2. A reheat-regenerative Rankine cycle producing 250 MW power, has two open type feedwater heaters. When a fraction steam is extracted for first stage of feed heating the remainder is reheated to 450° C. Steam enters the turbine at 7.5 MPa and 500° C and expands to 1.5MPA where the first extraction stage occurs. The remaining steam expands to 500 kPa where the second extraction stage occurs. The remainders expand through the turbine and exhaust at 7.5 kPa. Determine a) The engine thermal efficiency b) The cycle thermal efficiency c) The stearm flow rate entering the turbine d) The steam rate

2. A reheat-regenerative Rankine cycle producing 250 MW power, has two open type feedwater heaters. When a fraction steam is extracted for first stage of feed heating the remainder is reheated to 450° C. Steam enters the turbine at 7.5 MPa and 500° C and expands to 1.5MPA where the first extraction stage occurs. The remaining steam expands to 500 kPa where the second extraction stage occurs. The remainders expand through the turbine and exhaust at 7.5 kPa. Determine a) The engine thermal efficiency b) The cycle thermal efficiency c) The stearm flow rate entering the turbine d) The steam rate

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

2. A reheat-regenerative Rankine cycle producing 250 MW power, has two open type feedwater
heaters. When a fraction steam is extracted for first stage of feed heating the remainder is
reheated to 450° C. Steam enters the turbine at 7.5 MPa and 500° C and expands to 1.5MPA
where the first extraction stage occurs. The remaining steam expands to 500 kPa where the
second extraction stage occurs. The remainders expand through the turbine and exhaust at 7.5
kPa. Determine
a) The engine thermal efficiency
b) The cycle thermal efficiency
c) The steam flow rate entering the turbine
d) The steam rate

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