Abonnement à la biblothèque: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

STUDIES ON NATURAL CONVECTION HEAT TRANSFER FROM THERMAL SOURCES ON A VERTICAL SURFACE

Get access (open in a dialog) DOI: 10.1615/IHTC8.2800
pages 1347-1352

Résumé

Two fundamental problems related to the cooling of multiple electronic components are addressed in this study. The wake temperature distribution produced by a horizontal line source on a vertical adiabatic surface is solved by a similarity technique. An apparatus was constructed and detailed temperature measurements were made in water. The profiles are as predicted, but the temperature levels are somewhat lower than expected.
In the second part of this work, an experimental study of the interaction of two heaters was carried out. Heat transfer coefficients were obtained for horizontal wide strips and horizontal cylinders (adjacent to or displaced from the surface) on a vertical adiabatic surface in both air and water. Velocities induced by the lower heater enhance the heat transfer from the upper heater; however, this effect is offset by preheating of the fluid. The results for air are generally in good agreement with a previous numerical solution. The water data display a more pronounced heat transfer enhancement of the lower heater than do the air data.