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3.- In an industrial process, a concentric tube exchanger is used to cool 1800 Kg /...

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Mechanical Engineering

3.- In an industrial process, a concentric tube exchanger isused to cool 1800 Kg / hr of ammonia from 80 ° C to 35 ° Ccirculating through the annular space, with 1485 Kg / hr of waterentering the concentric tube at 25 ° C. The water leaving theexchanger is sent to a mixing tank with agitation, which is fed byanother stream of water at 15 ° C in order to reduce itstemperature to 25 ° C and reuse it in the heat exchanger.Considering that the specific heat of ammonia is a function oftemperature, how many Kg / hr should water be supplied to themixing tank at 15 ° C?

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