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FUNDAMENTALS OF ENERGY BALANCES 89
0.95 1.00 1.05 1.10 1.15 1.20 1.30 1.50 2.00 5.00
0.6
0.5 3.0
1.20
0.90
0.4 1.30 2.8
T = 0.85 r 0.3 Pr 1.15 2.6
1.10
0.2 2.4
0.80
Y
0.1 1.05 2.2
0.70 0.60 function
1.7 1.6 1.5 1.4 Y 1.3 1.2 1.1 1.0 0 5.00 2.0
2.00 1.00 1.8 Reduced pressure, P r compressibility
1.20 1.30 1.50 1.6
1.4 Generalised
1.15
1.10 1.2 3.10.
Figure
1.0
1.05
0.8
0.6
V P r temperature, T r = 1.00 0.4
∂ ∂
P V Reduced
P P c P T c 0.2
Y = − P r = T r =
5 4 3 2 Compressibility function, Y 1 0
