Air purifier air volume: bigger is not better.Car Air purifier

　　Like the CADR value of an air purifier, the fresh air volume is one of the core indicators of fresh air products, and it is a key factor in measuring the applicable area of a fresh air fan. Many users are also blindly pursuing "bigger is better" for the fresh air volume of new fans, but this is not the case.

　　my country's "Code for Design of Heating Ventilation and Air Conditioning for Civil Buildings" clearly stipulates the fresh air volume required for rooms of different sizes: when the per capita living area FP is less than or equal to 10 square meters, 0.7 air changes per hour should be guaranteed. Of course, we can also approximate it, each person needs about 30m3 of fresh air per hour to breathe, that is to say, the fresh air volume of a single bedroom needs to be at least 30m3/h, and so on, the area is larger and can accommodate more people The living room needs a fresh air volume of 150-200m3/h.

　　So why is the fresh air volume not the bigger the better? There are two main reasons. The first is to avoid wasting energy. After all, larger fresh air volume will bring higher energy consumption; For users, too much fresh air volume may affect the balance of indoor temperature and humidity. Therefore, when we choose such products, we need to choose the fresh air volume of the product according to the area used by us.

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