A heat exchanger is to heat water from 25 to 60°C at a

Chapter 5, Problem 76P

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A heat exchanger is to heat water \(\left(c_{p}=4.18 \mathrm{~kJ} / \mathrm{kg}{ }^{\circ} \mathrm{C}\right)\) from 25 to \(60^{\circ} \mathrm{C}\) at a rate of \(0.2 \mathrm{~kg} / \mathrm{s}\). The heating is to be accomplished by geothermal water \(\left(c_{p}=4.31 \mathrm{~kJ} / \mathrm{kg} \cdot{ }^{\circ} \mathrm{C}\right)\) available at \(140^{\circ} \mathrm{C}\) at a mass flow rate of \(0.3 \mathrm{~kg} / \mathrm{s}\). Determine the rate of heat transfer in the heat exchanger and the exit temperature of geothermal water.

Equation Transcription:

Text Transcription:

(c_p=4.18 kJ/kg dot degree celsius)

60 degree celsius

0.2 kg/s

c_p=4.31 kJ/kg dot degree celsius

140 degree celsius

0.3 kg/s

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