The effect of a metal plate barrier with holes blocking channel in the forced convection of rectangular modules

✍ Scribed by Masao Fujii; Toru Sawai

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 903 KB
• Volume: 40
• Category: Article
• ISSN: 1099-2871
• DOI: 10.1002/htj.20348

✦ Synopsis

Abstract

The experimental work reported here has provided an analysis of the effect of a perforated barrier, fully spanning the flow passage upstream of a pair of modules in a duct, on heat transfer and pressure drop characteristics of heated, rectangular modules that are commonly encountered in electronic equipment.

The barrier has been shown to be an effective means towards providing heat transfer enhancement. Heat transfer was increased with increasing barrier hole diameter d, and decreasing barrier porosity σ and module‐barrier distance L. The enhancing effect of the barrier was found to change dramatically at L/d = 3.5 and 18. Experimental data on heat transfer coefficients were correlated as a function of L/d, σ, and Reynolds number.

The pressure loss coefficient of the barrier is influenced by porosity σ, and is insensitive to the other factors experimentally investigated. The average pressure loss coefficient was correlated as a function of σ. © 2011 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley Online Library (wileyonlinelibrary.com/journal/htj). DOI 10.1002/htj.20348