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{"ops":[{"insert":"7. In an air compressor air flows steadily at the rate of 0.5 kg\/s through an\nair compressor. It enters the compressor at 6 m\/s with a pressure of 1 bar and a specific volume\nof 0.85 m3\/kg and leaves at 5 m\/s with a pressure of 7 bar and a specific volume of 0.16 m3\/kg. The\ninternal energy of the air leaving is 90 kJ\/kg greater than that of the air entering. Cooling water\nin a jacket surrounding the cylinder absorbs heat from the air at the rate of 60 kJ\/s. Calculate :\n(i) The power required to drive the compressor ;\n(ii) The inlet and output pipe cross-sectional areas\n"}]}
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