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The air was 30C, it flew through a heat exchanger, the velocity a is 5m/s, the height of the heat exchanger was 3m. Then the

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The air was 30C, it flew through a heat exchanger, the velocity a is 5m/s, the height of the heat exchanger was 3m. Then the air was heated to 150C, the diameters of the inlet and outlet pipes are the same, the heat capacity of the air is To = 1.005kJ/(kg-K) How much heat did the air get from the exchanger? (the mass of air is 1 kg)

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