数据中心热工环境评价指标综述

Evaluation Index of Thermal Environment in Data Center: a Review

数据中心热工环境的评价指标可以判断数据中心设计运行优劣,为数据中心节能改造提供有力依据。总结了各类数据中心热工环境的评价指标。详细阐述了各指标的物理内涵和侧重点,多个指标结合可以完整评价一个数据中心的热工性能,包括机房用电、机柜散热、热点、冷量分配等情况。结合各指标评价数据中心的现实意义:①作为数据中心运行的评价标准,判断机房能耗和热环境的优劣;②根据各个评价指标来决定使用何种机房节能技术改善机房热工环境,机房节能改造更有针对性和有效性。进一步把不同的评价指标分为温度指标和能耗指标,指出在数据中心中温度指标的优先级应高于能耗指标。

Evaluation index of data center judges the operation of data center and provides strong evidence for energy conservation transformation of data center. All kinds of evaluation index of data center thermal environment are summarized. Each index has its specific physical intention and emphasis, and the combination use of these index can evaluate the whole data center in both energy and temperature aspect,including power utilization, heat dissipation of racks, hot spots and cooling distribution. The practical significance of the index is to act as evaluation criterion of data center operation and to help people to decide what energy-conservation transformation technology is suitable for a specific data center. Index are categorized into temperature index and energy index, and for special security reasons in data center, temperature index are more crucial than energy index.