Nithya, M (2024) Optimizing thermal efficiency: Advancements in flat plate heat exchanger performance through baffle integration. Optimizing thermal efficiency: Advancements in flat plate heat exchanger performance through baffle integration.

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Abstract

Compact heat exchangers have been gaining popularity in many industrial applications. Various types of passive
turbulising structures such as corrugations, protrusions and ribs are introduced in the flow path to increase the
effective heat transfer area and the level of turbulence in the flow path. This study investigates the impact of
introduction of baffles on the performance of PHEs in terms of flow characteristics, pressure drop, and heat
transfer. Two distinct types of baffle structures, namely wedge and aerofoil configurations, were introduced at
varying numbers - 1, 3, and 5. An extensive experimentation is conducted for a FPHE in a thermal power plant of
500 × 2 MW and various flow and thermal parameters are measured. Computational Fluid Dynamics is utilized
in this study to find the optimum baffle configuration. A detailed validation study is executed to obtain the
correct computational algorithm, that is the right mesh count, optimum turbulence model, and precise numerical
algorithm by comparing the numerical results with the available experimental results. Wedge- type baffles create
increased turbulence and pressure drop, while aerofoil-type baffles minimize stagnation and exhibit lower
pressure drop. Both baffle configurations lead to a substantial increase in heat transfer, with the 5-wedge-baffle
setup showing the highest up to a 55% enhancement of Nusselt number. The Performance Evaluation Criterion
(PEC) of wedge and aerofoil type is about 1.24 to 1.3 and 1.22 to 1.24 to that of conventional one respectivel

Item Type: Article
Uncontrolled Keywords: Plate heat exchanger Computational fluid dynamics Baffle Power plant Thermal performanc
Divisions: PSG College of Arts and Science > Department of Mathematics
Depositing User: Mr Team Mosys
Date Deposited: 23 Sep 2024 09:10
Last Modified: 23 Sep 2024 09:10
URI: https://ir.psgcas.ac.in/id/eprint/2274

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