Oxygen flows through an adiabatic steady flow compressor as saturated vapor at a rate of 1000 kg/hr. The saturated vapor enters at 2.5 bar and exits at 17.5 bar and 175 K. Calculate the shaft work per unit mass of oxygen and the required power to drive the compressor. Use Appendix A.8 for data.

Data From A.8

JI m/kg m/kg 54.361 0.0001463 0.000766 96.54 0.0007258 0.000780 21.46 0.002335 0.000794 7.219 0.006262 0.01455 0.03012 0.05683 0.09935 0.101325 0.1631 T/ K 60 65 70 75 80 85 90 90.18781 95 100 105 110 115 120 125 130 135 140 psat / MPa 1.749 2.225 2.788 3.448 4.219 154.58 5.043 145 150 0.2540 0.3785 0.5434 0.7556 1.022 1.351 h/ kJ/kg -193.61 242.72 49.11 2.0921 -184.19 238.38 54.19 2.2571 -175.81 234.47 58.66 2.3912 -167.42 230.51 63.09 2.5156 -159.02 226.48 67.45 2.6313 -150.61 222.31 71.69 2.7397 -142.18 217.92 75.75 2.8417 -133.69 213.24 79.55 2.9383 -133.37 213.06 79.69 2.9419 -125.12 208.16 83.04 3.0303 -116.45 202.60 86.16 3.1185 196.48 88.85 3.2033 189.70 91.05 3.2855 182.13 92.72 3.3657 173.66 93.75 3.4444 164.08 94.06 3.5222 153.13 93.47 3.6001 140.39 91.74 3.6791 3.7612 125.17 88.47 106.05 82.83 3.8498 79.23 0.0 72.56 3.9546 32.42 4.2008 hLV / hv / s / SLV/ 1 kJ/kg kJ/kg kJ/(kg K) kJ/(kg. K) kJ/(kg .K) 4.4650 6.5571 3.9729 6.2301 3.6072 5.9985 0.000808 2.892 0.000824 1.329 0.000840 0.681 0.000857 0.380 0.000876 0.228 0.000876 0.224 0.000895 0.145 0.000917 0.09592 0.000940 0.06612 -107.64 0.000966 0.04699 -98.64 0.000994 0.03424 -89.42 0.001027 0.02544 -79.90 0.001064 0.01919 -70.02 0.001108 0.01463 -59.66 0.001161 0.01120 -48.65 0.001230 0.008565-36.70 0.001324 0.006455 -23.22 0.001480 0.004653-6.67 0.002293 0.002293 32.42 3.2930 3.0197 2.7788 2.5638 2.3693 2.3624 2.1912 2.0260 1.8713 1.7245 1.5838 1.4472 1.3126 1.1779 1.0400 0.8941 0.7314 0.5282 0.0 5.8086 5.6510 5.5185 5.4055 5.3076 5.3042 5.2215 5.1445 5.0746 5.0100 4.9495 4.8915 4.8349 4.7780 4.7191 4.6552 4.5812 4.4828 4.2008