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A steam power plant operating in a Rankine cycle has saturated vapor at 4.0 MPa leaving the boiler. The turbine exhausts to the condenser, operating at 75 kPa, and the mass flow rate of the working fluid is 5.0 kg/hr. The turbine efficiency is 0.85. Solve for the work produced by the turbine and the pump (in Watts), the heat transfer in the boiler (in Watts), and the Rankine cycle efficiency. Equations: Efficiency of a turbine: W,(actual) W,(isentropic) H₂ H₂.actual - H₁ 12.isentropic - H₁ Efficiency of a compressor: H2.isentropic - H₁ W,(isentropic) W,(actual) H2.actual - H₁ Rankine cycle efficiency: η = Wnet Он Wturbine-Wpump| Qboiler COP of a refrigerator: QL (heat absorbed from cold space) We(work input to the compressor) Thermodynamic tables: Water R-134a n = η = B = Van Ness - Page 681 Sonntag - Page 776 Sonntag - Page 810

A steam power plant operating in a Rankine cycle has saturated vapor at 4.0 MPa leaving the boiler. The turbine exhausts to the condenser, operating at 75 kPa, and the mass flow rate of the working fluid is 5.0 kg/hr. The turbine efficiency is 0.85. Solve for the work produced by the turbine and the pump (in Watts), the heat transfer in the boiler (in Watts), and the Rankine cycle efficiency. Equations: Efficiency of a turbine: W,(actual) W,(isentropic) H₂ H₂.actual - H₁ 12.isentropic - H₁ Efficiency of a compressor: H2.isentropic - H₁ W,(isentropic) W,(actual) H2.actual - H₁ Rankine cycle efficiency: η = Wnet Он Wturbine-Wpump| Qboiler COP of a refrigerator: QL (heat absorbed from cold space) We(work input to the compressor) Thermodynamic tables: Water R-134a n = η = B = Van Ness - Page 681 Sonntag - Page 776 Sonntag - Page 810

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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1. A steam power plant operating in a Rankine cycle has saturated vapor at 4.0 MPa leaving the boiler. The turbine exhausts to the condenser, operating at 75 kPa, and the mass flow rate of the working fluid is 5.0 kg/hr. The turbine efficiency is 0.85. Solve for the work produced by the turbine and the pump (in Watts), the heat transfer in the boiler (in Watts), and the Rankine cycle efficiency. Equations: Efficiency of a turbine: η W, (actual) W,(isentropic) H2.actual - H₁ H2isentropic - H₁ Efficiency of a compressor: W,(isentropic) W,(actual) = H2.isentropic - H₁ H₂,actual - H₁ Rankine cycle efficiency: Wnet n = QH Wturbine-Wpump| Qboiler COP of a refrigerator: QL (heat absorbed from cold space) We(work input to the compressor) n = B Van Ness - Page 681 Sonntag - Page 776 Sonntag - Page 810 Thermodynamic tables: Water R-134a
Transcribed Image Text:1. A steam power plant operating in a Rankine cycle has saturated vapor at 4.0 MPa leaving the boiler. The turbine exhausts to the condenser, operating at 75 kPa, and the mass flow rate of the working fluid is 5.0 kg/hr. The turbine efficiency is 0.85. Solve for the work produced by the turbine and the pump (in Watts), the heat transfer in the boiler (in Watts), and the Rankine cycle efficiency. Equations: Efficiency of a turbine: η W, (actual) W,(isentropic) H2.actual - H₁ H2isentropic - H₁ Efficiency of a compressor: W,(isentropic) W,(actual) = H2.isentropic - H₁ H₂,actual - H₁ Rankine cycle efficiency: Wnet n = QH Wturbine-Wpump| Qboiler COP of a refrigerator: QL (heat absorbed from cold space) We(work input to the compressor) n = B Van Ness - Page 681 Sonntag - Page 776 Sonntag - Page 810 Thermodynamic tables: Water R-134a
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