低温翅片管换热器结霜试验研究  

An Experimental study of low-temperature finned-tube heat exchanger in frosting conditions

作　　者：苏海林[1] 陈叔平[1] 孙李宁[1] 李慧燕[1] 张晓曦[1] 王贵仁[1] 王艳丽[2] 

机构地区：[1]兰州理工大学石油化工学院,兰州730050 [2]玉门油田方圆物业管理有限责任公司供热站,玉门735200

出　　处：《低温工程》2007年第5期50-53,59,共5页Cryogenics

摘　　要：为了解翅片管换热器在低温工况下的传热性能以及结霜情况,进行了翅片管换热器的结霜试验。在翅片管换热器设置8个不同的观测点进行霜层厚度数据的采集,得到8条霜层厚度曲线。分析曲线后表明在不考虑环境风速的情况下,结霜量主要与空气相对湿度、流体在管内的形态等因素有关,同时发现翅片管换热器结霜的重点区域是换热器上部和入口处,并从理论上分析了结霜过程。The heat transfer characteristics and frosting conditions of low-temperature finned-tube heat exchanger in low-environment temperature were studied. Eight frost thickness curves were presented through thickness measurement system at eight different positions of finned-tube heat exchanger. The analysis of the frost thickness curves showed that air relative humidity and modality of liquid have a effect on frosting. The obvious areas of frosting lay in the upside and inlet of the finned-tube heat exchanger. And the frosting process was analyzed on the theoretically.

关 键 词：翅片管换热器 试验 结霜 液氩 

分 类 号：TK172[动力工程及工程热物理—热能工程]