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Recent content by k4thomas

  1. k4thomas

    Compressed Air CFM

    The regulator or valve would not be feeding directly into the compartment though, there will be at least 7-10 feet of 1" pipe between the exhaust hole into the compartment and that valve/regulator. Dont know if that changes anything. And is critical flow the same as choked flow? Because from...
  2. k4thomas

    Compressed Air CFM

    Does the outlet pressure have to be 14.696 psi as you recommended though? Is there a way to have an outlet pressure greater than 60 PSI in order to have non critical flow while ensuring an air change every 2 minutes within the 6.5 cubic foot compartment at standard conditions? I'm just trying...
  3. k4thomas

    Compressed Air CFM

    I will look into your suggestion katmar. BigInch, I believe I will have critical flow as I expect the drop in pressure to be greater than 50%. I have found several different variations of the Cv computation formula and was wondering which is best. I found the follow equation from...
  4. k4thomas

    Compressed Air CFM

    I am currently designing a HEPA filtered air system for a beverage filling machine. The goal is to complete an air change every 2 minutes within a 6.5 cubic foot compartment (not sealed and at atmospheric pressure). The SCFM would thus be 3.25 This is to be accomplished using a 1" inner...
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