| 摘要: |
| 利用自然冷源可有效降低数据中心的冷却能耗，本文研发了一种由旋转气泵驱动的环路自然冷却机组。机组采用R22作为循环工质，在标准焓差室中搭建实验台。研究机组的性能及循环特性，并与液泵驱动环路热管机组进行比较。结果表明：随着室内外温差的增加，气泵机组制冷量与EER呈先增加后下降的趋势，功率始终呈下降趋势。其中，机组在室内外温差25 ℃时性能最佳，制冷量为17.7 kW，机组能效比（EER）为15.2，机组功率为1.16 kW，气泵功率为0.509 kW。而与液泵机组相比，当室内外温差为25 ℃时，气泵机组EER比液泵机组EER高25.5%；在室内外温差10 ℃时，气泵机组EER比液泵机组EER高104.7%。 |
| 关键词: 热管 冷却能力 旋转式气泵 数据中心 |
| DOI： |
| 投稿时间：2018-01-11 修订日期：2018-03-20
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| 基金项目:国家自然科学基金（51406002, 51776004）资助项目。 |
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| Working Characteristics of a Rotary Booster-driven Loop Cooling Unit |
| Li Shaocong,Ma Guoyuan,Xue Lianzheng,Zhou Feng |
| (College of Environmental and Energy Engineering, Beijing University of Technology) |
| Abstract: |
| Free cooling is widely applied in data centers as a promising technology for energy conservation. A loop cooling unit driven by a miniature rotary booster for free cooling was developed for a small data center. In this study, compared with air conditioners and pump-driven loop heat-pipe units, the booster-driven loop cooling unit consumed lower power and had a higher energy efficiency ratio (EER). An improved rotary booster with a small pressure ratio was adopted in the rotary booster-driven loop cooling unit. The results indicate that with the increase in the indoor and outdoor temperature difference (ΔT), the unit cooling capacity and EER first increased and then decreased. When ΔT was 25 ?C, the cooling capacity reached 17.7 kW, and the EER was 15.2. With the increase in ΔT, the power of the unit exhibited a downward trend all the time. When ΔT was 25 ?C, the power of the unit reached 1.16 kW. The thermal performance was compared with that of the pump-driven loop heat-pipe unit. When ΔT was 25 and 10 ?C, the EER values of the rotary booster-driven loop cooling unit were 25.5% and 104.7% higher than those of the pump-driven loop heat-pipe unit, respectively. |
| Key words: heat pipe cooling capacity rotary booster data center |
