气体增压型复合空调机组研发及全年运行能效分析

Development of gas pressurized composite air-conditioning unit and annual operation energy efficiency analysis

针对数据中心机房全天候排热降温需求,提出融合蒸气压缩式制冷循环和气体增压分离式热管循环的气体增压型复合空调机组技术方案,设计额定制冷量为10 kW的复合空调样机,并在焓差试验室进行变工况性能试验。结果表明:当室内外温差大于20℃时,即可采用气体增压分离式热管循环替代常规蒸气压缩式制冷循环(两者制冷量相等),且节能率约为8%;机组的能效比EER与室内外温差近似呈线性趋势增长,当室内外温差为30℃时,其节能率达到70%;其全年能效比AEER比常规蒸气压缩式机房空调高40%。该技术为数据中心、信息基站等高发热量空间的低成本、高能效控温需求提供新的途径。

Aimed at the all-weather air conditioning of data room,one composite airconditioning unit which combines vapor compression refrigeration circulation with gas pressurized separation type heat pipe circulation is proposed.One composite air-conditioning prototype with cooling capacity of 10 kW is designed,and the performance test is carried out in the enthalpy method laboratory.The results show that when the temperature difference between indoor and outdoor reaches 20 ℃,the gas pressurized separation type heat pipe cycle can be used for the replacement of the conventional vapor compression refrigeration cycle as equal cooling capacity,and the energy-saving rate is about 8%;the energy efficiency ratio（EER）of the unit increases approximately linearly with the temperature difference between indoor and outdoor,and the energy-saving rate reaches 70% when the temperature difference between indoor and outdoor reaches 30 ℃;compared with the conventional vapor compression type air-conditioning unit in the data room,the annual energy efficiency ratio（AEER）of the pressurized composite air-conditioning unit is increased by 40%.This technology provides a new way for the low cost and temperature control of high energy efficiency for the high heating space,such as data center and information base station.