Compressed gas

The pressure vessel contains a compressed gas at a temperature t1 = 27°C and a pressure p1 = 4 MPa. How much does its pressure change when we release half the amount of gas and its temperature drops to t2 = 15°C?

Correct result:

p2 =  1.1111 MPa

Solution:

t1=27p1=4 MPa t2=15 V2=2 V1  pVT=konst p1 V1t1=p2 V2t2 p1 V1t1=p2 2 V1t2 p1t1=p2 2t2  p2=t22 t1 p1=152 27 4=109=1.1111 MPa



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