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F.M. Naduvilakath-Mohammeda,b,c, R. Jenkinsb, G. Byrnea, A.J. Robinsona,b,c
Abstract
This case study presents an experimental investigation of closed loop liquid cooling of CPUs. The cooling system implements a pumped liquid supplying a cold plate fixed to the emulated CPU heat source and a remote Air-Cooled Heat Exchanger (ACHE). The Hybrid Liquid-Air (HLA) system employs 25% v/v Arteco-Freecor with distilled water solution as the primary coolant, and air as the secondary coolant. The thermal-hydraulic performance of the system is characterized over a range of operating conditions, including CPU heat loads (12 W/cm2 – 72 W/cm2), water volumetric flow rates (0.5 L/min – 8 L/min), and air velocities (1m/s – 3m/s). In order to provide a performance frame of reference, evaluations were also conducted with a conventional air-based fan- fin CPU cooling system.
…The results indicate that the HLA system significantly outperforms the traditional air-cooled fan-fin system, with much lower CPU temperatures and feasible power levels exceeding 300 W.
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a Department of Mechanical and Manufacturing Engineering, Parsons Building, Trinity College Dublin, D2, Ireland
b Nexalus Labs, Water St, Loughanalla, Castlepollard, Co Westmeath, Ireland
c CONNECT, Dunlop Oriel House, Trinity College Dublin, Ireland.
