The 7FA gas turbine manufactured by General Electric is reported to have an efficiency of 35.9 percent in the simple cycle mode and to produce 159 MW of net power. The pressure ratio is 14.7 and the turbine inlet temperature is 1288°C. The mass flow rate through the turbine is 1,536,000 kg/h. Taking the ambient conditions to be 30°C and 100 kPa, determine the isentropic efficiencies of the turbine and the compressor. Also, determine the thermal efficiency of this gas turbine if a regenerator with an effectiveness of 66 percent is added. Use variable specific heats for air. The isentropic efficiency of the turbine is The isentropic efficiency of the compressor is %. The thermal efficiency of the gas turbine with the regenerator is %.

The 7FA gas turbine manufactured by General Electric is reported to have an efficiency of 35.9 percent in the simple cycle mode and to produce 159 MW of net power. The pressure ratio is 14.7 and the turbine inlet temperature is 1288°C. The mass flow rate through the turbine is 1,536,000 kg/h. Taking the ambient conditions to be 30°C and 100 kPa, determine the isentropic efficiencies of the turbine and the compressor. Also, determine the thermal efficiency of this gas turbine if a regenerator with an effectiveness of 66 percent is added. Use variable specific heats for air. The isentropic efficiency of the turbine is The isentropic efficiency of the compressor is %. The thermal efficiency of the gas turbine with the regenerator is %.

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

The 7FA gas turbine manufactured by General Electric is reported to have an efficiency of 35.9 percent in the simple cycle mode and
to produce 159 MW of net power. The pressure ratio is 14.7 and the turbine inlet temperature is 1288°C. The mass flow rate through the
turbine is 1,536,000 kg/h. Taking the ambient conditions to be 30°C and 100 kPa, determine the isentropic efficiencies of the turbine
and the compressor. Also, determine the thermal efficiency of this gas turbine if a regenerator with an effectiveness of 66 percent is
added. Use variable specific heats for air.
The isentropic efficiency of the turbine is
The isentropic efficiency of the compressor is
%.
The thermal efficiency of the gas turbine with the regenerator is [
%.
%.

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