and safe to use.
Efficiency of heating boilers
What is boiler efficiency? This is the difference between the amount of heat in the fuel and the amount of heat that was transferred to the water (coolant). The formula with which you can calculate the efficiency of the boiler looks like this: efficiency = 100 - q2 - q3 - q4 -q5 - q6 (q values \u200b\u200bare heat losses).
Before calculating the efficiency, it is necessary to measure the temperature of the flue gas with a special thermometer on the flue of the boiler. Divide the value obtained by 15, add 2, add 3, add 2. All these figures are indicative and indicate the same heat losses.
Example: outlet gas temperature - 330°C
330/15 + 2 + 3 + 2 = 29 %
Total: boiler efficiency is 71%
Of course, in order to determine the efficiency of the heater, first of all, the efficiency of the boiler is calculated. But this coefficient is not considered decisive in assessing the operation of the entire system.
In spite of a large number of options for heating private houses, many people prefer a proven option - gas or solid fuel boilers. Such a unit is reliable and durable, does not need complex maintenance. In addition, the variety of models makes it possible to accurately select a device for specific premises. Power is the main characteristic heating appliances. It is on how correctly the device is chosen that the comfort of the home microclimate, efficiency, safety of the boiler, and its working life depend. In this article, we will consider how to choose a boiler for heating a private house in terms of power, what factors must also be taken into account.
Why is accurate power calculation necessary?
The choice of a boiler is based on accurate calculations, allowing you to have an idea of the real heat loss of a private house:
- The purchase of a device with an excess resource leads to unjustified fuel consumption.
- A low-power unit will not be able to heat the living space with high quality. In addition, working at the limit of its capabilities, it will quickly fail.
Important! How to choose a boiler according to the area of \u200b\u200bthe house in a simple way? The simplest boiler calculation is 1 kW of power per 10 “squares” of housing, plus a margin of 15-20%. For example, to heat a house of 100 m², you need a 12,000 W boiler. This calculation is very enlarged and approximate. It can only be used for buildings with good thermal insulation, with low ceilings and for regions with a mild climate. Naturally, not all private houses meet these requirements.
Initial data for calculation
For a house made according to a standard project, with ceilings 3.0 m high, calculate required power heating device not difficult. Consider how a gas boiler is selected for a private house by area. The calculation is based on 2 parameters:
- The total area of the house.
- Boiler specific power (UMK). This indicator varies for different climatic zones.
The value of the UMC is:
- For the southern regions - 0.7-0.9 kW.
- For middle lane- 1.0-1.2 kW.
- For the northern regions - 1.5-2.0 kW.
The formula for the calculation will look like this: M \u003d S x UMK / 10, where
- M - boiler power, kW.
- S is the area of the house,
- UMK - specific power of the boiler.
Important! For example:
- The value of the desired indicator for a house with an area of 100 m², located in the southern region, is: M \u003d 100 x 0.9 / 10 \u003d 9 kW.
- For the same building northern regions the same indicator for a heating boiler will be: M = 100 x 2/10 = 20 kW.
As you can see, the difference is more than doubled. If you want to install a two-circuit unit, increase the figure obtained during the calculation by 20%.
Accounting for heat loss
Even the above calculation is not accurate. For right choice heating device, you need to have information about real heat losses. One house is well insulated, and the other has old frames of dried wood and walls one brick thick. Heat losses in these buildings, of course, will be different.
Important! According to experts:
- The largest heat leakage (about 35%) falls on insufficiently insulated walls.
- Approximately a quarter of heat loss occurs on an uninsulated or poorly insulated roof.
- Insufficiently thought-out floor insulation is the cause of about 15% of heat leakage.
- Only 10-15% of heat leakage comes from ventilation and open windows.
As you can see, the simplest formula for accurate calculation clearly not enough. In each case, the calculation of power will be individual.
Accounting for the dissipation factor
This ratio is one of the most important indicators heat exchange between the room and external environment. When calculating, the following values of this coefficient are taken as a basis:
- 3.0-4.0 - for buildings in which there is no thermal insulation. Most often these are temporary buildings made of wood and metal.
- 2.9-2.0 - for buildings with minimal thermal insulation. This refers to thin-walled houses with non-insulated walls, the simplest design roofs and wooden frames.
- 1.9-1.0. This value of the dispersion coefficient corresponds to the average level of insulation ( brick house with insulated or double walls, with insulated roof and attic space, with double glazing).
- 0.6-0.9. This coefficient applies to houses built using modern technologies and materials. They are characterized by well thought out ventilation system, insulated floor and roof, installed windows with good thermal insulation.
Important! The most accurate formula for calculating possible heat losses: Qt \u003d V * Pt * k / 860, where
- Qt - possible heat losses;
- V is the volume of the room.
- Ht is the difference between the desired indoor temperature and the minimum outside air temperature characteristic of these latitudes;
- k is the scattering coefficient.
We calculate the heat loss for a house of 100 "squares" with ceilings 3 m high, an average level of thermal insulation:
- The desired room temperature is +20 degrees.
- The minimum air temperature for this region is the same 20 degrees, but with a minus sign.
- Qt \u003d 300 x 40 x 1.9 / 860 \u003d 26.5 kW.
- Taking into account the margin, we multiply the resulting figure by 20%: 26.5 x 1.2 \u003d 31.8 kW.
- Rounding the resulting figure to the nearest whole number, we get a power of 32 kW.
This calculation allows you to choose a boiler unit with a sufficiently high accuracy, taking into account the climate in the region and the characteristics of the structure.
Special calculation programs
You can use various programs and online calculators to calculate. The advantage of such programs is that a large number of different factors are taken into account:
- Desired room temperature.
- Average temperature during the cold season.
- The need for hot water.
- Number of floors.
- The presence or absence of a forced ventilation system.
- Ceiling height.
- Wall thickness, floor characteristics.
- The number of windows, their dimensions and characteristics (number of chambers, glass thickness).
By filling out the form fields, you will receive exact value initial power, and then choose the device according to its characteristics.
