DIRECTION: Show your complete solutions. Carnot Vapor Cycle: (ANALYSIS) (60 points) 1) Water enters the boiler of a stea
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DIRECTION: Show your complete solutions. Carnot Vapor Cycle: (ANALYSIS) (60 points) 1) Water enters the boiler of a stea
DIRECTION: Show your complete solutions. Carnot Vapor Cycle: (ANALYSIS) (60 points) 1) Water enters the boiler of a steady-flow Carnot engine as a saturated liquid at 2,750 kPa and leaves with a quality of 0.88. Steam leaves the turbine at a pressure of 150 kPa. Show the cycle on a T-s diagram relative to the saturation lines, and determine (a) the thermal efficiency, (b) the quality at the end of the isothermal heat-rejection process, and (c) the net work output in kJ/kg. 2) Consider a steady-flow Carnot cycle with water as the working fluid. The maximum and minimum temperatures in the cycle are 660 and 140°F. The quality of water is 0.88 at the beginning of the heat-rejection process and 0.2 at the end. Show the cycle on a T-s diagram relative to the saturation lines, and determine (a) the thermal efficiency, (b) the pressure at the turbine inlet in psia, and (c) the net work output in Btu/lbm. The Simple Rankine Cycle (ANALYSIS) (40 points) 3) A simple ideal Rankine cycle which uses water as the working fluid operates its condenser at 35°C and its boiler at 305°C. Calculate the work produced by the turbine in kJ/kg, the heat supplied in the boiler in kJ/kg, and the thermal efficiency of this cycle when the steam enters the turbine without any superheating. ⒸHI Wpumpin - Pump 0-1 gin Boiler Condenser Yout -3 Turbine Wurbout -> 1-0