低温发电用翅片管换热器传热特性的数值模拟分析  

Numerical simulation on heat performance of finned tube heat exchanger used in low-boiling fluid power generation

作　　者：周乃君[1] 郭静[1] 罗亮[1] 王志奇[1] 

机构地区：[1]中南大学能源科学与工程学院,长沙410083

出　　处：《低温与超导》2012年第5期73-78,共6页Cryogenics and Superconductivity

基　　金：湖南省科技计划重点项目(编号:2009GK2009)

摘　　要：为了深入研究低温余热发电系统用翅片管换热器的传热特性,文中建立了翅片管换热器计算模型,对工质R123在翅片管换热器内的传热性能进行数值模拟,比较管内工质R123在不同流速与温度时的换热特性,利用最小二乘法原理,对烟气侧和工质侧的换热关联式进行了拟合,得到了二者的换热准则方程,此外,利用实验方法对模拟结果进行验证。To deeply study the thermal performance of finned tube heat exchanger used in low - boiling fluid power genera- tion, the convective heat transfer performance of R123 inside the finned tube was calculating by numerical simulation and compa- ring thermal performance in different velocity and temperature. Heat transfer criteria formula of waste flue and working fluid was fitted by the least square method. Furthermore, the simulation result was tested and verified by using experimental method.

关 键 词：翅片管换热器 传热特性 数值模拟 低温发电 

分 类 号：TK172[动力工程及工程热物理—热能工程]