A thin walled double pipe counter flow heat exchanger is used to cool oil (cp 2 20 kJ kg cent deg C) from 150 to 40 deg C at a rate of 2 kg s by water (cp 4 18 kJ kg cent deg C) that enters at 22 deg C at a rate of 1 5 kg s Determine the rate of heat transfer in the heat exchanger and the exit temperature of water Hot oil 2kg s 150C Cold water 1 5 kg s 22C 40 C

Question: A thin-walled double-pipe counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg ¢ °C) from 150 to 40°C at a rate of

A thin-walled double-pipe counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg €¢ °C) from 150 to 40°C at a rate of 2 kg/s by water (cp = 4.18 kJ/kg €¢ °C) that enters at 22°C at a rate of 1.5 kg/s. Determine the rate of heat transfer in the heat exchanger and the exit temperature of water.

A thin-walled double-pipe counter-flow

Hot oil 2kg/s 150C Cold water 1.5 kg/s 22C 40 C

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