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A Study of the Application of Vortex Generators to Enhance the Air-Side Performance of Heat Exchangers

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PDF TR214.pdf (410KB) ACRC Technical Report 214 PDF
Title: A Study of the Application of Vortex Generators to Enhance the Air-Side Performance of Heat Exchangers
Author(s): Bull, B.R.; Jacobi, A.M.
Subject(s): vortex generators air-side thermal performance
Abstract: The effect of longitudinal vortex generation on heat transfer is evaluated for a full scale plain fin-and-tube compact heat exchanger operating in both dry and wet conditions. The heat exchanger tested is comparable to an evaporator in a residential air-conditioning system. For this study the baseline performance of the heat exchanger is determined then the heat exchanger is modified with the addition of 2100 delta-wing vortex generators. The performance is determined by a volume goodness factor for the dry operating conditions and the overall enthalpy transfer coefficient for wet operating conditions. A 10% improvement in the volume goodness factor was recorded for the dry tests and the wet tests showed an overall reduction in the overall enthalpy transfer coefficient. A comparison was then made using j and f correlations for other enhanced surfaces. From these tests the j/f value for the vortex generator enhanced surface is shown to be comparable to the other enhanced surfaces.
Issue Date: 2003-05
Publisher: Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report: Air Conditioning and Refrigeration Center TR-214
Genre: Technical Report
Type: Text
Language: English
Sponsor: Air Conditioning and Refrigeration Project 121
Date Available in IDEALS: 2009-06-12

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