Question 3 / 33:  A fluid with heat capacity 2.2 kJ/kg K enters a heat exchanger at 90°C and leaves at 30°C at a flow rate of 5 kg/s. If the heat capacity of the cooling fluid for the heat exchanger is 1 kJ/kg K, what is its flow rate in kg/s?
A  66 g/s
B  6.6 kg/s
C  66 kg/min
D  660 kg/s
E  66 kg/s
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Explanation:

660 kW = F * 1 kJ/kg K (10 K); F = 66 kg/s.

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Thermal-Fluid Systems ME303

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Attribution:  Dr. Steve Gibbs. Thermal-Fluid Systems. The Saylor Academy 2014, http://www.saylor.org/courses/me303/
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