Title

Thermal analysis of air-cooled electronic equipment

Abstract

Owing to the increasing miniaturization and number of high-power-dissipating components in electronic packages, proper thermal management has become of vital importance. Numerical simulations were carried for three block-type elements representing electronic components located on the bottom plate of a rectangular channel. The top plate of the channel was parametrically examined in order to assess the radiative heat-transfer component. The effects of the air flow rate in the channel and the spacing, geometry, and emissivity of the blocks were investigated. Two types of heat sources were considered: A uniform heat-generation rate in each block and a point heat-source at the center of each block. Reynolds numbers varying from 10 to 1000 and block length-to-spacing ratio varying from 1 to 3.7 were considered in this work. The results clearly indicate that, when the radiative heat-transfer component is neglected, 33% of the heat generated is conducted through the bottom substrate while the remaining 67% is convected to the cooling medium. However, when the radiative heat transfer is considered in the analysis, the radiant heat loss is estimated to range from 4 to 8%, at a Reynolds number of 500.

Publication Date

1-1-1992

Publication Title

Proceedings of the ASME Design Engineering Technical Conference

Volume

Part F168071-2

Number of Pages

517-526

Document Type

Article

Identifier

scopus

DOI Link

https://doi.org/10.1115/CIE1992-0061

Socpus ID

85104227101 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85104227101

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