Impact of leading edge delta-wing vortex generators on the thermal performance of a flat tube, louvered-fin compact heat exchanger.
Author(s) : JOARDAR A., JACOBI A. M.
Type of article: Article
Summary
The effectiveness of delta-wing type vortex generators is experimentally evaluated by full-scale wind-tunnel testing of a compact heat exchanger typical to those used in automotive systems. The mechanisms important to vortex enhancement methods are discussed, and a basis for selecting a delta-wing design as a vortex generator is established. The heat transfer and pressure drop performance are assessed at full scale under both dry- and wet-surface conditions for a louvered-fin baseline and for a vortex-enhanced louvered-fin heat exchanger. An average heat transfer increase over the baseline case of 21% for dry conditions and 23.4% for wet conditions was achieved with a pressure drop penalty smaller than 7%. Vortex generation is proven to provide an improved thermal-hydraulic performance in compact heat exchangers for automotive systems.
Details
- Original title: Impact of leading edge delta-wing vortex generators on the thermal performance of a flat tube, louvered-fin compact heat exchanger.
- Record ID : 2006-0954
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 48 - n. 8
- Publication date: 2005/04
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Indexing
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Themes:
Heat transfer;
Mobile air conditioning - Keywords: Generator; Car; Louvre; Vortex; Tube; Heat transfer; Expérimentation; Air conditioning; Heat exchanger; Pressure drop
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