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Experimental Investigation of Exergy & Energy Analysis of Double Pipe Heat Exchanger using Twisted Tape

Author(s):

Bhailal V. Bhuva , MERCHANT INSTITUTE OF TECHNOLOGY,GUJARAT; Sukritindra Soni, Merchant institute of Techonology

Keywords:

Entropy Generation, Exergy Loss, Double Pipe Heat Exchanger, Second Law, Simple Twisted Tape

Abstract

Energy saving aspects is very important in the design, construction and operation of industrial heat exchangers. Exergy analysis is the relatively recent method to identify the location of maximum exergy destruction so that necessary action can be taken to increase the performance of the thermal system. Many researchers have attempted to increase the effective contact surface area with fluid to increases the heat transfer rate, and to reduce the entropy generation, entropy generation number. Therefore energy saving aspects is very important in the design, construction and operation of the heat exchangers. For this reason, various active or passive methods have been sought to save energy by increasing the heat transfer coefficients in the cold and warm fluid sides in the heat exchangers. Twisted are best passive techniques in studied in literature. Hot water and cold water are used as working fluids. Here cold water are passed through tube side and hot fluid passing through annulus side. The test runs was done at cold water mass flow rates ranging between 0.034kg/s and 0.102 kg/s and hot water mass flow rate between 0.034kg/s and 0.102 kg/s respectively. The inlet hot water and inlet cold water temperatures are between 400C and 56 °C, and between 27 °C and 32 °C, respectively. The effects with simple twisted tape and without twist insert on both working fluids flowing through the heat exchanger on exergy analysis parameter like effectiveness, entropy generation rate, entropy generation number and exergy loss are discussed and also find the effect of energy analysis parameter like overall heat transfer coefficient, Nusselt number.

Other Details

Paper ID: IJSRDV3I41119
Published in: Volume : 3, Issue : 4
Publication Date: 01/07/2015
Page(s): 3305-3311

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