A steam power plant operates between a boiler pressure of 7 MPa and a condenser pressure of 0.2 bar. Calculate the maximum cycle efficiency and draw the cycle on the T-s diagram. (Please refer to the attached saturated water/steam tables)

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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[Engineering Thermodynamics]

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3. A steam power plant operates between a boiler pressure of 7 MPa and a condenser pressure
of 0.2 bar. Calculate the maximum cycle efficiency and draw the cycle on the T-s diagram.
(Please refer to the attached saturated water/steam tables)
(5 marks)
4. Ahouse is heated with a heat pump with R134a as the refrigerant in winter. The temperature
of the house interior is to be maintained at 20°C. When this heat pump provides 280 kJ of
heat to the house at 40°C while extracts 200 kJ of heat from the ambient air at -10°C,
calculate the coefficient of performance of this heat pump, and draw the cycle on the T-s
diagram and indicate the shaded area which represents the provided heat.
Transcribed Image Text:3. A steam power plant operates between a boiler pressure of 7 MPa and a condenser pressure of 0.2 bar. Calculate the maximum cycle efficiency and draw the cycle on the T-s diagram. (Please refer to the attached saturated water/steam tables) (5 marks) 4. Ahouse is heated with a heat pump with R134a as the refrigerant in winter. The temperature of the house interior is to be maintained at 20°C. When this heat pump provides 280 kJ of heat to the house at 40°C while extracts 200 kJ of heat from the ambient air at -10°C, calculate the coefficient of performance of this heat pump, and draw the cycle on the T-s diagram and indicate the shaded area which represents the provided heat.
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