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Unformatted text preview: iveness of 0.78 and the air enters
the turbine at 1300 K. The compressor efficiency is 0.80 and the turbine efficiency is 0.88. Assuming air
is an ideal gas with constant specific heats and using the cold-air standard assumption, determine:
(c) Back Work Ratio (BWR)
Heat transfer in the regenerator
Cycle thermal efficiency Solution:
The isentropic temperature at compressor exit is
( () ) ( () )( ) To find the actual temperature at compressor exit, ( , we apply the compressor efficiency ) ( ) Since the compressor is adiabatic and has steady-flow
Turbine Analysis: ) ( ) The conservation of energy for the turbine, process 3-4, yields for constant specific heats
̇ ̇( ) ̇ (
̇ Since and (
̇ ) ) , we can find the isentropic temperature at the turbine exit.
( ) () () ( ) To find the actual temperature at...
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This test prep was uploaded on 02/25/2014 for the course ME 235 taught by Professor Borgnakke during the Spring '07 term at University of Michigan.
- Spring '07