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The layout of HEPA filter shall meet the following requirements:

1, when parallel to the decorative layer or the flow layer is arranged on the air supply surface of the lower part of the plenum, the filter full ratio should not be less than 0.75.

2. When arranged on the side of the plenum, it can be arranged on one side or on the opposite side. The full ratio of the filter on the side should not be less than 0.75, and the air flow in the plenum should be fully mixed.

3. When limited by the height and indoor maintenance is not allowed, the filter can be arranged outside the plenum by the air supply surface with leakage resistance function, but it should be as close to the plenum as possible, and the air flow in the plenum should be fully mixed. The full ratio of clean air should be less than 0.85.

4. For clean areas below grade 100, when the air supply port is centrally arranged, the final stage HEPA filter in the air supply port can be centrally arranged or dispersed, but the flow sharing layer must be set up on the air supply surface.

5. All clean rooms in the hundred-level laminar flow operating room should adopt bilateral lower return air; When the distance between the two sides does not exceed 3m, air return under one side can be used, but four corners or four sides should not be used. Clean corridors and clean corridors can use upturn air.

6. Indoor return air should be used in all the 100-level laminar flow operating rooms, and no residual pressure valve should be set up to return air to the corridor.

7. The upper vent must be set up in the 100-level laminar flow operating room, and the position should be on the top of the patient’s head. The blast speed of the exhaust outlet should not be greater than 2m/s.

 


Post time: Nov-25-2022

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