First of all, there is a concept to be clear: if the static pressure value of the new fan is not high, the pipeline is very long, the installation is not standardized, and the planning is unreasonable if the pipe diameter is changed. Even for a new fan with an air volume of 2000, the actual air volume at the outlet may be only a little. It is entirely possible to lose more than 50%.

Of course, under the actual installation conditions, the loss is inevitable, just a matter of more or less.

Therefore, we usually calculate the static pressure value and pipeline specification according to the data of pipeline planning. At the same time, the air loss should be calculated.

If the static pressure of the conventional machine is between 60 and 90 Pa, if it is a home, we recommend the following configuration: for reference.

For flat-floor apartments within 80 square meters, choose 150 cubic meters of machines.

80- 120 square meters, choose 250 cubic meters.

120- 160 square meters, choose 350 cubic meters.

Rooms with different functions have different air changes, so we can't generalize them. If a family of four needs a new house. The number of air changes should be greater than 0.5 times, and the minimum fresh air volume should be greater than 120 cubic meters. Based on this, we can calculate:

CMH is approximately equal to cubic meters.

1, 200m2 room * 2.7m height = 540m3 (total housing capacity)

2540 cubic meters *0.5 times =270 cubic meters (standard calculation is 0.5 times of ventilation per hour)

3, 4 people *30 cubic meters = 120 cubic meters (30 cubic meters per person per hour)

Obviously, the maximum value of 270 cubic meters can meet the demand of 0.5 times ventilation and meet the demand of 30 cubic meters per capita.

The above is a simulation formula. In fact, different brands of new fans have different real static pressures, which determines different air consumption.