a shell and tube heat exchanger must be designed to heat 2.5 Kg / s of water from 15 C to 85 C. the heating is to be accomplished by passing hot engine oil ( Cp = 2350 J /Kg.K), which is available at 160 C through the shell side of the exchanger. the overal heat transfer coefficient U = 400 W/m^2. K . Ten tubes pass the water through the shell. Each tube is thin walled of diameter 25 mm. If the oil leaves the exchanger at 100 C . calculate : a) the oil flow rate? b) the rate of heat transfer? c) the maximum rate of heat transfer? d) the effectiveness?
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.
a shell and tube heat exchanger must be designed to heat 2.5 Kg / s of water from 15 C to 85 C. the heating is to be accomplished by passing hot engine oil ( Cp = 2350 J /Kg.K), which is available at 160 C through the shell side of the exchanger. the overal heat transfer coefficient U = 400 W/m^2. K . Ten tubes pass the water through the shell. Each tube is thin walled of diameter 25 mm. If the oil leaves the exchanger at 100 C . calculate :
a) the oil flow rate?
b) the rate of heat transfer?
c) the maximum rate of heat transfer?
d) the effectiveness?
e) the length of tubes ?
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