Hot oil (cp = 2200 J/kg·K) is to be cooled by water (cp = 4180 J/kg·K) in a 2-shell-passes and 12-tube-passes heat exchanger. The tubes are thin-walled and are made of copper with a diameter of 1.8 cm. The length of each tube pass in the heat exchanger is 3 m, and the overall heat transfer coefficient is 340 W/m2·K. Water flows through the tubes at a total rate of 0.1 kg/s, and the oil through the shell at a rate of 0.2 kg/s. The water and the oil enter at temperatures 18°C and 160°C, respectively. Determine the rate of heat transfer in the heat exchanger and the outlet temperatures of the water and the oil.
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.
Hot oil (cp = 2200 J/kg·K) is to be cooled by water
(cp = 4180 J/kg·K) in a 2-shell-passes and 12-tube-passes heat
exchanger. The tubes are thin-walled and are made of copper
with a diameter of 1.8 cm. The length of each tube pass in the
heat exchanger is 3 m, and the overall heat transfer coefficient
is 340 W/m2·K. Water flows through the tubes at a total rate
of 0.1 kg/s, and the oil through the shell at a rate of 0.2 kg/s.
The water and the oil enter at temperatures 18°C and 160°C,
respectively. Determine the rate of heat transfer in the heat
exchanger and the outlet temperatures of the water and the oil.
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