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采用室外空气干球温度与比焓作为风侧经济器使用与否的判定条件,对新风免费冷却节能状况进行分析,提出了新风免费冷却节能效果评价指标———新风免费冷却节能率。应用该指标分析了我国不同气候条件下6个典型城市的3种不同类型建筑新风免费冷却节能效果,结果表明,北方严寒及寒冷地区节能率较高,夏热冬冷及夏热冬暖地区次之,温和地区节能率较低。宾馆建筑全年新风免费冷却节能率低于同一地区办公建筑和商场建筑。
Adopting outdoor air dry bulb temperature and specific enthalpy as the judgment condition of whether the wind side economizer is used or not, the condition of free cooling energy saving in fresh air is analyzed, and the evaluation index of fresh air free cooling energy saving effect is put forward --- the free air cooling energy saving rate. By using this index, the effect of free-cooling energy saving of fresh air in three different types of buildings in six typical cities under different climatic conditions in China was analyzed. The results show that the energy-saving rate of fresh air in the cold and cold regions of northern China is higher, The mild energy saving rate is lower. Hotel building Year-round fresh air Free Cooling Energy-saving rate lower than the same area office buildings and shopping malls buildings.