Calculate nitrogen leakage rate
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Within 12 hours, the pressure in the nitrogen storage tank decreased from 1.072 Mpa to 1.04 Mpa. The volume of the nitrogen storage tank is 100 m3. To calculate the amount of nitrogen that leaked: (P1 – P2) * 100 = NRT; where N = (P1 – P2) * 100 / RT
This post was last edited by Qingchengjun on 2021-9-26 at 10:44. There was a calculation error; first, it is necessary to introduce the temperatures corresponding to P1 and P2, correct one of them, and then calculate P2’ = P2 * (t1 + 273) / (t2 + 273). The standard pressure corresponds to 0.1 Mpa, and this value needs to be multiplied by x10
I entered the correction formula backwards; it has been corrected now
This post was last edited by HEJIYUER on 2021-10-9 00:36. P/P0=(m/m0) exp K; 1140/1172=（m/m0) exp 1.4. Therefore, m/m0=0.98. When the pressure drops to 1140, the mass inside the tank is 98% of the original value, meaning that 2% of the N2 mass has leaked away.