既有公共建筑群冷热源动力中心循环水系统运行状况分析

Investigation and Analysis of Operation Condition of Circulating Water System in a Public Building Group

以既有公共建筑体量不断增长的现状为背景,通过广泛调研运营项目,选定了体量较大、建设年代十年左右、有专业运行管理单位的西安某建筑群空调水系统为研究对象。通过冬季、夏季运行模式的调查以及运行数据整理,发现该建筑群系统在冬、夏工况下普遍存在"大流量、小温差"的现象。经过分析,笔者总结出设计功能和实际使用模式的偏差、水泵长期工频运行、单体建筑入口缺少平衡阀这3点是导致上述现象的原因,并给出针对性建议。

In the background of the current situation of increasing volume of public buildings,through extensive research of the project and taking the air conditioning water system of a building in Xi'an as a research object.The building which has the characteristics of large volume,ten years of construction,and professional operation management units.Through the investigation of operation mode in winter and summer and the operation data sorting,it is found that there is a general phenomenon of"large flow and small temperature difference"under the working conditions of winter and summer.After analysis,the author summarizes the 3 reasons leading to the above phenomenon and gives some specific suggestions.And the 3 reasons are the deviations from design functions and actual use patterns,run at a fixed frequency for a long time of the pumps,and lack of balancing valves at the entrance of single building.