Analysis and optimization of a natural draft heat sink system

Author

Fisher, Timothy S. ; Torrance, Kenneth E. ; Sikka, Kamal K.

Author_Institution

Sibley Sch. of Mech. & Aerosp. Eng., Cornell Univ., Ithaca, NY, USA

Volume

20

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

111

Lastpage

119

Abstract

An analytical solution for a system consisting of a vertical, parallel-plate, isothermal heat sink, and a chimney is presented. The result is applied to problems in which the size of the overall system is constrained. A ridge of maximum total heat transfer is observed with respect to the plate spacing and heat-sink height. The ridge suggests that heat-sink height may be reduced without diminishing the thermal performance for natural draft cooling. The flow characteristics of optimal systems reveal that systems with and without chimneys dissipate maximum heat when the velocity profiles within the heat sink are fully developed and developing, respectively

Keywords

cooling; flow; heat sinks; natural convection; optimisation; chimney effect; flow; heat dissipation; heat transfer; natural draft cooling; optimization; velocity profile; vertical parallel-plate isothermal heat sink; Acceleration; Cooling; Electronic equipment; Electronic packaging thermal management; Electronics packaging; Heat sinks; Heat transfer; Isothermal processes; Temperature; Thermal conductivity;

fLanguage

English

Journal_Title

Components, Packaging, and Manufacturing Technology, Part A, IEEE Transactions on

Publisher

ieee

ISSN

1070-9886

Type

jour

DOI

10.1109/95.588562

Filename

588562