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The IUP Journal of Mechanical Engineering

Entransy Dissipation Analysis of the Data of Halkarni et al.+ on the Effect of Random Packing Inside Heat Exchangers

Article Details

Pub. Date	: Nov, 2022
Product Name	: The IUP Journal of Marketing Management
Product Type	: Article
Product Code	: IJMM011122
Author Name	: Ankur Geete
Availability	: YES
Subject/Domain	: Marketing
Download Format	: PDF Format
No. of Pages	: 19

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Abstract

Entransy dissipation analysis has been applied to the published results of Halkarni et al. (2018) by considering the flow rates and temperatures of hot and cold fluids to determine whether it leads to improved performance of the heat exchanger. Rates of entransy dissipation, entransy dissipation-based thermal resistances and entransy dissipation numbers have been determined at unchanged conditions. Based on the analysis, the significance of entransy concept has been discussed, which can be implemented for thermal performance investigation of various heat exchangers. The entransy dissipation analysis suggests that utmost effectiveness (0.38) for heat exchanger is at the lowest rate of entransy dissipation (73.5 kJ-K/s) with least thermal resistance (9.585 K-s/kJ) and with smallest dissipation number (0.67). It is well known that for a heat exchanger, the effectiveness should be highest (0.38) but rate of entransy dissipation (73.5 kW-K) should be as low as achievable like exergy destruction rate (0.23 kW) with the conditions of low flow rates of fluids and smaller ball diameter. Same results have been received with different parameters in the previously published paper as the glass ball of 4 mm diameter showed excellent performance. Hence, a comparative analyses shows that the entransy concept can safely be recommended to evaluate the thermal performance of various heat exchangers.

Introduction

The entransy concept was introduced in 2003, which is the product of heat and temperature, but this heat is stored heat without work transfer. Entransy has also been explained as heat transport potential capacity that is a thermo-physical quantity and it is also known as heat transfer ability (Guo et al., 2009; Chen et al., 2013; 2019;