A simple but non-ideal Rankine cycle operates with water as the working fluid and operating between pressure limits of 75 kPa and 10 MPa. Water enters the pump subcooled by 4°C and 3200 kJ/kg of heat is added in the boiler. The pump has an efficiency of 92% while the isentropic efficiency of the turbine is 94%. Assume there are no pressure losses in the condenser and boiler, and that both the pump and turbine are adiabatic. 1. What is the temperature of the pump inlet? 2. What is the enthalpy, in kJ/kg, of the water at the pump outlet? Remember that this is a reversible, open system, with an incompressible substance! Report your answer to one decimal point using rounding. 3. What is the turbine inlet temperature in °C? Report your answer to one decimal place using rounding.
A simple but non-ideal Rankine cycle operates with water as the working fluid and operating between pressure limits of 75 kPa and 10 MPa. Water enters the pump subcooled by 4°C and 3200 kJ/kg of heat is added in the boiler. The pump has an efficiency of 92% while the isentropic efficiency of the turbine is 94%. Assume there are no pressure losses in the condenser and boiler, and that both the pump and turbine are adiabatic.
1. What is the temperature of the pump inlet?
2. What is the enthalpy, in kJ/kg, of the water at the pump outlet? Remember that this is a reversible, open system, with an incompressible substance! Report your answer to one decimal point using rounding.
3. What is the turbine inlet temperature in °C? Report your answer to one decimal place using rounding.
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