Fresh air replacement machine is a kind of indoor ventilation equipment that is installed in different occasions.Even if the application area is the same, the selected fresh air gas exchanges are different, and home use and public places are used.It is necessary to adopt different choice standards.
A large amount of air is required to use public places.The number of air changes is usually calculated 3-5 times per hour.Family uses fresh air ventilator.Due to the small number of people, the number of ventilation times is usually calculated as hour.
Before choosing the air volume of the fresh air aircraft, it is necessary to find out the number of air changes.Suppose the area of ??a room is 100 square meters and a height of 2.8 meters.The volume of this house is 280 cubic meters.If we send 280 cubic meters of outdoor fresh air and 280 cubic meters of indoor turbid air per hour, we will say that the number of air changes in this room has reached once.
There are two types of air volume calculation, according to the space calculation of the building space and the top space at the top of the applicable place, respectively.The fresh air required for each hour is 30 cubic meters.The number of air changes in public places usually calculate 3-5 times per hour.For special industries, such as hospital operating rooms, special nursing wards, laboratories, factory workshops, etc., it is necessary to determine the required fresh air in accordance with relevant regulations.
The above is the standard for installing fresh air replacement machines in different environments