Calculation of heating radiators of a private house: what

Warming and heating of your own home always has one of the primary values ​​in a person’s life, especially if he lives in cold regions, therefore, you can use the calculator for calculating the radiators of a private house or do such calculations yourself, which will be more accurate.

But it will not be enough to calculate how many sections you need for a particular room, you will also have to take care of the maximum heat transfer from the devices, which is connected with their connection and type of circuit, as well as the correct location of the devices, which is also of great importance for creating a microclimate.

Of course, there are many requirements, but they are not all that complicated as it may seem at first glance, which we will tell you now, and we will also demonstrate on the topic of the video in this article.

How to calculate radiator power

There are quite complex calculations that are used in the design of residential and public buildings, which take into account a lot of different nuances, which, perhaps, can be known only to designers.

We offer you a simpler way of calculation, in which small errors are possible, but, nevertheless, this method works and has not failed anyone.

What are radiators

• Bimetallic heating radiators today it is possible to call the most demanded not only for autonomous, but also for centralized systems - despite the fact that their price is higher than that of cast iron, tenants install them instead of cast iron in their apartments in private. Such popularity is not in vain - the device is made of two metals - on the inside there is steel, which can withstand almost any pressure possible in the heating circuit, even in multi-storey buildings, and on top there is aluminum, which has a very high thermal conductivity. As a rule, such batteries are of sectional type, and the size of one device will depend on the power required for heating a specific room.

Parameter table from some manufacturers on bimetallic radiators

• The most budget can be called steel panel heaters., where there is a very high heat transfer, which is acquired due to the distance between the axes and the U-shaped plates located on the pipes, where the coolant circulates. They can be one, two or three each, from which, quite naturally, the power of the device increases with the same amount of water circulating in it.
• Such structures are strong enough and withstand high pressure, but their main problem lies in their susceptibility to corrosion. and this is probably the main reason why the instruction does not recommend using them in centralized heating - during the descent of water oxygen enters the tank, which causes a reaction and the device will rust. Also, steel radiators are used as towel warmers, but as batteries they are made only on an individual order, as galvanized or stainless steel is needed here, and this is very expensive.

• Aluminum radiators have the greatest heat dissipation., which can be made, both sectional and panel, and they are made either by injection or extrusion (the second method is somewhat cheaper, but here the weak point is glued or welded joint). Of course, heating devices made from such a metal are very expensive, but, as you understand, they pay for quality and, moreover, a lot of money, but they can only be used for autonomous systems. The fact is that the coolant circulating in such devices should be antifreeze with special additives that resist corrosion and scaling, and this is possible only in autonomous circuits.

• And, of course, it is painfully familiar to all cast iron batteries., as in the photo above, which are mounted in the vast majority of apartments in multi-storey buildings and are installed in the new buildings to this day, and they have established themselves very well. The main drawbacks of such devices include the large capacity of the sections (you need to heat a lot of water) and thick walls that heat up for a long time, but also cool down for a long time. But centralized heating systems cope excellently with such shortcomings - the volume there means little against the general background, but slow cooling is very convenient, since it is connected with periodic circulation cycles - when the system is not working, heat is stored (for autonomous circuits such radiators will be expensive to operate) .

Calculate the power

Note. It should be noted that the most effective place for placing a radiator is under the window. Warm air from the device, rising up, forms a barrier to cold streams that move from the glass.

As we have already said, we will not have to deal with complex calculations, as it is possible to calculate heating radiators for a private house in a simpler way and even if this is not entirely accurate, however, this is effective and most plumbers do just that without starting the system into operation no complaints.

But there are two ways of calculating - in terms of area and volume of the room - the first option is possible only if the ceiling height does not exceed 270 cm, but if this figure turns out to be more, then in such cases the power is calculated from the norm per cubic meter.

Note! For Moscow and the Moscow region per square meter of space, 100 watts of thermal energy are needed, and if calculated by volume, then 41 watts are needed per m 3.

Let's learn how to calculate the number of radiators in a private house by area (ceilings not higher than 270 cm) and for this we will use the formula K number of sections = S * 100 / P, where S is the size of our room, and P is thermal power of one section. For example, let's take a small room of 34m, which means we have S = 12m2, and for the unit we take the Grandini section of a 130W radiator.

In this case, if we have such data, then we will substitute them into the formula, then K number of sections = S * 100 / P = 12 * 100/130 = 9.23. But, as a rule, rounding is done in a big way, which means that for a room of 12m2 you need a radiator from 10 sections, if it is Grandini 350 (for other devices, see the power value in the table).

For those cases, if the ceiling, for example, has 3m, another formula is suitable - V * 41 / P and we take a room with the same area, then K number of sections = V * 41 / P = 4 * 3 * 3 * 41/130 = 11.35 or 12 sections of a similar radiator.

Conclusion

It should be noted that you can make calculations with your own hands for any radiators, and the metal does not matter here - the power of the section or panel is in any case indicated by the manufacturer. Only panel devices you need to count not in sections, but in pieces, using similar formulas, where P will be equal to the power of one panel heater.