thanks Zekeman for the response, however like iainuts says the air is no longer ideal at that pressure. I have a calculator that calculates the properties of air at high pressures. But what really happens in this vessel is after 6 seconds, 10 lbm is removed. This process happens 5 times total...
thank you very much iainuts for replying. I tried to model heat transfer into the equation originally by m1u1-m2u2=dmhe+Q. I found that the heat added was small, but maybe because is was modeling it as conduction through the vessel wall with outside and inside convection, I cant remember...
I am trying to determine the temperature in a high pressure air vessel after it has blown down to 30 seconds. Starting pressure is 5000 psig 80 deg F. I have used the first law: m1u2-m2u2=dmhe and determined a temperature after being -56 deg F. The first law states it is isentropic. However...
