| 管内流动换热过程的性能综合分析 |
| |
| 引用本文： | 陈维汉.管内流动换热过程的性能综合分析[J].华中科技大学学报(自然科学版),2001,29(Z1):18-21. |
| |
| 作者姓名： | 陈维汉 |
| |
| 作者单位： | 华中科技大学能源与动力工程学院 |
| |
| 摘 要： | 基于管内流动换热方程,在最小初投资的条件下导出经济合理的管长、管径比与换热参数的关系式.同时对管内流动换热过程进行火用分析,得出火用损失率最小的最佳运行参数(Reopt),以及由换热准则关系式得出的最佳换热参数(Stopt),最后得到使管内流动换热过程的结构、流动与换热性能综合优化的管长管径比.
|
| 关 键 词： | 管内流动换热 结构分析与火 用损失率分析 结构参数与运行参数的综合优化 |
| 文章编号： | 1000-8616(2001)1-0018-04 |
| 修稿时间： | 1999年12月15 |
Synthetical Analysis of Performances for the Flow and Heat Transfer Process inside a Tube |
| |
| Chen Weihan College. of Energy & Power Eng.,HUST Wuhan ,China..Synthetical Analysis of Performances for the Flow and Heat Transfer Process inside a Tube[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2001,29(Z1):18-21. |
| |
| Authors: | Chen Weihan College of Energy & Power Eng HUST Wuhan China |
| |
| Institution: | Chen Weihan College. of Energy & Power Eng.,HUST Wuhan 430074,China. |
| |
| Abstract: | Based on the heat balance equation of forced convective heat transfer inside a tube, the economical ratio relation of length to diameter of the tube is derived under the condition of minimum investment. The relation is formed as ( L/d i) econ = cSt -1 . The exergy loss is analyzed for the flow and heat transfer process inside the tube, and the optimal operation parameter( Re opt ) is obtained under the minimum exergy loss rate. The optimal Stanton unmber ( St opt ) is derived by the critical relation of the convective heat transfer inside the tube. Lastly, the optimal economical ratio ( L/d i) opt for the convective heat transfer inside the tube is determined by the convective critical relationship. |
| |
| Keywords: | convective heat transfer inside a tube analysis of structure and exergy loss rate sythertical optimization of structure and operation parameters |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
