Investigation on Pulsating Heat Pipe (PHP) Heat Spreader Plate for Electronics Cooling

A Pulsating Heat Pipe (PHP) plate heat spreader was investigated as a high thermal performance alternative to a conventional conduction plate heat spreader. A 3U form factor card, i.e., 160 mm x 100 mm x 3.38 mm was selected for performance testing. The PHP heat spreader was additively manufactured...

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Bibliographic Details
Main Authors: Hota, Sai Kiran, Lee, Kuan-Lin, Hoeschele, Greg, Rokkam, Srujan
Format: Conference Proceeding
Language:English
Subjects:
Aluminum
electronics cooling
Fluids
Heat pipes
Heat spreader
Heating systems
pulsating heat pipe
Temperature
Thermal analysis
Thermal conductivity
thermal management
two-phase cooling
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Summary:A Pulsating Heat Pipe (PHP) plate heat spreader was investigated as a high thermal performance alternative to a conventional conduction plate heat spreader. A 3U form factor card, i.e., 160 mm x 100 mm x 3.38 mm was selected for performance testing. The PHP heat spreader was additively manufactured with aluminum and charged with propylene. From performance analysis, it was determined that the PHP had 100% higher thermal conductance compared to the conduction plate when the condenser (plate heat rejection) temperature was below 0 °C. The maximum variation in thermal conductance observed through repeatable experiments was less than 10% with 95% confidence level. The PHP was capable of transporting more than 220 W of heat without dry-out at these conditions. However, when the condenser was maintained at 20 °C, the thermal performance improvement of PHP was 45% more than the conduction plate.
ISSN:2577-1000