ps7_final

ps7_final - 16.050 Thermal Energy Time spent on problems...

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16.050 Thermal Energy Problem Set #7– Fall 2002 Time spent on problems: Problem 1: Problem 2: Problem 3: Problem 4: Problem 5:
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16.050 Thermal Energy Problem Set #7 – Fall 2002 Do all problems. Please use a separate sheet of paper for each problem. 1. A Carnot cycle, that uses water as two-phase working medium, is run in reverse as a refrigeration cycle. Heat is rejected at a temperature of 25 o C and the coefficient of performance is 4. (a) Sketch the Carnot refrigeration cycle in P-v and T-s diagrams. (b) At what temperature is heat absorbed from the surroundings? (c) What is the specific work required to run the Carnot refrigeration cycle? 2. Reynolds and Perkins, Engineering Thermodynamics, 2 nd Ed. Problem 5.39, pp. 150 3. An experimental geothermal energy system in Baja, California consists of a hot water well, a flasher-separator-collector, and a 10,000 kW Rankine engine. The pressurized ground water at 150 bar, 280 o C leaves the well, passes through a throttle and enters the flash chamber that is maintained at 15 bar.
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ps7_final - 16.050 Thermal Energy Time spent on problems...

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