Numerical investigation of conjugate heat transfer and flow performance of a fin and tube heat exchanger with vortex generators

Shobhana Singh, Kim Sørensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

Vortex generator is considered as an effective device for augmentation of the thermal-hydraulic performance of a heat exchanger. The aim of present study is to examine the influence of vortex generators on a double fin and tube heat exchanger performance. Vortex generator of rectangular winglet type is chosen and investigated at different angles of attack 0 , ??10 and ??20 with the flow direction. Three-dimensional numerical model is developed and simulations are performed for a Reynolds number range 5000 Re 11000 taking conjugate heat transfer into account. The heat transfer and pressure loss characteristics are determined and analyzed for an in-line configuration of a fin and tube heat exchanger. In order to evaluate the enhancement in the performance on an equitable basis, the heat exchanger with plain fin surface is considered as a reference design. Results show that the angle of attack of a vortex generator has a significant impact on the volume goodness factor, and enhance the thermal performance of a fin and tube heat exchanger in comparison to the design with plain fin. The vortex generator at an angle of attack ??10 is found to perform superior over the Reynolds number range studied. At Re = 5000, the vortex generator with an angle of attack ??10 increases the volume goodness factor by 32% with respect to the baseline heat exchanger design.
Original languageEnglish
Title of host publicationProceedings of the 58th SIMS Conference on Simulation and Modelling, SIMS 2017
EditorsMagnus Thor Jonsson
Number of pages7
PublisherLinköping University Electronic Press
Publication dateSep 2017
Edition138
Pages13-19
ISBN (Print)978-91-7685-417-4
Publication statusPublished - Sep 2017
Event58th SIMS Conference on Simulation and Modelling, SIMS 2017 - Orkustofnun - National Energy Authority, Reykjavik, Iceland
Duration: 25 Sep 201727 Sep 2017

Conference

Conference58th SIMS Conference on Simulation and Modelling, SIMS 2017
LocationOrkustofnun - National Energy Authority
CountryIceland
CityReykjavik
Period25/09/201727/09/2017
SeriesLinköping Electronic Conference Proceedings
ISSN1650-3686

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