Oil in an engine is being cooled by air in a cross-flow heat exchanger, where both fluids are unmixed. Oil (cph 5 2047 J/kg?K) flowing with a flow rate of 0.026 kg/s enters the heat exchanger at 758C, while air (cpc 5 1007 J/kg?K) enters at 308C with a flow rate of 0.21 kg/s. The overall heat transfer coefficient of the heat exchanger is 53 W/m2 ?K and the total surface area is 1 m2 . Determine (a) the heat transfer effectiveness and (b) the outlet temperature of 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.
Oil in an engine is being cooled by air in a cross-flow
heat exchanger, where both fluids are unmixed. Oil (cph 5
2047 J/kg?K) flowing with a flow rate of 0.026 kg/s enters the
heat exchanger at 758C, while air (cpc 5 1007 J/kg?K) enters
at 308C with a flow rate of 0.21 kg/s. The overall heat transfer
coefficient of the heat exchanger is 53 W/m2
?K and the total
surface area is 1 m2
. Determine (a) the heat transfer effectiveness and (b) the outlet temperature of the oil.
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