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Selection Of Air Filter In Colleges And Universities

1. The High efficiency air filter selects the main control parameter filtration efficiency, the rated air quantity, the initial resistance of the rated air volume, the volume dust quantity and so on.

2. According to the GB/T6165-1985 "High efficiency air filter performance test method through the rate and resistance," the method of testing, the filter of its transmittance ≤ 0.1% (i.e. efficiency ≥ 99.9%) or the counting transmittance of the particle size ≥ 0.1 μ m particles ≤ 0.001% (i.e. efficiency ≥ 99.999%) is an efficient air filter.

3. High efficiency air filter commonly used filter material has ultra-fine glass fiber.

4. Air filters should conform to the fire protection requirements, high-efficiency air filter According to the degree of fire resistance is divided into three levels: 1-level filter, filter all materials are non-flammable, non-combustible material should conform to the GB8624-1997 a level. 2-level filter, filter material should be compatible with GB8624-1997 A-level non-combustible material, the separator plate, the framework can be compatible with GB8624-1997 B2 level of combustible materials. 3-level filter, filter all materials available to meet GB8624-1997 B3 level

5. Design, the initial resistance can be two times as the final resistance, as the filter calculation resistance.

6. High Efficiency air filter the initial resistance must not exceed the product sample resistance 10%.

7. Efficient air filter is not suitable for use alone, high efficiency air filter should be set at the end of purifying air-conditioning system.

8. Dust volume manufacturers should provide. High efficiency filters should be leak-out. Other requirements are determined according to user requirements.

9. In general non-parallel flow clean air-conditioning system adopts a combination of filter tuyere.

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