Calculating Pressure Vs. Time While Filling Tank
Posted: Wed Apr 30, 2014 7:59 pm
I need to generate a graph showing the pressure of a tank vs. time. I will have a large tank pressurized, with air, at P1 connected to a smaller tank with piping of a known area A. The larger tank will be much larger than the smaller tank, therefore, we can assume the large tank will stay at P1. The smaller tank has a volume of Vt
This question is almost identical to this question from the past from Cheresources: http://www.cheresources.com/invision/to ... elstorage/
However, I do not feel like the question was fully answered in that post. The equation that the poster was working with is:
ρair*v*A = [Vt*MWair/(ZRT)]*d(P-P1)/dt
Like the original poster, I am confused on how to calculate the velocity (v) and I understand that it changes as the pressure differential between the two tanks changes.
Additional Assumptions: No temperature change, friction from tubing is negligible.
Thanks so much in advance!
This question is almost identical to this question from the past from Cheresources: http://www.cheresources.com/invision/to ... elstorage/
However, I do not feel like the question was fully answered in that post. The equation that the poster was working with is:
ρair*v*A = [Vt*MWair/(ZRT)]*d(P-P1)/dt
Like the original poster, I am confused on how to calculate the velocity (v) and I understand that it changes as the pressure differential between the two tanks changes.
Additional Assumptions: No temperature change, friction from tubing is negligible.
Thanks so much in advance!