Question

A parallel flow heat exchanger is used to transfer heat from hot
water at 80^{o}C, flowing at 5 L/min to cold water at
15^{o}C which is flowing at a rate of 15 L/min. The overall
heat transfer coefficient is 2000 W/m^{2o}C and the area is
0.2m^{2}.

Calculate the heat transfer rate, the outlet temperature of the cold water.

Answer #1

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rate of 3.7 kg s-1, whilst the water stream enters at
110oC at a rate of 2.5 kg s-1. The heat
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A process fluid having a specific heat of 3500 J/kg?K and
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Milk enters a heat exchanger at 200C and is heated to
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A hot fluid of specific heat 4100 J/kg K flows through
a parallel flow heat exchanger at the rate of 3.5 kg/min with an
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Cold water enters a counter flow heat exchanger at 20ºC at a
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A counter current double pipe heat exchanger is used to boil but
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Latent heat of water: 2265 kJ/kg
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A heat exchanger uses saturated steam at 375 K to heat cold
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