Consider the flow of motor oil (cp=2048 J/kg K) through a copper tube of thin wall at a rate of 0.3 kg/s. The oil enters the copper tubes at a temperature of 80°C that is cooled by means of water that enters at 20°C. Temperature outlet of the oil cannot be higher than 40°C. The convective coefficient of heat transfer from the oil side is 750W/m2 K and from the water side 350W/m2 K. If The outlet temperature of the water is measured at 32°C and a heat exchanger is considered. double tube in parallel. Determine: a) Mass flow rate of the water. b) The difference of log mean temperatures. c) the area of the heat exchanger.
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.
Consider the flow of motor oil (cp=2048 J/kg K) through a copper tube of
thin wall at a rate of 0.3 kg/s. The oil enters the copper tubes at a
temperature of 80°C that is cooled by means of water that enters at 20°C. Temperature
outlet of the oil cannot be higher than 40°C. The convective coefficient of
heat transfer from the oil side is 750W/m2 K and from the water side 350W/m2 K. If
The outlet temperature of the water is measured at 32°C and a heat exchanger is considered.
double tube in parallel.
Determine:
a) Mass flow rate of the water.
b) The difference of log mean temperatures.
c) the area of the heat exchanger.
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