温湿度独立控制空调系统和常规空调系统的性能比较

Performance comparison between temperature and humidity independent control and conventional air conditioning systems

选择北京和广州相同的办公楼作为比较对象,常规空调系统采用典型的风机盘管+独立新风的形式。应用DeST软件计算了建筑全年逐时冷负荷,计算了两个系统的能效比EER(energy efficiency ratio)和能耗。结果表明,对于北京的办公建筑,温湿度独立控制空调系统全年能耗为14.75k Wh/m2,EER为4.5;常规空调系统全年能耗为18.63k Wh/m2,EER为3.6。对于广州的办公建筑,温湿度独立控制空调系统全年能耗为32.66k Wh/m2,EER为4.5;常规空调系统全年能耗为43.39k Wh/m2,EER为3.4。相比常规空调系统,温湿度独立控制空调系统的节能率在20%～30%。

Selects a typical office building located in Beijing and Guangzhou respectively as the comparison object.Conventional air conditioning system（CAS） adopts typical system of fan coil units plus dedicated outdoor air.Calculates the annual hourly cool load by DeST software,and calculates the EERs and energy consumption of the two systems.As a result,when the office building is located in Beijing,the annual energy consumption is 14.75 kWh per square metre,and the EER is 4.5 for temperature and humidity independent control air conditioning system（THICS）,while the annual energy consumption is 18.63 kWh per square metre and the EER is 3.6 for CAS.For that office building in Guangzhou,the corresponding value is 32.66 kWh per square metre and 4.5 for THICS,while 43.39 kWh per square metre and 3.4 for CAS.Comparing with CAS,the THICS can reduce energy consumption by 20% to 30%.