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Natural Convection in an Air-Filled Cubical Enclosure With a Protruding Heat Sink: Application to a Thermoelectric Refrigerator

[+] Author Affiliations
Israel Botello-Arredondo, Abel Hernandez-Guerrero, Cuauhtemoc Rubio-Arana

Universidad de Guanajuato, Salamanca, GTO, México

Marino Peña-Taveras

Universidad Autónoma de Santo Domingo, Santo Domingo, Dominican Republic

Victor Miranda-Razo

Mabe S.A. de C.V., Queretaro, México

Paper No. IMECE2009-11271, pp. 779-786; 8 pages
doi:10.1115/IMECE2009-11271
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4382-6 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

The present study evaluates the effects of a protruding heat sink located on one of the vertical walls of a cubic cavity, with a free convective laminar regimen. The best of three locations for the heat sink will be determined with the analysis of the velocity and temperature fields in the cavity. An optimal operation condition is required since the cavity will contain medical products with a specific temperature range. Three different locations for the heat sink, (in the +Y direction), are to be studied: 1/3 H, 1/2 H and 2/3 H, where H is the height of the cavity, for different values of Rayleigh Number 103 <Ra<106 . The heat exchange occurs between the heat sink and the isothermal walls. The results obtained show that it is recommended to place the heat sink at the position H/2. This configuration presented the best behavior of the fluid, dynamically and thermally. The results will be used for a further and more completed numerical analysis, and to determine the thermoelectric refrigerator parameters for a later experimental study with a prototype.

Copyright © 2009 by ASME

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