In a gas turbine the compressor takes in air at a temperature of 15°C and compresses it to four times the initial pressure with an isentropic efficiency of 82%. The air is then passes through a heat exchanger heated by the turbine exhaust before reaching the combustion chamber. In the heat exchanger 78% of the available heat is given to the air. The maximum temperature after constant pressure combustion is 600°C, and the efficiency of the turbine is 70%. Neglecting all losses except those mentioned, and assuming the working

In a gas turbine the compressor takes in air at a temperature of 15°C and compresses it to four times the initial pressure with an isentropic efficiency of 82%. The air is then passes through a heat exchanger heated by the turbine exhaust before reaching the combustion chamber. In the heat exchanger 78% of the available heat is given to the air. The maximum temperature after constant pressure combustion is 600°C, and the efficiency of the turbine is 70%. Neglecting all losses except those mentioned, and assuming the working

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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Concept explainers

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

Question

In a gas turbine the compressor
takes in air at a temperature of 15°C
and compresses it to four times the
initial pressure with an isentropic
efficiency of 82%. The air is then
passes through a heat exchanger
heated by the turbine exhaust before
reaching the combustion chamber.
In the heat exchanger 78% of the
available heat is given to the air. The
maximum temperature after constant
pressure combustion is 600°C, and
the efficiency of the turbine is 70%.
Neglecting all losses except those
mentioned, and assuming the working
fluid throughout the cycle to have the
characteristic of air find the efficiency
of the cycle. Assume R-0.287 kJ/kg K.
and y - 1.4 for air and constant specific
heats throughout 11.77. wnet. 29.2 Kg/
kg.

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