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Consider a geothermal supply of hot water available as saturated liquid at P_{1} = 1.5 MPa. This liquid is to be flashed (throttled) to some lower pressure P_{2}. The saturated liquid and saturated vapor at this pressure are separated, and the vapor is expanded through a reversible adiabatic turbine to the exhaust pressure P_{3} = 10 kPa. Study the turbine power output per unit initial mass ml as a function of the value of pressure P_{2}.
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