In the household and industrial purification industry will encounter the fresh air system. Here briefly introduces how to choose the appropriate fresh air system.
When choosing the fresh air system, many people may pay more attention to the purification efficiency and other parameters, while many people may not know about the air volume. So when you make your own choice, you may have to listen to the sales suggestions and choose. 300 is 300. There is no detailed reference scheme. At present, there are two ways to choose the fresh air volume.
1、 Ventilation rate
First of all, we need to know the actual area and storey height of our house. Then the volume of the room can be calculated according to these two parameters. Then multiply by the number of air changes to get the final fresh air volume. Ventilation rate here you can refer to the following different occasions of ventilation rate to calculate.
1. Residential building: 1-1.5 times / hour
2. Gymnasium: 1-2 times / hour
3. Office: 1-3 times / hour
4. Cinema and shopping mall: 1-2 times / hour
5. Computer room: 2-4 times / hour
6. Hotels: 2-3 times / hour
For example, if the building area of a family residence is 100 m2 and the floor height is 2.8 meters, the indoor volume is 100 * 2.8 = 280 m3. According to the calculation of hourly air exchange standard for civil buildings, the total required air volume is 280 * 1.5 = 420 m3.
2、 According to per capita
At present, in addition to the above calculation according to the ventilation rate, it can also be calculated according to the per capita fresh air volume (30 m3 / hour per person). This method can be said to be the simplest. In the selection, according to the number of people in the room, the actual required air volume can be obtained by multiplying the per capita fresh air volume.