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A compressor brings R134a from 150 kPa, -10o C to 1200 kPa, 50o C. It is water-cooled, with heat losses of 40 kW, and shaft

A compressor brings R134a from 150 kPa, -10o C to 1200 kPa, 50o C. It is water-cooled, with heat losses of 40 kW, and shaft work input is measured to be 150 kW. Determine:

a. Specific shaft work input required by the compressor

b. Mass flow rate of R134a

c. Mass flow rate of cooling water needed if it enters at 10o C and exits at 30o C

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