Q4/Air enters the compressor of a gas-turbine engine at 300 K and 100 kPa, where it is compressed to 700 kPa and 580 K. Heat is transferred to air in the amount of 950 kJ/kg before it enters the turbine. For a turbine sentropic efficiency of 86 percent, determine (a) the fraction of the turbine work output used to drive the compressor and (b) the thermal efficiency. Assume constant specific heats for air and 7isc =100%

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Q4/Air enters the compressor of a gas-turbine engine at 300 K and 100 kPa, where it is compressed to 700 kPa
and 580 K. Heat is transferred to air in the amount of 950 kJ/kg before it enters the turbine. For a turbine
isentropic efficiency of 86 percent, determine (a) the fraction of the turbine work output used to drive the
compressor and (b) the thermal efficiency. Assume constant specific heats for air and 7isc =100%
Transcribed Image Text:Q4/Air enters the compressor of a gas-turbine engine at 300 K and 100 kPa, where it is compressed to 700 kPa and 580 K. Heat is transferred to air in the amount of 950 kJ/kg before it enters the turbine. For a turbine isentropic efficiency of 86 percent, determine (a) the fraction of the turbine work output used to drive the compressor and (b) the thermal efficiency. Assume constant specific heats for air and 7isc =100%
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