Title :
Design considerations of high heat flux heat pipe evaporators
Author_Institution :
Thermacore Inc., Lancaster, PA, USA
Abstract :
A numerical model was developed to describe the liquid and vapor flows inside porous wicks in heat pipe evaporators. The evaporator design parameters, including pore radii distribution, wick permeability and thickness, were calculated for various heat flux conditions. The vapor fraction, defined as the percentage of wick volume occupied by the vapor, was found to be highly dependent on the pore radii distribution and critical in determining the heat flux limit of the evaporator. The model was compared to previous experiments and other models to verify its accuracy. It can be used for design of high heat flux heat pipes for cooling of high power electronics
Keywords :
cooling; design engineering; evaporation; heat pipes; permeability; thermal analysis; thermal management (packaging); design; evaporator design parameters; heat flux; heat flux conditions; heat flux limit; heat pipe evaporators; high power electronics cooling; liquid flow; numerical model; pore radii distribution; porous wicks; vapor flow; vapor fraction; wick permeability; wick thickness; wick volume; Electronics cooling; Heat pumps; Heat sinks; Heat transfer; Numerical models; Permeability; Powders; Power electronics; US Department of Defense; Water heating;
Conference_Titel :
Semiconductor Thermal Measurement and Management, 2001. Seventeenth Annual IEEE Symposium
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-6649-2
DOI :
10.1109/STHERM.2001.915179
