摘  要  根据空调变流量水系统末端定压差控制原理，结合水泵在相似工况下的运行，分析了定速泵并联运行、部分变频并
联运行、同步变频并联运行的情况，并进一步分析得到部分水泵变频可能只能实现局部并联，造成能源浪费。而在同步变频
时应考虑在适当的工况点调整运行水泵的数量,使水泵始终保证在高效率工况点运行,以实现节能的目的。
关键词  变流量水系统 相似工况 变频 节能
 
THE PUMPS OF AIR-CONDITIONING SYSTEM VARIABLE
FREQUENCY ANALYSIS
Li Baoru  Wang jilou
(Beijing University of Architecture and Civil Engineering ,Beijing 100044)
 
Abstract   According to the constant pressure difference control principle of the air conditioning variable water system
terminal, and pump's operating under the similar conditions, this paper analyzed the constant speed pump parallel
operation, the partial frequency conversion parallel operation, the synchronized frequency conversion parallel operation
situation, then further analysis obtained that the partial water pump frequency conversion possibly only to be able to
realize partial parallel, which creates the energy waste. But the synchronized frequency conversion should consider that
adjust the number of pump in the suitable operating point, so the pump would surely operate in the high efficiency
operating point, and realize the energy-saving goal.
Keywords   Variable water system  Similar conditions  Variable frequency  Energy-saving