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Category > Applied Sciences Posted 07 May 2017 My Price 7.00

In a marine gas turbine

In a marine gas turbine unit a high-pressure stage turbine drives the compressor, and a low-pressure stage

turbine drives the propeller through suitable gearing. The overall pressure ratio is 4 : 1, and the maximum

temperature is 650°C. The isentropic efficiencies of the compressor, H.P. turbine, and L.P. turbine are 0.8,

0.83, and 0.85 respectively, and the mechanical efficiency of both shafts is 98%. Calculate the pressure

between turbine stages when the air intake conditions are 1.01 bar and 25°C. Calculate also the thermal

efficiency and the shaft power when the mass flow is 60 kg/s. Neglect kinetic energy changes, and pressure

loss in combustion.

 

Answers

IT KING
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Status NEW Posted 07 May 2017 12:05 PM My Price 7.00

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