Can anyone kindly guide me through the design process of Air Fin Condenser and Evaporator and Shell and Tube Cascade Heat exchanger for refrigeration processes? I have all the design parameters (attached below) but I need to find the Heat Transfer Coefficient and the Area required for the Heat Transfer. I will be glad if u can suggest me any good text on the specific subject.
In ALL books about heat transfer by convection you will find the data you need.
What has to be considered is that convection coefficient between system and environment is for natural convection if fans are not used and that the internal coefficient has to be computed according to the fluid velocity. You may neglect the heat resistance of the tubing walls since the conductivity is high and the wall thickness low. If you aim at temperatures
Hi Dear
u can used the NTU method to design heat exchanger and u can find the heat transfer coefficient by using the forced convection equation for cross bundle of tubes
thanks
Heat exchangers are essential elements in refrigeration systems. In refrigeration circuits, during cooling heat exchangers are used as evaporator, to absorb energy from the refrigerant. ... In function of the heat exchanger constructive design: Coaxial coil heat exchanger. Finned tube heat exchanger.
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