IJRME – Volume 2 Issue 4 Paper 6

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CFD ANALYSIS OF COUNTER FLOW HEAT EXCHANGER TO FIND BEST TWIST ANGLE FOR MAXIMUM HEAT TRANSFER

Author’s Name :  N Viswa Sai Ram | Srikanth Sudhani

Volume 02 Issue 04  Year 2015  ISSN No:  2349-3860  Page no: 20-23

12

Abstract:

Enhancing heat transfer surface are used in many engineering applications such as heat exchanger, air conditioning, chemical reactor and refrigeration systems, hence many techniques have been investigated on enhancement of heat transfer rate and decrease the size and cost of the involving equipment especially in heat exchangers. One of the most important techniques used are passive heat transfer technique. In this paper passive techniques are adopted by inserting twisted tapes. These techniques when adopted in Heat exchanger proved that the overall thermal performance improved significantly. By using numerical methods Ansys-CFD the results are found that the enhancement of heat transfer with twisted tape inserts as compared to plain tube varied from 10 to 15%. To enhance the thermal efficiency in heat exchanges and useful to designers implementing passive augmentation techniques in heat exchange by varying its twist angles to find enhancement at various twist angles to find maximum heat transfer rate at which particular angle

Key Words:

Heat Trasnsfer,Enhancement,CFD,Turbulance,Passive Method,Twist angle

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