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  1. JAD0630

    HEPA filter resistance and pressure drop

    Gentlemen, We are using HEPA filters because we are trying get 99.9%+ efficiency at .3ug/m^3. The price of ULPA filters is too expensive for this project. To give you a little background of our system, we currently have a lab that is bringing in approximately 1000 CFM. Additionally, the lab...
  2. JAD0630

    HEPA filter resistance and pressure drop

    Thanks, The air handling unit has no other ducts nor VAV boxes. Is there a way to calculate the CFM available without using the pressure drop. I do not have a pressure gauge within the system, nor would it be easy to install in our situation. The resistance and pressure drop of the HEPA filter...
  3. JAD0630

    HEPA filter resistance and pressure drop

    I have a laboratory that is currently bringing in approximately 1000 CFM of air. This air travels through 12" duct and then into a diffuser that is 48" x 24". CFM was calculated at the end of the 12" duct. I am wanting to install a HEPA filter just above the diffuser but do not want to...

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