A double tube heat exchanger is made of copper (k = 380 W / m. ° C). Inner diameter of inner tube Di = 1.2 cm, outer its diameter is D0 = 1.6 cm and the diameter of the outer pipe is 3.0 cm. Convection heat transfer coefficient on the inner surface of the pipe high = 700 W / m2 . ° C and the heat transfer coefficient on the outer surface h0 = 1400 W / m2 . ° C. Pipe side contamination factor Rf, i = 0.0005 m2 . ° C / W and fouling factor Rf on the body side, 0 = 0.0002 m2 . ° C / W According to the example; Calculate the thermal resistance of the heat exchanger per unit length.
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 double tube heat exchanger is made of copper (k = 380 W / m. ° C). Inner diameter of inner tube Di = 1.2 cm, outer
its diameter is D0 = 1.6 cm and the diameter of the outer pipe is 3.0 cm. Convection heat transfer coefficient on the inner surface of the pipe
high = 700 W / m2
. ° C and the heat transfer coefficient on the outer surface h0 = 1400 W / m2
. ° C. Pipe side
contamination factor Rf, i = 0.0005 m2
. ° C / W and fouling factor Rf on the body side, 0 = 0.0002 m2
. ° C / W
According to the example; Calculate the thermal resistance of the heat exchanger per unit length.
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