University of Illinois Urbana-Champaign

Flow Efficiency in Multi-Louvered Fins

Zhang, X.; Tafti, D.K.

Content Files
TR197.pdf

Permalink

https://hdl.handle.net/2142/12050

Description

Title
Flow Efficiency in Multi-Louvered Fins
Author(s)
  • Zhang, X.
  • Tafti, D.K.
Issue Date
2002-04
Keyword(s)
  • louvered-fin heat exchangers
  • Reynolds numbers
Date of Ingest
2009-06-04T21:59:22Z
Abstract
The paper studies the effect of Reynolds number, fin pitch, louver thickness, and louver angle on flow efficiency in multi-louvered fins. Results show that flow efficiency is strongly dependent on geometrical parameters, especially at low Reynolds numbers. Flow efficiency increases with Reynolds number and louver angle, while decreasing with fin pitch and thickness ratio. A characteristic flow efficiency length scale ratio is identified based on geometrical and first-order hydrodynamic effects, which together with numerical results is used to develop a general correlation for flow efficiency. Comparisons show that the correlation represents more than 95% of numerical predictions within a 10% error band, and 80% of predictions within a 5% error band over a wide range of geometrical and hydrodynamic conditions.
Publisher
Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report Name or Number
Air Conditioning and Refrigeration Center TR-197
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/12050
Sponsor(s)/Grant Number(s)
Air Conditioning and Refrigeration Project 139

Owning Collections

Technical Reports - Air Conditioning and Refrigeration Center PRIMARY