When purchasing a Air purifier filters, two elements need to be considered: the efficiency and resistance of the Humidifier filters manufacturers. An experienced air filter factory will estimate a resistance range based on the air volume for your reference in order to make a preliminary selection of the grade of the Hepa air filter. So is the air volume mentioned here a rated air volume or a standard air volume? What is the difference between the two? What do the results measured at the two air volumes signify?

Rated air volume: refers to the volume flow of air processed by the filter in a unit time stated by the manufacturer, in m³/h, specifically refers to the air volume of the air purification system that the air filter needs to be used with. Efficiency, which characterizes the performance (efficiency and resistance) of the air filter in actual use.

Standard air volume: For particulate matter and microorganism tests, the air volume is calculated based on the actual filter media expansion area of ​​the filter under the standard air speed of 5.33cm/s. For the gaseous pollutant test, it is the calculated air volume based on the actual cross-sectional area of ​​the filter at a wind speed of 1m/s, in m³/h. This is generally in a test environment, such as third-party testing, or filtration efficiency testing on filter paper raw materials.

Some air-conditioning systems have high requirements on pressure loss. If the resistance is too high, the air output will be reduced, which cannot meet the requirements of indoor circulation and purification. This requires us to consider the resistance factor in advance when designing the high-efficiency air filter, design and adjust the size of the filter screen, the pleat distance of the filter paper, the grade and other parameters according to the experience, and try to control the resistance as much as possible while satisfying the customer's filtration efficiency. within the range. Compared with blindly direct production, testing, and then adjusting the loop operation, there will be fewer "detours". If there is a design problem of high efficiency air filter, you can directly communicate with the online engineer of JieAnJu Environmental Technology Co.,Ltd.