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2. A parallel flow heat exchanger is used to cool 4.2 kg/min of hot liquid of specific heat 3.5 kJ/kg K at 130 C. A

2. A parallel flow heat exchanger is used to cool 4.2 kg/min of hot liquid of specific heat 3.5 kJ/kg K at 130 C. A cooling water of specific heat 4.18 kJ/kg K is used for cooling purposes of a temperature of 15 C. The mass flow rate of cooling water is 17 kg/min. calculate the following 1. Heat exchange area. 2. Rate of heat transfer.

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