杭州某近零能耗居住建筑空调形式对比

Comparison of air conditioning forms of a nearly zero energy residential building in Hangzhou

暖通空调系统能耗约占建筑总能耗的50%,相比照明等其他建筑能耗具有较大的节能潜力。本文以杭州某近零能耗居住建筑为基础,运用DesignBuilder建立了3种适用于居住建筑的空调系统模型——分体空调+独立新风系统、多联机+独立新风系统及热泵型新风环境控制一体机系统,对比分析了其全年空调运行能耗。选取热泵型新风环境控制一体机系统进行了能耗实测对比,验证了模型的准确性。同时以全寿命周期成本为经济性指标,比较了3种空调系统的经济效益,为夏热冬冷地区近零能耗居住建筑空调系统形式的选择提供参考。

The energy consumption of HVAC system accounts for about 50%of the total building energy consumption,and has greater energy saving potential compared with other building energy consumption such as lighting.Based on a nearly zero energy residential building in Hangzhou,this paper uses the DesignBuilder software to establish three air conditioning system models suitable for residential buildings,namely,the split air conditioning and independent outdoor air system,the multi-connection unit and independent outdoor air system,and the integrated heat pump environment control unit with outdoor air(IEU),and compares and analyses their annual air conditioning operating energy consumption.The IEU system is selected for comparison of measured energy consumption,to verify the accuracy of the model.At the same time,the economic benefits of the three air conditioning systems are compared with the whole life cycle cost as an economic index,which provides a reference for the selection of air conditioning system forms for nearly zero energy residential buildings in hot summer and cold winter zone.