Calculation of heat loss at home can be enjoyed at a specialized firm.However, it is not cheap, and it would be impossible to check the results.It is quite another thing, if you learn how to analyze the loss of heat in the house alone.Then no one will have to pay, and you will be one hundred percent sure of your calculations.
amount of heat lost by the building of a certain unit of time, and is called the heat loss.The value of this variable.It depends on seasonal temperature and heat-shielding properties enclosing structures (which include walls, windows, floors, etc.).Substantial heat loss occurs because of the drafts - entering into the room air is called scientifically infiltration.A great way to deal with them - the installation of modern double-glazed windows.Calculation of heat loss must consider all these factors.
All construction and finishing materials are distinguished by their characteristics and, therefore, heat engineering qualities.They are often heterogeneous structure consists of several layers, and sometimes has a closed air spaces.Calculate the heat loss of the whole structure can be folded indicators for each of the layers.
main characteristics of the materials in our calculations will measure thermal resistance.That it will show how much heat will lose land enclosing structure (for example, 1 m2) at a certain temperature gradient.
We have the following formula: R = DT / Q
· DT - measure the temperature difference;
· Q - the number of W / m2 heat that loses design;
· R - resistance coefficient of heat transfer.
All these figures are easy to calculate, using the SNIP.They spelled out the information about the majority of traditional building materials.As for the modern designs (insulating glass, plasterboard and others), the required data can be obtained from the manufacturer.
Thus it is possible to do a heat loss calculation for each building envelope.Particular attention should be paid to the outer walls, attic floors, sections of cold basements and unheated floors.Additional heat loss occurs through the doors and windows (especially facing the north and east), as well as the outer gate with no vestibule.
Calculation of heat loss of the building is carried out in respect of the unfavorable period of the year.In other words, whichever it is the frosty and windy week.Summing up thus heat loss, you can determine the required power of heaters in the room required for its comfort heating.These calculations will also help determine the "weak link" in the system of thermal insulation and to take additional measures.
make calculations, and can be general, averages.For example, for the one- and two-storey buildings with a minimum air temperature of -25 ° C of heat per square meter will require 213 watts.For buildings with high-quality modern insulation, this figure drops to 173 watts, and sometimes less.
Based on the foregoing, we can say that to save on high-quality thermal insulation should not be.With the continuous increase of energy prices literate insulation and ventilation designs lead to significant benefits.
