Thermotechnical calculation. Why it is needed by the owner of the cottage

It can be unequivocally said that a full heat engineering calculation is a matter for specialists. But if desired, it can be understood by any man with his head on his shoulders, who is friends with mathematics and physics. For calculations it is necessary to know some initial parameters - the volume of the room, which is now being explored; The desired temperature to be observed inside the building, and the lowest temperature on the street in this region. In addition, specific knowledge - thermal characteristics, which are taken from professional reference books, correction factors, formulas, will be required.

There are two main reasons for making a heat engineering calculation. First, such a calculation is required when designing and installing a heating system for a cottage. In this case, the obtained data will help to choose a heating boiler of the right capacity, which, on the one hand, will not make the residents of the house freeze, and on the other, will not have excessive power. Need I recall that the excessive capacity of the boiler means not only overpayment with its purchase, but also more expensive operation?

The second reason is the need to establish why the house is cold, despite the fact that the heating system is operating at full capacity. In other words, the heat engineering calculation of the external walls and the further thermo-technical inspection of the house is done to establish a possible source of heat losses . This service is called energy audit and is conducted by power engineers with special equipment. On the device, which is called a thermal imager, it is visually visible where exactly this structure has losses, where radiation comes from. On the thermal imager's screen, individual structural elements are painted in different colors. And the colder the color, the less energy is emitted into the environment.

Further thermo-technical calculation of the wall, which does the worst job of "thermos", can show what works need to be done to bring its heat engineering indicators to the desired level. As a rule, we are talking about additional insulation - internal or external, about replacing obsolete elements (for example, old wooden window frames on plastic double-glazed windows with better thermal insulation characteristics). After carrying out these works, a second examination is carried out to confirm that the expected result has been achieved.

In the first variant, the heat engineering calculation is done by specialists even at the design stage of the house. And the customer often does not even go into details, how and by whom he is done. The future owner gets on hand the finished documentation on which the house is built, and the house is comfortable and comfortable.

In the second variant, the customer has to look for narrow specialists who will provide energy audit services and help reduce the operating costs for heating. In this case, it is also sufficient for the customer to have only a general idea of the essence of the work, in order to properly formulate the task to the performer.