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A steam turbine is used to drive an R134a compressor and a generator at steady conditions, as shown in Figure. The steam enters the
A steam turbine is used to drive an R134a compressor and a generator at steady conditions, as shown in Figure. The steam enters the turbine at P1 = 4.X MPa, T, = 35XC, mstm = 0.125 kg/s and exits at P2 = 20 kPa with a quality x2 = 0.95. The R134a enters the compressor at P3= 100 kPa, T3 = 20C, mg = 0.25 kg/s. After leaving the compressor at T, = 150C, the R134a passes through an aftercooler and emerges at Ps = 2.0 MPa and Ts-80C. Assume that the compressor and turbine both operate adiabatically and neglect pressure losses in the aftercooler. a) Determine the power delivered to the compressor. b) Determine the power provided to the generator. c) Determine the rate of heat transfer from the aftercooler. d) Draw the P-v or T-v diagram for R134a only. However, for point 4 of the report inlet conditions of steam are to be changed. 1. The program code. 2. P-v plots with clear labeling of states. Refer to the question for additional details. 3. Table of parameters computed. 4. Also, generate a solution to investigate the effects of inlet conditions on the solution of the given problem. For instance, utilize five different values for each pressure if the last digit of your registration number is odd. Additionally, examine the impact of the inlet mass flow rate on the solution. Present each effect in the form of graphs. Refer to the question for additional details. 5. Discussion of the results to describe the graphical effect (step number 4) with physical significance. 6. Compare your EES solution with analytical solution and compute the error. P = 2 MPa T5 = 80C www aftercooler compressor 4 T = 150C R134a P=100 kPa T = 20C m = 0.25 kg/s steam P = 4.X MPa T = 35X C mstm = 0.125 kg/s turbine generator P = 20 kPa *=0.95 generated power
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