大温差管内对流换热实验研究  

Experimental Study of Heat Convection in Tubes with Big Temperature Difference

作　　者：陈观生[1] 李文丰[1] 杜文杰[1] 杨景泉[1] 张莉[1] 麦志豪[1] 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《广东工业大学学报》2012年第3期92-95,共4页Journal of Guangdong University of Technology

基　　金：国家自然科学基金资助项目(51146005);广东工业大学创新基金资助项目(402102126)

摘　　要：针对太阳能热发电系统中大温差管内对流换热研究较为缺少的情况,搭建了大温差管内对流换热实验装置并进行实验研究.重点研究了加热温度(温差)、热流体及其流速、吸热管管径等因素对管内对流换热过程的影响,得到了实验温度范围内管内对流换热的结果,拟合出了相应的实验关联式,可以用于相关换热设备的设计.In view of little research into heat convection in tubes with big temperature difference, which were used in the high temperature solar thermal system, an experimental apparatus with big temperature difference was built up, and a lot of experimental studies were conducted. The experimental data were tested at different heating temperatures （temperature difference） , heat transfer fluids, HTFs flow rates and tube diameters, which influence the process of heat convection. The relationship equation has been obtained, which can be used for the design of similar heat transfer equipment.

关 键 词：大温差 对流 换热 太阳能 

分 类 号：TK513[动力工程及工程热物理—热能工程]