Consider a cogeneration power plant that is modified with

Chapter 10, Problem 100P

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Consider a cogeneration power plant that is modified with reheat and that produces  of power and supplies  of process heat. Steam enters the high-pressure turbine at  and \(500^{\circ} \mathrm{C}\) and expands to a pressure of 1 MPa. At this pressure, part of the steam is extracted from the turbine and routed to the process heater, while the remainder is reheated to \(500^{\circ} \mathrm{C}\) and expanded in the low-pressure turbine to the condenser pressure of . The condensate from the condenser is pumped to  and is mixed with the extracted steam, which leaves the process heater as a compressed liquid at \(120^{\circ} \mathrm{C}\). The mixture is then pumped to the boiler pressure. Assuming the turbine to be isentropic, show the cycle on a  diagram with respect to saturation lines, and disregarding pump work, determine

 the rate of heat input in the boiler and

 the fraction of steam extracted for process heating.

Equation Transcription:

     

         

   

Text Transcription:

500°C      

500°C        

120°C    

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