公共机构夏季空调负荷特性与影响因素研究

Study on load characteristics and influencing factors of air conditioning in public institutions in summer

当前,公共机构能耗居高不下,其中夏季空调的制冷能耗占据了很大的比例。为了更好地了解公共机构夏季空调的负荷特性以及相关影响因素,对华北地区某办公建筑夏季空调系统运行情况进行了实际监测,分析了该系统冷负荷日、周及年变化特点,通过多项式拟合与正交试验的方法得出建筑冷负荷受室外干球温度的影响较大,建筑日总负荷受日平均温度的影响较大,建筑负荷特性影响因素的排序为:干球温度>室内人员在室率>相对湿度。

At present,the energy consumption of public institutions is high,among which the cooling energy consumption of air conditioning in summer occupies a large proportion.In order to better understand the load characteristics and related factors of air conditioning in public institutions in summer,this paper monitors the operation of air conditioning system in summer in a certain office building in north china,analyzes the characteristics of the cold load day,week and year change of the system,and concludes that for office buildings,it is necessary to carry out full investigation before the design of air conditioning system,especially the density of personnel,to avoid excessive design load,but low load rate in actual use,to increase initial investment and waste energy resources.By means of polynomial fitting and orthogonal test.Methods it was concluded that the cooling load of the building was greatly affected by the outdoor dry ball temperature,and the daily total load of the building was greatly affected by the daily average temperature.The order of the influencing factors of the building load characteristics was as follows:dry ball temperature>indoor room rate>relative humidity.This paper has certain guiding significance for the design,transformation and operation management of summer air conditioning system in public institutions.