2. Consider a steam power plant that operates on an ideal reheat-regenerative Rankine cycle with one open feedwater heater. The steam enters the high-pressure turbine at 600°C. Some steam (18.5%) is extracted from the turbine at 1.2 MPa and diverted to a mixing chamber for a regenerative feedwater heater. The rest of the steam is reheated at the same pressure to 600°C before entering the low-pressure turbine. The isentropic efficiency of the low pressure turbine is 85%. The pressure at the condenser is 50 kPa. a) Draw the T-S diagram of the cycle and calculate the relevant enthalpies. b) Calculate the pressure in the high pressure turbine and the thermal efficiency of the cycle.

2. Consider a steam power plant that operates on an ideal reheat-regenerative Rankine cycle with one open feedwater heater. The steam enters the high-pressure turbine at 600°C. Some steam (18.5%) is extracted from the turbine at 1.2 MPa and diverted to a mixing chamber for a regenerative feedwater heater. The rest of the steam is reheated at the same pressure to 600°C before entering the low-pressure turbine. The isentropic efficiency of the low pressure turbine is 85%. The pressure at the condenser is 50 kPa. a) Draw the T-S diagram of the cycle and calculate the relevant enthalpies. b) Calculate the pressure in the high pressure turbine and the thermal efficiency of the cycle.

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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