Journal ArticleDOI
Investigation of Vortex Generator Enhanced Double-Fin and Tube Heat Exchanger
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TLDR
In this paper, a numerical analysis of conjugate heat transfer and fluid flow in vortex generator (VG) enhanced double-fin and tube heat exchanger is carried out to improve the heat transfer performance.Abstract:
In the present work, a numerical analysis of conjugate heat transfer and fluid flow in vortex generator (VG) enhanced double-fin and tube heat exchanger is carried out. The enhanced design aims to improve the heat transfer performance of a conventional double-fin and tube heat exchanger for waste heat recovery applications. A three-dimensional (3D) numerical model is developed using ANSYS cfx to simulate fluid flow and conjugate heat transfer process. Numerical simulations with rectangular winglet vortex generators (RWVGs) at five different angles of attack (−20deg≤α≤20deg) are performed for the Reynolds number range of 5000≤Re≤11,000. Salient performance characteristics are analyzed in addition to the temperature distribution and flow fields. Based on the numerical results, it is concluded that the overall performance of the double-fin and tube heat exchanger can be improved by 27–91% by employing RWVGs at α=−20deg for the range of Reynolds number investigated. The study provides useful design information and necessary performance data that can be adopted for the design development of the heat exchanger at a lower manufacturing cost.read more
Citations
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Journal ArticleDOI
Thermal-hydraulic performance and optimization of tube ellipticity in fin-and-tube heat exchanger
Zhu Hua,Zhuo Yang,Tariq Amin Khan,Wei Li,Sun Zhi-jian,Du Jincai,Zhang Zheng-jiang,Jianxin Zhou +7 more
TL;DR: In this article, numerical simulation and optimization of variable tube ellipticity is studied using three-dimensional numerical analysis and a multi-objective genetic algorithm (MOGA) with surrogate modeling.
Journal ArticleDOI
Air side heat transfer enhancement using radiantly arranged winglets in fin-and-tube heat exchanger
TL;DR: In this paper, the authors proposed to arrange the winglets radiantly around the tubes on the fin to enhance the airside heat transfer in fin-and-tube heat exchanger.
Journal ArticleDOI
Numerical study of heat transfer, flow fields, turbulent length scales, and anisotropy in corrugated heat exchanger channels
TL;DR: In this article , a large eddy simulation (LES) of convectively dominated heat transfer in a corrugated heat exchanger channel using the computational fluid dynamics toolbox, OpenFOAM, is presented.
Journal ArticleDOI
Performance Enhancement of Finned Tube Heat Exchanger using New Vortex Generator
S. Rai,Shobhana Singh +1 more
TL;DR: In this paper , the authors investigated a performance enhancement in an H-shaped finned tube heat exchanger using a new design of winglet vortex generator, which has an aerodynamic shape that reduces the pressure drop and enhances the heat transfer.
References
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