You can calculate the amount of material required and the pipeline installation scheme manually or using a calculator for calculating a warm, water floor. The power of the system, the number of storeys of the house, the type of room, free space and other data are taken into account.
Before proceeding with the installation work on underfloor heating equipment, experts strongly recommend drawing up a project based on detailed calculations. In this case, calculations can be performed using a conventional electronic calculator or (there is a later in this article).
Warm water floor will make the house cozy at any time of the year
The second option is more convenient, because the calculations are made very accurately - a special computer program instantly calculates all the necessary data. Its work is based on the method of coefficients: reference, ready-made calculations of underfloor heating are taken, which change depending on the amendments made (pipe pitch, type and thickness of a particular screed, etc.).
What you need to consider in the calculations of underfloor heating
When making mathematical calculations, the following criteria must be taken into account:
- space planning;
- design and type of external walls;
- the size of window openings and the type of double-glazed windows;
- the location of the collectors;
- type and location of the warm generator,
- type of flooring.
Installation of a warm floor
In order to determine the future capacity of a warm floor, it is necessary to separately calculate the heat loss in the room, taking into account the total area, the average air temperature in winter, as well as the level of humidity and ventilation. Separately, the presence of secondary sources of heating in the room is taken into account.
Based on all of the above data and taking into account heat loss, pipe calculations are made and the marking of the underfloor heating line is made.
Determination of power
It is power that is one of the main criteria for choosing a suitable underfloor heating system. The indicator directly depends on the type of room, type of heating, as well as on the area of \u200b\u200bthe room. At the same time, only the so-called usable area is taken for calculation - square meters, free from appliances and furniture.
Attention! Underfloor heating can be installed as the main source of heat only if the area to be heated is at least 70% of the area of the entire room.
It is very important to consider the diameter and quality of the pipes.
System load
The degree of load must be calculated taking into account:
- indoor temperature;
- supply and return temperature;
- pipe pitch (0.05-0.35);
- pipe diameter and material (metal-plastic, cross-linked polyethylene, polypropylene, copper);
- type of flooring (laminate on a substrate, tiles, carpet, parquet);
- screed thickness.
Calculation of the length and number of pipes
For the most accurate calculations, you should first draw up a laying scheme, indicating on a piece of paper the location of heavy overall furniture and household appliances.
System installation
In addition, you should consider:
- the total length of the pipe of the 1st circuit should not exceed 100 m;
- with a longer length, a 2-circuit system is equipped;
- in each individual room of one house, the average length of the pipes should be approximately equal - the maximum deviation is 15 m.
The formula for calculating the pipe: L \u003d Ar / a + 2 x Lzu - 2 x Ld (m), where:
L - pipe length, m;
Ar - room area, sq.m.;
a - pipe installation step, m;
Lzu - length of supply/return pipes, m;
Ld - length of heating pipes, m.
Calculator for calculating water, underfloor heating
You can not bother yourself with calculations, but make them using our online calculator.
| Serving temperature, o C. | |
| Return temperature, o C. | |
| Pipe pitch, m | 0.05 0.1 0.15 0.2 0.25 0.3 0.35 |
| Pipe | Pex-Al-Pex 16×2 (Metal-plastic) Pex-Al-Pex 16×2.25 (Metal-plastic) Pex-Al-Pex 20×2 (Metal-plastic) Pex-Al-Pex 20×2.25 (Metal-plastic) Pex 14×2 (Cut-linked) polyethylene) Pex 16×2 (XLPE) Pex 16×2.2 (XLPE) Pex 18×2 (XLPE) Pex 18×2.5 (XLPE) Pex 20×2 (XLPE) PP-R 20×3.4 (Polypropylene) ) PP-R 25×4.2 (Polypropylene) Cu 10×1 (Copper) Cu 12×1 (Copper) Cu 15×1 (Copper) Cu 18×1 (Copper) Cu 22×1 (Copper) |
| Flooring | Tiles Laminate on underlay Parquet on plywood Carpet |
| Screed thickness above the pipe, mm | |
| Specific thermal power, W / m 2 | |
| Floor surface temperature (average), o C | |
| Specific coolant consumption, (l / h) / m 2 | |
Conclusion
Before you start purchasing materials and directly install underfloor heating, you need to carefully make all the calculations manually or using a special calculator. At the same time, the purpose of the system is always taken into account in the first place - as the main or additional source of heat.
Based on the area of \u200b\u200bthe room, humidity, room temperature and other characteristics, the load and required system power, length, step width and pipe diameter are calculated.
Self-calculation of a warm water floor: video
Warm water floor: photo
