Repeat the calculations of Problem 6.13 if the mechanical efficiency of the adiabatic turbine is only 85
Question:
Repeat the calculations of Problem 6.13 if the mechanical efficiency of the adiabatic turbine is only 85 percent.
Problem 6.13
Eighteen kilograms of the refrigerant HFC-134a at 150°C is contained in a 0.03-m3 tank. Compare the prediction you can make for the pressure in the tank with that obtained using Fig. 3.3-4. For data, see Table 6.6-1.
Fig. 3.3-4.
Table 6.6-1.
Transcribed Image Text:
Pressure (MPa) 100 20. 10. 8. 6. 4. N 2. 1. 0.8 0.6 0.4 0.2 0.1 0.08 0.06 0.04 0.02 0.01 100 150 QUPORD Pressure - Enthalpy Diagram SUVA HFC-134a (SI Units) 0.65 0.70 0.75 0.00070 -30 temperature -20°C -0.80- -0.85- 0.90- 150 200 960- 250 1.00- 1.05- 1.10- 1.15- 1.20: 200 1885 300 1.35. 1.30 21.25. 250 0.0009 temperature 0°C 1764 20 300 350 0.001 350 400 0.001 0.0013 (0.0012, -0.0014 450 400 450 8888888 Enthalpy (kJ/kg) 0.0016 0.0018 80 500 சம் 100 1104 120+ 500 0.0020 550 FOEK HEREN 140 160 335 41503 NUKITS $65 0/1 EN RECE 550 1801 600 0.0030 volume-0.0040 m²/kg 061 200 temperature 220° BEHI SE 650 0.0060 - 50 600 0.0080 0.010 0.015 0.020 0.030 0.040 0.060 ++ 0.080 0.10 0.15 0.20 0.30 0.40 HIH 0.60 0.80 1.0 O... 1.5 2.0 650 700 200. 100. 80. 60. 40. 8 20. 10. 8. 6. ✔ 2. 1. 0.8 CO CO 0.6 0.4 0.2 0.1 700 Pressure (bar)
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Related Book For
Chemical Biochemical And Engineering Thermodynamics
ISBN: 9780470504796
5th Edition
Authors: Stanley I. Sandler
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