temperature s. pressure
Posted by jimbo on April 12, 2004 at 11:45:53:
Did some homework regarding previous discussions on this issue. The formula is called the Combined Gas Law. It is a combination of Boyle's Law and Charles' Law.
P1V1/T1 = P2V2/T2

If we assume constant volume in the pipe, we can leave V out.

Example: Pressure = 15 PSI, temp = 70 degrees. If temp changes to 50, what is the pressure?

15/70 = P / 50

P = (50 X 15)/70

P = 10.7 PSI

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