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A countercurrent heat exchanger is being used to heat a liquid food from 15 to 17 C . The heat exchanger has a 23mm internal diameter and 10 m length with an overall heat transfer coefficient based on the inside area of 2000 W/(m^2K). Water, the heating medium, enters the heat exchanger at 95 C and leaves at 85 C. Determine the flow rates for product and water, that will provide the conditions described. Use specific heats of 3.7 Kj/Kg K for the product and 4.18 Kj/(Kg K) for water.
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