How to calculate the number of radiator sections. How to calculate the number of radiator sections per room

Every home owner with a heating systemfaces important issues. What kind of radiator to choose? How to calculate the number of radiator sections? If the house is built for you by professional staff, they will help to properly perform the calculations, so that the distribution of heating batteries in the building was rational. However, this procedure can be carried out independently. The formulas necessary for this are found in the article below.

Types of radiators

To date, there are such kinds of batteriesfor heating: bimetallic, steel, aluminum and cast iron. Also radiators are divided into panel, sectional, convector, tubular, and also design radiators. Their choice depends on the coolant, the technical capabilities of the heating system and the financial capacity of the owner of the house. How to calculate the number of radiator sections per room? This does not depend on the type of heating battery. In this case, only one indicator is taken into account: radiator power.

Methods of calculation

To the heating system in the room workedeffectively and in winter it was warm and comfortable, you need to carefully calculate the number of radiator sections. For this, the following calculation methods are used:

• Standard - is based on the SNIP, according to which the heating 1m² will require a power of 100 watts. The calculation is carried out using the formula: S x 100 / P, where P is the separation power, S is the area of ​​the selected room.
• Approximate - for heating 1,8 m² apartments with ceilings, a height of 2.5 m, you will need one radiator section.
• The volumetric method - the heating power of 41 W is taken to 1 m³. The width, height and length of the room are taken into account.

How many radiators will be needed for the whole house?

How to calculate the number of radiator sections for an apartment or house? A calculation is made for each room separately. According to the standard, the heat output per 1m³ The volume of the room, which has one door, a window and an external wall, is considered to be 41 watts.

If the house or apartment is "cold", with thin walls, have many windows, the attic is not insulated in the house, and the apartment is on the first or last floor, then for their heating it is necessary 47 W per 1 m³, not 41 watts. For a house built of modern materials using different insulants for walls, floors, ceilings, which has metal-plastic windows. you can take 30 watts.

To replace the cast-iron radiators, there isthe simplest method of calculation: you need to multiply their number by 150 W, the resulting number - the power of new devices. Buying aluminum or bimetal batteries for replacement, the calculation is carried out in the ratio: one edge of cast iron to one aluminum.

Rules for calculating the number of branches

How to calculate the number of radiator sections per room? To do this, you must follow the following rules:

• Increasing the power of the radiator occurs: if the room is face-to-face and has one window - by 20%; with two windows - by 30%; windows facing north also require an increase of 10%; installation of battery under the window - 5%; closing of the heating device with a decorative screen - by 15%.
• The power needed for heating can be calculated by multiplying the size of the room area (in m²) per 100 watts.

Tips for installing radiators

In the passport for products the manufacturer designatesSpecific power, which makes it possible to calculate the proper number of sections. Do not forget that the heat transfer affects the power of a separate section, and not the size of the radiator. Therefore, placing and setting in the room of several small devices is more effective than setting one large. The incoming heat from different sides will warm it evenly.

Calculation of the number of branches of bimetallic batteries

How to reliably calculate the number of bimetallic radiator sections per room? To do this, you need the following input data:

• Dimensions of the room and the number of windows in it.
• The location of a certain room.
• The presence of unclosed openings, arches and doors.
• The heat output of each section, indicated by the manufacturer in the passport.

Stages of calculations

How to calculate the number of radiator sections, ifall the necessary data recorded? To do this, determine the area, calculating in meters the width and height of the room. Using the formula S = L × W, calculate the joint area of ​​adjacent rooms if they have unclosed openings or arches.

Next, calculate the total thermal power of the batteries (P = S × 100), applying a power of 100 W for heating one m². Then, the correct number of sections (n ​​= P / Pc) is calculated by dividing the total heat output by the heat transfer of one section, indicated in the passport.

Depending on the location of the roomthe calculation of the required number of branches of a bimetallic device is made taking into account the correction factors: 1.3 - for angular; use a factor of 1.1 - for the first and last floors; 1,2 - used for two windows; 1,5 - three or more windows.

Example:

Calculation of battery sections in the end room, located on the first floor of the house and having 2 windows. Dimensions of the room 5 x 5 m. Heat transfer of one section 190 W.

• Calculate the area of ​​the room: S = 5 x 5 = 25 m².
• We calculate the thermal power in general: P = 25 x 100 = 2500 W.
• We calculate the necessary sections: n = 2500/190 = 13.6. We round up, we get 14. We take into account the correction factors n = 14 x 1.3 x 1.2 x 1.1 = 24.024.
• The sections are divided into two batteries and install them under the windows.

We hope that the information stated in the articlewill tell you how to calculate the number of radiator sections for a house. To do this, use the formulas and perform a relatively accurate calculation. It is important to select the correct power for the section that is suitable for your heating system.

If you independently calculate the necessarythe number of batteries for housing you can not afford, it is best to seek help from specialists. They will perform a competent calculation, taking into account all the factors affecting the efficiency of the installed heaters, which will ensure heat in the house during the cold period.