Technical Brief

Enhancement of CPU Liquid Cooling Performance using hBN Nanofluids

[+] Author and Article Information
Ozgur Atik

Boğaziçi University, Department of Mechanical Engineering, İstanbul 34342, Turkey

Dr. Hakan Erturk

Boğaziçi University, Department of Mechanical Engineering, İstanbul 34342, Turkey

1Corresponding author.

ASME doi:10.1115/1.4042022 History: Received November 29, 2017; Revised November 11, 2018


Cooling performance enhancement of computer liquid cooling systems using hBN-water nanofluids are investigated experimentally. The particle volume fractions of 0.1-2% are considered at constant flow rates varying from 0.3-2 L/min for systems with two different cold plates. A commercial closed loop liquid cooling system is also tested to examine performance of hBN-water nanofluids at constant pumping power. It was observed that the maximum cooling enhancement is obtained with 2% particle volume fraction of hBN-water nanofluid in all experimental systems. Moreover, the enhancement rate depends on the flow rate and the cold plate design. The cooling performance increase for the commercial system is observed to be limited with the reduced flow rate at increasing particle volume fractions. Therefore, cold plates must be optimized to maximize the cooling capacity, considering the increasing viscosity and thermal conductivity of nanofluids.

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