Effect of surface radiation on natural convection air cooling of discrete heaters in a vertical enclosure

C. J. Ho, J. Y. Chang

Research output: Contribution to journalArticlepeer-review

Abstract

This article presents a numerical study concerning effect of surface radiation on natural convection cooling of four discrete iso-flux heaters flush-mounted on a vertical wall of an air-filled (Pr=0.72) rectangular enclosure. Numerical simulations via a finite difference method have been undertaken to examine parametric effects of modified Rayleigh number, heater emissivity, adiabatic surface emissivity, and a radiation parameter on the role played by surface radiation in heat dissipation from the discrete heaters in an enclosure of aspect ratio 10. Results demonstrate that surface radiation can be a significant cooling mechanism of the enclosed discrete heaters and its effect is a function of modified Rayleigh number, the heater emissivity as well as the radiation parameter.

Original languageEnglish
Pages (from-to)27-32
Number of pages6
JournalWarme- und Stoffubertragung Zeitschrift
Volume30
Issue number1
Publication statusPublished - 1995 Jan 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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