设定参数对空调系统能耗的影响

 选择位于深圳的一栋小面积办公建筑为例,建立了建筑空调系统的物理和数学模型,基于EES 和Matlab 软件计算模拟,研究了空调系统的室内设定温度、送风温差、冷冻水和冷却水温差参数对空调系统能效比(EER)、制冷系数(COP)、输送效率和功耗等指标的影响。结果表明,室内设定温度每升高1℃,空调冷负荷减少5.6%,COP 和EER 分别升高7.2%和4.75%;送风温度每升高1℃,冷负荷下降4%,COP 和EER 分别降低5.2%和4.64%,以设备总功耗为单一指标,送风温差9.5℃为最佳值;冷冻水温差每升高1℃,冷冻水输送系数升高7.85%;冷却水温差每升高1℃,冷却水输送系数升高8.68%。该结果对空调设计和施工具有指导意义。

Effects of parameters setup on energy consumption of air conditioning systems

An office building in Shenzhen was selected as an example to study the effects of indoor temperature setup, air supply temperature difference, cold and cooling water temperature difference on energy consumption of air conditioning systems, based on the established physical and mathematical model. The results show that indoor temperature setup has relatively large influence on the air conditioning load and energy consumption. With indoor temperature setup increasing by 1℃, the air conditioning load decreases by 5.6%, and Coefficient of Performance (COP) and Energy Efficiency Ratio (EER) increase by 7.2% and 4.75% . With air supply temperature difference increasing by 1℃, the air conditioning load decreases by 4%, and COP and EER decrease by 5.2% and 4.64%. With cold water temperature difference increasing by 1℃, the cold water transfer factor increases by 7.85%. With cooling water temperature difference increasing by 1℃, the cooling water transfer factor increases by 8.68%.