“以泵代阀”末端系统的能耗分析与系统优化
Energy consumption analysis and system optimization of replacing control valves by frequency controlled pumps in terminal system
摘要：
以集中空调系统的新风空调机组采用“以泵代阀”调节方式为例，计算水泵出口分别采用电动蝶阀、旋启式止回阀和蝶式双瓣止回阀三种不同阀件下的水泵供冷季节的能耗量，分析和比较系统的特点和能耗，提出用电动蝶阀替代止回阀有利于减少水泵能耗的观点。
关键词：“以泵代阀”末端系统,电动蝶阀,止回阀,能耗比较
Abstract：
Taking a fresh air handling unit of central air conditioning system using replacing control valves by frequency controlled pumps as an example, calculates respective energy consumption of chilled water pump under the conditions of using electric butterfly valve, swing check valve and butterfly bivalve check valve at the outlet of chilled water pump. Analyses and compares the characteristics and energy consumption of the systems. Puts forward that replacing check valve by electric butterfly valve is in favour of decreasing energy consumption.
Keywords:replacingcontrolvalvebyfrequencycontrolledpumpinterminalsystem，electricbutterflyvalve,checkvalve,energyconsumptioncomparison