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摘  要  根據空調變流量水系統末端定壓差控制原理，結合水泵在相似工況下的運行，分析了定速泵并聯(lián)運行、部分變頻并
聯(lián)運行、同步變頻并聯(lián)運行的情況，并進(jìn)一步分析得到部分水泵變頻可能只能實(shí)現局部并聯(lián)，造成能源浪費。而在同步變頻
時(shí)應考慮在適當的工況點(diǎn)調整運行水泵的數量,使水泵始終保證在高效率工況點(diǎn)運行,以實(shí)現節能的目的。
關(guān)鍵詞  變流量水系統 相似工況 變頻 節能
 
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