Pressurization Rate Orifice Calculation
Pressurization Rate Orifice Calculation
(OP)
Hello, I am trying to calculate a orifice diameter that will keep my pressure change below a certain value. I basically have a 12" x 12" x 12' steel box that requires hole/s so that it may vent below a certain rate during altitude changes. I have looked at various threads but can't seem to find what I need/ understand.
Thx
Thx





RE: Pressurization Rate Orifice Calculation
thread391-101311
RE: Pressurization Rate Orifice Calculation
RE: Pressurization Rate Orifice Calculation
Thx
RE: Pressurization Rate Orifice Calculation
You can approximate the hole size for incompressable flows using the Bernoulli Equation, but working fluid must be "well behaved" and less than 10% of the Mach Number. You can use the thermal tables, as I like to, but this is not a common practice.
There are websites that offer a service. Ever try to Google on "Orifice Computations"?
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada