Transcription of Chapter 7 Vapor and Gas Power Systems - CPP
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Chapter 7 Vapor and Gas Power Systems - CPP
7-1 Chapter 7 Vapor and Gas Power Systems In this Chapter , we will study the basic components of common industrial Power and refrigeration Systems . These Systems are essentially thermodyanmic cycles in which a working fluid is alternatively vaporized and condensed as it flows through a set of four processes and returns to its initial state. We will use the first and second laws of thermodynamics to analyze the performance of ower and refrigeration cycles. Rankine Cycle We can use a Rankine cycle to convert a fossil-fuel, nuclear, or solar Power source into net electrical Power . Figure shows the components of a Rankine cycle and Figure identifies the states of the Rankine cycle on a Ts diagram. FuelairBoilerQHQCC ondenserTurbinePumpWpWtRankine cycle1234 Figure The ideal Rankine cycle Figure The path of an ideal Rankine cycle1 1 Moran, M. J. and Shapiro H. N., Fundamentals of Engineering Thermodynamics, Wiley, 2008, pg.
If the steam enters as a superheated vapor, it does not condense significantly in the turbine. If the steam is saturated as it enters the turbine, a significant of liquid is formed which causes erosion and wear of the turbine blades. Process 2-3: The steam enters the condenser and exits in state 3 as saturated liquid water.
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