The air from the compressor is led to a regenerative heat exchanger where the exhaust gases from the low pressure turbine heat the exit air from the compressor. The air from the regenerative heat exchanger passes on to the high pressure combustion chamber. The high pressure turbine drives the compressor only. The exhaust from high pressure turbine is led to the low pressure combustion chamber and then on to the law pressure turbine which is connected to the external load. The compression ratio in compressor is 4. The efficiency of the compressor, high pressure turbine and low pressure turbine is 85%, 84%, and 80%. The mechanical efficiency of drive to compressor is 93% while the regenerative heat-exchanger effectiveness is 75%. The temperature of gases entering the high-pressure turbine is 930K wile the temperature of gases entering the low-pressure turbine is 900K. The Cp of exhaust gases is 1.18 kJ/kg K while y for exhaust gases is 1.34. The ambient conditions are 1 bar and 290K. Determine: (a) the pressure at which gases enter the LP turbine (b) the net work produced per kg of air (c) the overall plant efficiency

The air from the compressor is led to a regenerative heat exchanger where the exhaust gases from the low pressure turbine heat the exit air from the compressor. The air from the regenerative heat exchanger passes on to the high pressure combustion chamber. The high pressure turbine drives the compressor only. The exhaust from high pressure turbine is led to the low pressure combustion chamber and then on to the law pressure turbine which is connected to the external load. The compression ratio in compressor is 4. The efficiency of the compressor, high pressure turbine and low pressure turbine is 85%, 84%, and 80%. The mechanical efficiency of drive to compressor is 93% while the regenerative heat-exchanger effectiveness is 75%. The temperature of gases entering the high-pressure turbine is 930K wile the temperature of gases entering the low-pressure turbine is 900K. The Cp of exhaust gases is 1.18 kJ/kg K while y for exhaust gases is 1.34. The ambient conditions are 1 bar and 290K. Determine: (a) the pressure at which gases enter the LP turbine (b) the net work produced per kg of air (c) the overall plant 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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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

4. The air from the compressor is led to a regenerative heat exchanger where the exhaust gases from
the low pressure turbine heat the exit air from the compressor. The air from the regenerative heat
exchanger passes on to the high pressure combustion chamber. The high pressure turbine drives the
compressor only. The exhaust from high pressure turbine is led to the low pressure combustion chamber
and then on to the law pressure turbine which is connected to the external load. The compression
ratio in compressor is 4. The efficiency of the compressor, high pressure turbine and low pressure
turbine is 85%, 84%, and 80%. The mechanical efficiency of drive to compressor is 93% while the
regenerative heat-exchanger effectiveness is 75%. The temperature of gases entering the high-pressure
turbine is 930K wile the temperature of gases entering the low-pressure turbine is 900K. The Cp of
exhaust gases is 1.18 kJ/kg K while y for exhaust gases is 1.34. The ambient conditions are 1 bar and
290K. Determine:
(a) the pressure at which gases enter the LP turbine
(b) the net work produced per kg of air
(c) the overall plant efficiency

Regenerator
Exhaust
Comp.
www
3
7711
Comb
HP
HP
Turbine
51
Comb
LP
200
6
7

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