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Question: determine in kw a the magnitude of the exergy input...

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Problem 7.061 SI The figure below shows a compressor fitted with a water jacket. The compressor operates at steady state and takes in air with a volumetric flow rate of 2900 m3/h at 22°C, 0.95 bar and discharges air at 317°C, 8 bar. Cooling water enters the water jacket at 20°C, 100 kPa with a mass flow rate of 4511 kg/h and exits at 30°C and essentially the same pressure. The accompanying table gives steady-state operating data. There is no significant heat transfer from the outer surface of the water jacket to its surroundings, and the effects of motion and gravity can be ignored. Let To = 20°C, Po-1 atm, and model the water as incompressible with c4.19 kJ/kg State Fluid Type ToC p(bar) (k)/kg) s(k/kg K) 1 Air 22 0.95 295.21.685 2 Air 317 8 596.5 2.391 as0 is the variable appearing in Eq. 6.20a and Table A-22. Cooling water Air Compressor

Determine, in kW:

(a) the magnitude of the exergy input with compressor power.

(b) the rate of exergy destruction.

(c) the net increase of flow exergy for the air.

(d) the net increase of flow exergy for the water.

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