A piston-cylinder device contains 5kg of steam at 100kPa, quality of 50%. This steam undergoes two processes as follows: (Process1-2) Heat is transferred to the steam in a reversible manner while the pressure is held constant until the steam exits as a saturated vapor. (Process 2-3) The steam is compressed in an adiabatic, reversible process until the pressure is 500kPa.
(a) Sketch these processes with respect to the saturation lines on a single T-s diagram.
(b) Determine the heat added to the steam in the entire process 1-3, in kJ.
(c) Determine the net work done by the steam in the entire process 1-3, in kJ.
(It's a reversible adiabatic process, this is not a cycle)© BrainMass Inc. brainmass.com March 4, 2021, 7:31 pm ad1c9bdddf
Thermodynamic State 1 of Steam
Pressure = 100 K Pa
Quality of steam x= 0.5
Corresponding to these conditions the steam properties (from steam tables) are
Property Saturated . Liquid Saturated Va[por Mixture
Temperature, C 99.61 99.61 99.61
Enthalppy, KJ/Kg 417.4 2674.9 1546.15
Entropy, KJ/Kg-K 1.3 7.36 4.33
Specific Volume, M3/Kg 0.001043 1.6949 0.8479
Properties at the ...
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