Comparative CFD Analysis of Circular and Elliptical Twisted Tube and Shell Heat Exchanger |
Author(s): |
Anurag Agrawal , SSEC BHILAI INDIA; Sandeep Saha, SSEC BHILAI INDIA; Nilesh Kumar Sharma, SSEC BHILAI INDIA |
Keywords: |
CFD, Elliptical Twisted Tube, Heat Exchanger |
Abstract |
In various engineering applications such as heat exchanger, air conditioning, chemical reactors and refrigeration systems, heat transfer enhancement techniques are popularly used. This paper reports a multi-objective optimization of a shell and tube type heat exchanger with elliptical twisted tube geometry, which has been compared with cylindrical tube geometry. A series of experimental runs has been constructed with respect to constant mass flow rate 0.25kg/s of Cold water and varying mass flow rate of Hot water from 0.05, 0.15, 0.25, 0.35, 0.45kg/s to study the effect of geometrical and flow parameters on heat transfer using RNG k-ε turbulence model. It is found that twisted elliptical tube have higher heat transfer coefficient and pressure drop than the smooth cylindrical tube. This modiï¬ed techniques are the new development directions of heat transfer enhancement. The appropriate twisted elliptical tube modiï¬cation is necessary for heat transfer enhancement with pressure loss penalty at a reasonable level. |
Other Details |
Paper ID: IJSRDV5I41362 Published in: Volume : 5, Issue : 4 Publication Date: 01/07/2017 Page(s): 1119-1124 |
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