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Pressure difference control between different rooms in a clean workshop

Aug 09, 2018

In order to maintain the flow of air between different rooms in a clean workshop, a pressure difference is often made between adjacent rooms, which ensures the flow of air from a high pressure room to a low pressure room. Of course, the pressure difference between adjacent rooms is not set at random, it is determined according to the size of the room, the wind speed, the air cleanliness and so on. Generally, it should not be less than 5Pa.

 

In order to maintain the flow of air between different rooms in a clean workshop, a pressure difference is often made between adjacent rooms, which ensures the flow of air from a high pressure room to a low pressure room. Of course, the pressure difference between adjacent rooms is not set at random, it is determined according to the size of the room, the wind speed, the air cleanliness and so on. Generally, it should not be less than 5Pa.

 

For the air conditioning purification system, the fresh air supply channel will cause resistance changes due to filter dust accumulation, thus affecting air volume. Air exhausting equipment may be open and stopped. Besides, the positive pressure of the room will also be affected by the changes of hot pressing and wind pressure. Therefore, the positive pressure value of the clean workshop needs to be checked regularly, and accordingly, the valve of the new, send, return and exhaust passages should be adjusted accordingly.

 

Usually, this adjustment is phased, and a mechanical device that adjusts the change of mechanical inlet and outlet volume at all times to maintain positive pressure indoors is a residual pressure valve. Usually, the remaining pressure valve is installed in the lower part of the lower side of the cleaning workshop and is equal to the height of the return air inlet.http://www.wxrfcleanroom.com/