基于安全与高效的空调水循环泵选型方法与控制策略浅析

作者:刘新民
单位:上海润风智能科技有限公司
摘要:基于安全运行、服务保障和低碳节能的诉求,对空调冷水系统中冷水循环泵的不同设计理念和控制策略进行了比较分析,并对制冷站内并联运行的冷水泵设计选型和控制策略提出了商榷和探讨。分别从暖通空调和自动控制的不同专业角度,给出了多台相同性能水泵并联运行的安全保障技术措施。在对比分析冷源侧供回水总管压差和用冷侧最不利末端压差2种控制方案之后,介绍了1种多末端分布式压差控制解决方法,可供设计师参考。
关键词:冷水泵空调冷水系统并联运行压差控制集中式控制分布式控制
作者简介:刘新民,男,1951年生,大学,高级工程师361006福建省厦门市湖里区长乐路350号闽南古镇A部5005单元E-mail:13599519774@139.com;
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Selection methods and control strategies of air conditioning water circulation pumps based on safety and high efficiency
Liu Xinmin
(Shanghai Runfeng Intelligent Technology Co., Ltd.)
Abstract: Based on the demands of safe operation, service guarantee and low carbon energy saving, the different design concepts and control strategies of chilled water circulation pumps in air conditioning chilled water systems are compared and analysed, and the design selection and control strategies of chilled water pumps running in parallel in refrigeration stations are debated and discussed. From the perspective of different specialties of HVAC and automatic control, the security technical measures for the parallel operation of multiple pumps with the same performance are given. After comparing and analysing the control strategies of supply and return main pipe differential pressure on the cold source side and the most unfavorable terminal differential pressure on the cold side, a multi-terminal distributed differential pressure control method is presented, which can be used as a reference for designers.
Keywords: chilled water pump; air conditioning chilled water system; parallel operation; differential pressure control; centralized control; distributed control;
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