液冷数据中心的余热利用探索
Exploration on waste heat utilization in liquid-cooled data centers
摘要：
液冷技术已经成为高密度服务器散热的主流选择。对某液冷数据中心的二次侧冷却水工况进行了分析。通过采用热水型溴化锂吸收式制冷系统,夏季利用余热作为动力进行供冷,冬季借助板式换热器处理余热,将换热所得的二次水作为热源为周边区域供热。通过充分利用余热回收,把数据中心由全年热汇中心变成冷源中心和热源中心,为最终实现真正的零碳排放数据中心提供技术支撑。
Abstract：
Liquid cooling technology has become the mainstream choice for heat dissipation of high-density servers. This paper analyses the secondary-side cooling water conditions in a liquid-cooled data center. By adopting a hot water lithium bromide absorption refrigeration system, it utilizes waste heat as the power source for cooling in summer, and in winter, a plate heat exchanger is employed to process the waste heat and the exchanged secondary water is used as a heat source to provide heat for the surrounding areas. By fully utilizing waste heat recovery, the data center is transformed from a year-round heat sink center into a cold source center and a heat source center, providing a technical support for the ultimate realization of a truly zero-carbon emission data center.
Keywords:data center; liquid cooling; waste heat recovery; zero carbon; hot water lithium bromide absorption refrigerating system