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Question: a power plant for a polar expedition uses ammonia and...

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A power plant for a polar expedition uses ammonia and the boiler exit is 80°C, 1000

kPa and the condenser operates at -15°C. A single open "feed water" heater operates

at 400 kPa with an exit state of saturated liquid. Find the mass fraction extracted in

the turbine and the cycle efficiency.

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