A double tube heat exchanger is made of copper (k=380 W/m.°C). Inner diameter of inner tube Di=1.2 cm, outer diameter D0=1.6 cm and the diameter of the outer tube is 3.0 cm. Convection heat transfer coefficient on the inner surface of the pipe hi=700 W/m2 .°C and the heat transfer coefficient on the outer surface h0= 1400 W/m2 .°C. on the pipe side contamination factor Rf,i=0.0005 m2 .°C/W and the contamination factor on the body side Rf,0 = 0.0002 m2 .°C/W as it is; a) The thermal resistance of the heat exchanger per unit length, b) Total heat transfer coefficients (U0 and Ui) taking into account the inner and outer surface areas of the pipe calculate.
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 diameter D0=1.6 cm and the diameter of the outer tube is 3.0 cm. Convection heat transfer coefficient on the inner surface of the pipe hi=700 W/m2 .°C and the heat transfer coefficient on the outer surface h0= 1400 W/m2 .°C. on the pipe side contamination factor Rf,i=0.0005 m2 .°C/W and the contamination factor on the body side Rf,0 = 0.0002 m2 .°C/W as it is; a) The thermal resistance of the heat exchanger per unit length, b) Total heat transfer coefficients (U0 and Ui) taking into account the inner and outer surface areas of the pipe calculate.
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