| 摘要: |
| 当气温较低时，泵驱动两相冷却机组较之传统的蒸气压缩式空调能耗更低，EER更高，在数据中心节能降耗方面具有很大的应用潜力。但粗糙的控制策略不仅阻碍了冷却机组性能的提高，还严重影响了室内温控精度，对其实际应用极为不利。为了使其更好的应用于小型数据中心，本文研制了相应的控制系统，研究了其在某小型数据中心中实际应用时的运行性能，拟合了换热特性曲线，并进行节能性分析。结果表明：当室内温度设定为22 ℃、室外温度低于10 ℃时，采用此机组对数据中心机房进行散热能够满足室内负荷要求，与采用空调散热相比节省电能至少26.77%，具有良好的节能效果。 |
| 关键词: 空调 节能 数据中心 泵驱动 自然冷却 |
| DOI： |
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| 基金项目:国家自然科学基金（51376010、51406002）资助项目。 |
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| Experimental Investigation on a Pump-driven Two Phase Cooling Unit and Its Energy Saving Effect |
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Wang Xuan, Ma Guoyuan, Zhou Feng
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| (Beijing University of Technology) |
| Abstract: |
| Compared with the traditional vapor compression air conditioner, the pump-driven two phase cooling unit has a great potential in energy saving of data centers for it consumes less power and has a higher energy efficiency ratio when air temperature is low. However, insufficient control strategies not only hinder the improvement of performance, but also influence the accuracy of indoor temperature controlling, which limits the practical application. For a better application on small data centers, this paper designs a control system for the pump-driven two phase cooling unit, and studies its operating performance using in a small data center. This paper also fits the operating characteristic curves and makes an energy saving analysis. The results show that when the set point of indoor temperature is 22 ℃, the pump-driven system can fit the heat load well and get a good energy saving effect under the condition of an outdoor temperature of 10 ℃ or lower, and it can achieve at least a ratio of 26.77% on energy saving comparing with the existing air conditioner of the data center. |
| Key words: air conditioning energy saving data center pump-driven natural cooling |
