| 摘要: |
| 为了将气泵驱动冷却机组更好地应用于数据中心，本文对自行设计的气泵驱动冷却机组在北京地区某小型数据中心的运行性能进行研究，通过对其实际运行情况监测，分析了机组的工作特性，拟合出工作特性曲线。结果表明：机组换热量随室内外温差的增大而增大，当室内外温差为11℃时，换热量约为10.4 kW，室内外温差达到23 ℃时，换热量约为13.6 kW；气泵功率随室内外温差的增大而减小，当室内外温差为11、23 ℃时，气泵功率分别为1 300、810 W。当室外温度为﹣3.7 ℃，室内外温差为23 ℃时，机组的换热量为13.6 kW，EER可达10.40。当室外温度低于15 ℃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，与采用原空调散热相比全年节省电量6 842.24 kW?h，全年节能率约为25.78%。 |
| 关键词: 数据中心 气泵 自然冷却 能效比 |
| DOI： |
| 投稿时间：2018-05-08 修订日期：2018-07-10
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| 基金项目:国家重点研发计划(2016YFB0601601)和国家自然科学基金(51776004)资助项目。 |
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| Performance Analysis of Gas-Pump-Driven Free-cooling Unit in a Small Data Center |
| Xue Lianzheng,Ma Guoyuan,Zhou Feng,Li Fuping,Yan Xianghui,Jiang Mingjian |
| (College of Environmental and Energy Engineering, Beijing University of Technology) |
| Abstract: |
| The performance of gas-pump-driven free-cooling unit for heat dissipation was analyzed in a small data center in Beijing. The operating characteristics of the unit were fitted to its operating curve. The results show that the heat exchange capacity of the unit increases with the increase in the difference between the indoor and outdoor temperatures. When the indoor and outdoor temperature difference was 11 °C, the heat exchange capacity was approximately 10.4 kW, and when the difference reached 23 °C, the heat exchange capacity was approximately 13.6 kW. The difference between indoor and outdoor temperatures is the main factor affecting the heat exchange capacity of the unit. The power of the gas pump decreases with the increase in the temperature difference. For differences of 11 °C and 23 °C, the power of gas pump was 1300 W and 810 W, respectively. When the outdoor temperature was ?3.7 °C, the heat exchange capacity of the unit was 13.6 kW, and the EER reached 10.40. When the outdoor temperature was lower than 15 °C, the gas-pump-driven free-cooling unit could meet the cooling load of the data center. Compared with the original air conditioning, the electricity power was reduced by 6842.24 kW?h, and its annual energy saving rate was 25.78%. |
| Key words: data center gas pump free cooling energy efficiency ratio |
