Determine the cycle thermal efficiency

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Reference no: EM131348489

1. Show that the product of the compressor and turbine isentropic efficiencies must be greater than (TL/TH) 1/2 if a Brayton cycle gas turbine unit is to operate at its maximum power output.

2. A test on an open loop Brayton cycle gas turbine produced the following results:

Net power output = 180:5 hp
Air mass flow rate = 20:0 × 103 lbm/h
Inlet air temperature = 80:0°F
Inlet air pressure = 14:5 psia
Compressor exit pressure = 195 psia
Compressor isentropic efficiency = 85:0%
Combustion chamber heat addition = 4:00 × 106 Btu/h
Using a cold ASC analysis and assuming k = 1.40, determine

a. The cycle thermal efficiency.

b. The isentropic efficiency of the turbine.

Reference no: EM131348489

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