27. In a gas turbine plant air at 10°C and 1.01 bar is compressed through a pressure ratio of 4: 1. In a heat exchanger and combustion chamber the air is heated to 700°C while its pressure drops 0.14 bar. After expansion through the turbine the air passes through a heat exchanger which cools the air through 75% of maximum range possible, while the pressure drops 0.14 bar, and the air is finally exhausted to atmosphere. The isentropic efficiency of the compressor is 0.80 and that of turbine 0.85. Calculate the efficiency of the plant. (Ans. 22.76%)

27. In a gas turbine plant air at 10°C and 1.01 bar is compressed through a pressure ratio of 4: 1. In a heat exchanger and combustion chamber the air is heated to 700°C while its pressure drops 0.14 bar. After expansion through the turbine the air passes through a heat exchanger which cools the air through 75% of maximum range possible, while the pressure drops 0.14 bar, and the air is finally exhausted to atmosphere. The isentropic efficiency of the compressor is 0.80 and that of turbine 0.85. Calculate the efficiency of the plant. (Ans. 22.76%)

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

27. In a gas turbine plant air at 10°C and 1.01 bar is compressed through a pressure ratio of 4 :1. In a heat
exchanger and combustion chamber the air is heated to 700°C while its pressure drops 0.14 bar. After
expansion through the turbine the air passes through a heat exchanger which cools the air through 75% of
maximum range possible, while the pressure drops 0.14 bar, and the air is finally exhausted to atmosphere.
The isentropic efficiency of the compressor is 0.80 and that of turbine 0.85.
Calculate the efficiency of the plant.
(Ans. 22.76%)

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