Necessary preliminary calculations

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There is a division into ducted and ductless systems. In the first case, air moves through ducts and air ducts, in the second, there is no organized movement of air. In this case, it is necessary to open window transoms and doors. Natural ventilation creates more comfortable conditions for the residents of the house.

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The initial parameter in the calculation is chinese overseas europe data volume of air removed and supplied to the room. There is more than one method, but the most commonly used ones are based on sanitary standards and the area of ​​the room.

According to the requirement of the first, it is necessary to start from the fact that the air requirement in m3/h for one person spending most of the time in the house depends on the purpose of the room:

living room - 40;
bedroom - 20;
kitchen - 60;
bathroom - 25.
Based on the second criterion, we proceed from the following regulatory requirement: 3 m3 of replaced air should be allocated per 1 m² of living space. When calculating the cross-section of air ducts, we are guided by the fact that the optimal air velocity in the central channel is 5 m/sec, and in the side channel - a maximum of 3 m/sec.

You can determine the pipe diameter yourself using the formula:

S = L/3600/v,

where L is the performance measured in m3/h, v is the air speed in m/sec.