集中空调冷却水变流量节能研究
Energy saving effects of variable cooling water flow in central air conditioning systems
摘要：
结合重庆市某教学楼集中空调冷却水系统改造工程，基于空调负荷变化特性，分析了变流量对冷水机组和变频冷却水泵能耗的影响，计算了不同变流量控制方式的综合节能率。结果表明，变流量控制方式是影响冷却水变流量节能效果的关键可控要素，采用37 ℃冷凝器出水温度控制的综合节能率达25.3%。
关键词：集中空调,冷水机组,冷却水泵,变流量
Abstract：
With the retrofitting project of cooling water system of a teaching building in Chongqing, based on the load variation characteristics, analyses the effect of variable flow on energy consumption of water chillers and variable frequency cooling water pumps, and calculates the integrated energy saving rate of different control modes of cooling water flow. As a result, control mode of variable cooling water flow is the key controllable factor to energy saving effect, and the integrated energy saving rate of 37 ℃ condensing temperature control method is 25.3%.
Keywords:central air conditioning, water chiller, cooling water pump, variable flow rate