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R134a is compressed from 150 kPa, -10 C, to 1200 kPa, 50C. The shaft work input is estimated to be 150 kW, and it is

R134a is compressed from 150 kPa, -10 C, to 1200 kPa, 50C. The shaft work input is estimated to be 150 kW, and it is water-cooled with heat losses of 40 kW. Determine:

a. The compressor's specific shaft work input.

b. R134a mass flow rate

c. If water enters at 10C, a mass flow rate of cooling water is required.

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