A single-pass cross-flow heat exchanger withboth fluids unmixed has water entering at 16°C and exitingat 33°C, while oil (cp = 1.93 kJ/kg·K and r = 870 kg/m3)flowing at 0.19 m3/min enters at 38°C and exits at 29°C. Ifthe surface area of the heat exchanger is 20 m2, determine(a) the NTU value and (b) the value of the overall heat transfercoefficient.
Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
A single-pass cross-flow heat exchanger with
both fluids unmixed has water entering at 16°C and exiting
at 33°C, while oil (cp = 1.93 kJ/kg·K and r = 870 kg/m3)
flowing at 0.19 m3/min enters at 38°C and exits at 29°C. If
the surface area of the heat exchanger is 20 m2, determine
(a) the NTU value and (b) the value of the overall heat transfer
coefficient.
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