Description of the selection and layout requirements of air filters of various cleanliness.
1. The air purification treatment with air cleanliness of 100, 10,000 and 100,000 should adopt three-stage filtration of primary, medium and high-efficiency filters. For 300,000-class air purification treatment, sub-high-efficiency filters can be used instead of high-efficiency filters.
2. The selection and arrangement of air filters should meet the following requirements:⑴ Medium-efficiency air filters should be centrally installed in the positive pressure section of purified air conditioning;
⑵ High-efficiency or sub-high-efficiency air filters should be installed at the end of the purified air conditioning system;
⑶ Medium-efficiency and high-efficiency air filters should be selected with less than or equal to the rated air volume.
3. The clean room (area) with large area, high air cleanliness, centralized location and strict requirements for noise reduction and vibration control should adopt a centralized purification air-conditioning system. Conversely, a decentralized purification air-conditioning system can be used.⑶ Clean rooms (zones) with different operating shifts or usage hours.
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