Title :
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
fDate :
6/1/1997 12:00:00 AM
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;
Journal_Title :
Components, Packaging, and Manufacturing Technology, Part A, IEEE Transactions on
