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Performance analysis and optimization of free cooling strategies for a liquid-cooled data center

Building Simulation 2023年第8期16卷 1317-1330页

作者： Weinan Zhou Qin Sun Weimin Luo Wei Xiao Pengfei Cui Wei Wu Kaijun Dong Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhouChina University of Chinese Academy of Sciences BeijingChina Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development GuangzhouChina Guangdong Fushengda Intelligent Technology Co. Ltd.Dongguan 523770China Guangzhou Goaland Energy Conservation Tech.Co. Ltd.Guangzhou 510663China School of Energy and Environment City University of Hong KongHong KongChina

The increasing power density of IT electronics and the enormous energy consumption of data centers lead to the urgent demand for efficient cooling *** to its efficiency and safety,liquid-cooled heat sink technology may gradually replace air-cooled technology over *** the ambient or higher water supply temperature,the liquid-cooled technology shortens the operating time of the chiller and improves its coefficient of performance,while the pump power consumption may increase for satisfying the constant cooling ***,it is significant to study the optimal water supply temperature to achieve energy-efficient operation of data centers.A virtual 30.1 kW data center is considered as the case,the liquid-cooled system is constructed with a combination of innovative manifold microchannel heat sink with oblique fins and indirect evaporative cooling technology to minimize energy consumption.A hybrid thermal management model integrating the heat dissipation model and the power consumption model is established by TRNSYS and FLUENT *** the highest chip-safe operating temperature premise,the energy performance is analyzed under various water supply temperatures in *** result shows that only 21.5-hour mechanical cooling is needed with the 30℃server inlet temperature throughout the *** the minimized power consumption occurs with the constant 29℃server inlet ***,the temperature adaptive control strategy(TACS)is adopted to test the cooling system power consumption under different regulation frequencies,and the by-week TACS can achieve another 11.5%energy saving than the minimum power consumption of the constant temperature control strategy.

关键词： data center liquid cooling system manifold microchannel heat sink indirect evaporative cooling control strategy

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