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Diagrams of Ideal and Real Processes
Power Plant Components - h1012v1_105

Thermodynamics Heat Transfer and Fluid Flow Volume 1 of 3
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SECOND LAW OF THERMODYNAMICS Thermodynamics Power Plant Components Figure 24   Expansion and Compression Processes on T-s Diagram Figure 25   Expansion and Compression Processes on h-s Diagram In order to analyze a complete power plant steam power cycle, it is first necessary to analyze the elements which make up such cycles. (See Figure 26)  Although specific designs differ, there are three basic types of elements in power cycles, (1) turbines, (2) pumps and (3) heat exchangers. Associated with each of these three types of elements is a characteristic change in the properties of the working fluid. Previously    we    have    calculated Figure 26    Steam Cycle system  efficiency  by  knowing  the temperature of the heat source and the heat sink.  It is also possible to calculate  the  efficiencies  of  each individual component. The   efficiency   of   each   type   of component  can  be  calculated  by comparing the actual work produced by the component to the work    that    would    have    been produced  by  an  ideal  component operating   isentropically   between the same inlet and outlet conditions. HT-01 Page 78 Rev. 0







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