Reconsider Prob. 6-85. Using EES (or other) software, investigate the effect of the inlet temperature of cooling water on the mass flow rate of water. Let the inlet temperature vary from 10 to 40°C, and assume the exit temperature to remain constant. Plot the mass flow rate of water against the inlet temperature, and discuss the results.
Prob. 6-85.
A heat exchanger is to cool ethylene glycol (cp = 2.56 kJ/kg · °C) flowing at a rate of 2 kg/s from 80°C to 40°C by water (cp = 4.18 kJ/kg · °C) that enters at 20°C and leaves at 55°C. Determine (a) the rate of heat transfer and (b) the mass flow rate of water.
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