Calculation of the power of an electric heating boiler by area

The winter period is caused not only by changing weather conditions, but also by preparation for the heating season. To maintain a constant temperature, it is necessary to calculate the required power of the electric boiler. The heating system must supply thermal energy according to the heat loss of the building. This also takes into account the possibility of abnormal temperatures in winter.

Boiler heat transfer - why calculations are needed

Calculations of power and heat transfer of an electric boiler are the main characteristics. Incorrect calculations can lead to overpayment for the heating period in case of excess power; a lack of power will lead to interruptions in hot water supply and low room temperature. Before purchasing a heating system, you must first calculate the power of the electric heating boiler by area. Before this, the heat loss of the room must be determined. According to the data obtained, the model of the electric boiler is selected. You can also use an online calculator to calculate the boiler power.

Calculation of power by area - basic formula

To determine the power of the required electrical unit, it is enough to know the area of ​​the heated room. The average statistical calculation for the Russian Federation is that 1 kW is enough to heat 10 square meters. m.These figures are approximate, so the calculation also includes the height of the building’s ceilings and climatic conditions. For the corresponding calculation, coefficients according to regions are used.

Indicators for the middle zone are suitable for buildings with ceilings of 2.5-2.7 m. If the ceiling height is higher, then the real data is divided by the norm, and a correction factor is obtained.

THE NOTE. There are special sites that will make online calculations.

Climatic coefficients for Russian regions:

• 1.5-2.0 for northern regions;
• 1.2-1.5 for Moscow region regions;
• 1.0–1.2 for the middle band;
• 0.7-0.9 for the southern regions.

REFERENCE. For an apartment, the coefficients are slightly different: a heated apartment from above is 0.7, a heated attic is 0.9, and an unheated one is 1.

These calculations are taken into account only if the system is aimed only at maintaining a constant temperature in the structure. If you expect the unit to heat water, you need to add 20–25%. It is also worth taking into account the period of abnormal temperatures in the cold, this plus another 10%.

The power of an electric boiler is calculated using the formula W=S x Wsp/10 m².

Basic moments

Modern heating systems are manufactured not only with adjustable power, but also with the function of simulating power. But professionals insist on purchasing a heating unit with constant power so that there are no failures in the event of a power outage.

REFERENCE. When purchasing, be sure to consult with a specialist; he will answer all questions and give practical advice.

The main indicator of an electric boiler is the thermal indicator; it is on this that the replenishment of heat loss and uninterrupted supply of hot water depends.

Power is calculated according to:

• Heating areas.
• Building materials for walls and ceilings.
• Glazing area.
• Thermal insulation level.
• Number of external walls.
• Insulated or non-insulated attic.
• Type of glazing.
• Ceiling height.

Having made the correct calculation of the power of the heating boiler, it will provide you with body and hot water for the entire winter period. Of course, in this situation it is better to contact specialists in order to avoid overpayments for electricity supply or interruptions in hot water. A professional organization will take care of all the necessary calculations and select a suitable heating system for your home.