Steam heated at constant pressure in a steam generator enters the first stage of a supercritical reheat cycle at 28 MPa, 520°C. Steam exiting the first-stage turbine at 6 MPa is reheated at constant pressure to 500°C. Each turbine stage has an isentropic efficiency of 90% while the pump has an isentropic efficiency of 82%. Saturated liquid exits the condenser that operates at a constant pressure of 38 kPa. Determine: (a) the quality of the steam exiting the second stage of the turbine. (b) the percent thermal efficiency.

Steam heated at constant pressure in a steam generator enters the first stage of a supercritical reheat cycle at 28 MPa, 520°C. Steam exiting the first-stage turbine at 6 MPa is reheated at constant pressure to 500°C. Each turbine stage has an isentropic efficiency of 90% while the pump has an isentropic efficiency of 82%. Saturated liquid exits the condenser that operates at a constant pressure of 38 kPa. Determine: (a) the quality of the steam exiting the second stage of the turbine. (b) the percent thermal efficiency.

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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Question

Steam heated at constant pressure in a steam generator enters the first stage of a supercritical reheat cycle at 28 MPa, 520°C. Steam
exiting the first-stage turbine at 6 MPa is reheated at constant pressure to 500°C. Each turbine stage has an isentropic efficiency of
90% while the pump has an isentropic efficiency of 82%. Saturated liquid exits the condenser that operates at a constant pressure of
38 kPa.
Determine:
(a) the quality of the steam exiting the second stage of the turbine.
(b) the percent thermal efficiency.

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