Oil is being cooled from 180°F to 120°F in a 1-shell and 2-tube heat exchanger with an overall heat transfer coefficient of 40 Btu/h·ft2·°F. Water (cpc = 1.0 Btu/lbm·°F) enters at 80°F and exits at 100°F with a mass flow rate of 20,000 lbm/h, determine (a) the NTU value and (b) the surface 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.
Oil is being cooled from 180°F to 120°F in a
1-shell and 2-tube heat exchanger with an overall heat transfer
coefficient of 40 Btu/h·ft2·°F. Water (cpc = 1.0 Btu/lbm·°F)
enters at 80°F and exits at 100°F with a mass flow rate of
20,000 lbm/h, determine (a) the NTU value and (b) the
surface area of the heat exchanger.
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