# Ctri Alt Part B (80 points) A nuclear reactor power plant utilizing water as the working fluid is...

###### Question:

Ctri Alt Part B (80 points) A nuclear reactor power plant utilizing water as the working fluid is to be analyzed in this problem. The reactor vessel (like a boiler) receives water from a pump and with heat addition produces water at 1500 lbf/in.2 and 500 F. The high-temperature compressed liquid from the reactor is throttled (in a valve) into a flash evaporator separating the fluid into vapor (saturated) and liquid at 300 lbf/in.2. The fraction of the water that flashes into vapor flows to a turbine, while that which remains liquid flows into a mixing chamber. The fluid leaving the turbine at 1 lbf/in. is condensed and pumped into the mixing chamber. To complete the cycle, the combined fluid exiting the mixing chamber is pumped into the reactor to complete the cycle. Turbine and pump efficiencies are given as 85% and 80% respectively. Ass dead state conditions are atmospheric at 7E. You are asked to do the following: ume the 75 F 1. Draw a neat and clearly labeled schematic of the plant arrangement.
8. Determ ine the thermal efficiency of the plant. Comment on your result.
9. By selecting an appropriate control volume, calculate the entropy gencration in the flash evaporator per pound mass of water entering. What is the irreversibility in the flash evaporator per pound mass of water entering? 10. By selecting an appropriate control volume, calculate the entropy generation in the mixing chamber per pound mass of water leaving. What is the irreversibility in the mixing chamber per pound mass water leaving?

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