The oil (cp = 1 795 W-s/kg-K) from an oil-cooled electric transformer is cooled from 79.4 oC to 29.4 oC at the rate of 1 360.5 kg/h. This is done in an oil-water het exchanger that receives 2 948 kg/h of water at 15.6 Celsius. For the exchanger, U = 295 W/m2-K. Find the exit water temperature and heating area required (a) for counter flow and (b) for parallel flow.
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.
The oil (cp = 1 795 W-s/kg-K) from an oil-cooled electric transformer is cooled from 79.4 oC to 29.4 oC at the rate of 1 360.5 kg/h. This is done in an oil-water het exchanger that receives 2 948 kg/h of water at 15.6 Celsius. For the exchanger, U = 295 W/m2-K. Find the exit water temperature and heating area required (a) for counter flow and (b) for parallel flow.
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