寒冷地区集中空调系统新风机组防冻措施  

Anti-freezing measures of fresh air unit of central air-conditioning in cold area

作　　者：郭海丰[1] 王思平[1] 杜艳新 王举坤 李殊凡 石功涛 

机构地区：[1]沈阳建筑工程学院市政与环境工程学院,辽宁沈阳110168 [2]沈阳华夏设计公司,辽宁沈阳110003 [3]辽宁省规划设计院,辽宁沈阳110003 [4]锦州市建筑设计研究院,辽宁锦州121000 [5]大连市城市建设委员会,辽宁大连116033

出　　处：《沈阳建筑工程学院学报（自然科学版）》2003年第3期218-220,共3页Journal of Shenyang Architectural and Civil Engineering University(Nature Science)

基　　金：辽宁省自然科学技术基金资助项目(2001101013)

摘　　要：介绍了经常发生在我国寒冷地区集中空调新风机组中加热器冻坏的事故原因,分析了加热器被冻坏是由于新风机组加热盘管内流体凝固时体积膨胀所造成.阐述了采用特殊流体作为新风机组的工质,保证新风机组盘管中的水流速.提出采用风机、循环泵和电动保温阀连锁、增设电加热器、加设值班风机等设施防止新风加热器冻坏的方法,并指出了各种解决方法的弊端,提出了在电动保温阀和新风机组之间的风管道底部设置旁通管和电动阀门,以及将电动保温阀与电动阀连锁来解决防冻的新思路.叙述了新方法的基本原理.The causes of frozen fresh airheater in fresh air handling unit in north area of our country are introduced. Several existing antifreezing measures are discussed, such as using special liquid as the work medium, keeping the water flowing through the heater in a high speed, adopting the fresh air fan, circulating pump and the electric insulating valve interlock, adding an electric heater and a dutyfan, and etc. The defects of these measures are pointed out and the solution to the problems are proposed, which is to install a section duct and a solenoid valve at the bottom of the duct section between electric insulating valve and fresh air handling unit. The fundaments of this new method and the difficulty to extend this new method are introduced.

关 键 词：集中空调 新风机组 电动保温阀 连锁 加热器 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]