Steam enters a turbine operating at steady state at 4 MPa, 500°C with a mass flow rate of 50 kg/s. Saturatedvapor exits at 10 kPa and the corresponding power developed is 42 MW. The effects of motion and gravityare negligible.(a) For a control volume enclosing the turbine, determine the rate of heat transfer, in MW, from the turbineto its surroundings. Assuming an average turbine outer surface temperature of 50°C, determine the rate ofexergy destruction, in MW.(b) If the turbine is located in a facility where the ambient temperature is 27°C, determine the rate of exergydestruction for an enlarged control volume including the turbine and its immediate surroundings so heattransfer takes place at the ambient temperature. Explain why the exergy destruction values of parts (a) and(b) differ.Let To = 300 K, po = 100 kPa.

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vapor exits at 10 kPa and the corresponding power developed is 42 MW. The effects of motion a are negligible. (a) For a control volume enclosing the turbine, determine the rate of heat transfer, in Mw, from ti to its surroundings. Assuming an average turbine outer surface temperature of 50°C, determine t exergy destruction, in MW. (b) If the turbine is located in a facility where the ambient temperature is 27°C, determine the rate destruction for an enlarged control volume including the turbine and its immediate surrounding transfer takes place at the ambient temperature. Explain why the exergy destruction values of pa (b) differ. Let To = 300 K, po = 100 kPa.

vapor exits at 10 kPa and the corresponding power developed is 42 MW. The effects of motion a are negligible. (a) For a control volume enclosing the turbine, determine the rate of heat transfer, in Mw, from ti to its surroundings. Assuming an average turbine outer surface temperature of 50°C, determine t exergy destruction, in MW. (b) If the turbine is located in a facility where the ambient temperature is 27°C, determine the rate destruction for an enlarged control volume including the turbine and its immediate surrounding transfer takes place at the ambient temperature. Explain why the exergy destruction values of pa (b) differ. Let To = 300 K, po = 100 kPa.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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