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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 modified techniques are the new development directions of heat transfer enhancement. The appropriate twisted elliptical tube modification 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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