A simple actual Brayton cycle using air as the working fluid has a pressure ratio of 8. The minimum and maximum temperatures in the cycle are 310 and 1160 K. Assume the start of isentropic compression being state point 1, and an isentropic efficiency of 75 percent for the compressor and 82 percent for the turbine. Account for the variation of specific heats with temperature. [Hint: Do not consider the average values of specific heats. Use the concept of relative pressures.](a) Draw this actual Brayton cycle on T-s diagrams. Also draw the schematic block diagram of the gas-turbine power plant which works on this cycle. Determine: (b) the air temperature at the turbine exit in K, (c) the net work output in kJ/kg, and (d) the thermal efficiency
A simple actual Brayton cycle using air as the working fluid has a pressure ratio of 8. The minimum and maximum temperatures in the cycle are 310 and 1160 K. Assume the start of isentropic compression being state point 1, and an isentropic efficiency of 75 percent for the compressor and 82 percent for the turbine. Account for the variation of specific heats with temperature. [Hint: Do not consider the average values of specific heats. Use the concept of relative pressures.](a) Draw this actual Brayton cycle on T-s diagrams. Also draw the schematic block diagram of the gas-turbine power plant which works on this cycle. Determine: (b) the air temperature at the turbine exit in K, (c) the net work output in kJ/kg, and (d) the thermal 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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A simple actual Brayton cycle using air as the working fluid has a pressure ratio of 8.
The minimum and maximum temperatures in the cycle are 310 and 1160 K. Assume the
start of isentropic compression being state point 1, and an isentropic efficiency of 75
percent for the compressor and 82 percent for the turbine.
Account for the variation of specific heats with temperature. [Hint: Do not consider the
average values of specific heats. Use the concept of relative pressures.](a) Draw this actual Brayton cycle on T-s diagrams. Also draw the schematic block
diagram of the gas-turbine power plant which works on this cycle.
Determine:
(b) the air temperature at the turbine exit in K,
(c) the net work output in kJ/kg, and
(d) the thermal efficiency
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