Enhanced immersion two-phase liquid cooling thermal management for data center

Abstract

The Internet of Things, Machine Learning and Artificial Intelligence are driving rapid developments across most industries, requiring data centres and server racks to store and process data. Without proper thermal management, components can fail prematurely, leading to lower reliability and longer downtime. Submerged jet impingement and two-phase cooling have been studied and investigated as a possible means of electronics cooling. The study that will be presented will examine the effects of different jet array configurations with single, three, four and five holes in an array with different total and per-hole volumetric flow rates. The study will assess the impact of change in power settings of the heated impinged surface, the two settings being 14W and 75W. It will also study the effects of using different experimental fluids, both Novec 649 and Deionized Water (DI Water). The results of the study have shown that at 75W, certain configurations will not bring the temperature of the heated plate down. The temperature differences before and after are shown to vary based on the different configurations. The single-hole configuration is shown to have a higher heat transfer coefficient compared to the other configurations for most flow rates. The use of DI water as the experimental fluid was shown to provide larger temperature differences to the heated plate but had a lower Nusselt Number compared to Novec 649. It is recommended that more configurations be set up for future research and an increase in heater power be used in conjunction with Novec 649 as the experimental fluid, to create two-phase cooling.