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A compressor operating with 17.1 kg/s water vapour with a compression ratio (P2/P1) equal to 3.0...

A compressor operating with 17.1 kg/s water vapour with a compression ratio (P2/P1) equal to 3.0 is cooled down by means of a cooling system which extracts 58 kJ/kg of heat (per unit mass of fluid) from the device. The steam enters the compressor under saturated conditions at 1.5 MPa and leaves it at 773 K.  Calculate the power required if the compressor operates with an efficiency of 0.97.   Give your answer in MW to 1 decimal place

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Answer #1

The given problem can be easily solved by considering the power input to compressor as sum of work done(by compressor) and heat loss.

Please refer to attached images for solution and do upvote this answer.

Similarly, enthalpy of cream at ext using P2 and 2) is has 3438.68. KJ1kg Now work done is ha-hi = 3438.68 - 2792.9. = 645.78

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