集中供冷系统在广州地铁二号线的应用
Application of central cooling system to Guangzhou Metro Line 2
摘要：
广州地铁二号线15个地下车站由4个集中冷站提供空调冷水，集中供冷系统由三部分组成，采用大温差供冷(供回水温度7 ℃/15 ℃)，二次冷水泵采用变频控制。介绍了EMCS系统实现的功能及运行模式。
关键词：地铁,集中供冷系统,大温差,二次冷水泵,变频,EMCS
Abstract：
Four central cooling stations supply chilled water for fifteen underground stations. The system consists of three parts, and supply and return water temperature is 7 ℃/15 ℃ and realizes cooling with large temperature difference, and frequency control on the secondary chilled water pumps is adopted. Presents functions and running modes of EMCS.
Keywords:underground railway, central cooling system, large temperature difference, secondary chilled water pump, variable frequency, electrical and mechanical control system