PPT Slide

Compressibility Factor-A measure of deviation from the ideal gas

Z: compressibility factor, Z=1, ideal gas

Pr=P/Pcr

Tr=T/Tcr

Example: steam T=310° C, P=10 MPa, Tcr=647.4K, Pcr=22.1 Mpa

Tr=0.9, Pr=0.45, Z=0.75, different from ideal gas

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