Optimization on temperature efficiency and switch time of thin-walled regenerator with perturbation analysis

作     者：艾元方 梅炽 蒋绍坚 黄国栋 陈红荣 

作者机构：School of Energy Science and Engineering Central South University 

出 版 物：《Journal of Central South University of Technology》 (中南工业大学学报（英文版）)

年 卷 期：2006年第13卷第5期

页      面：506-510页

核心收录：

学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：Project(2001AA514013) supported by the National High Technology Research and Development Programof China 

主　　题：thin-walled regenerator perturbation temperature efficiency switch time 

摘      要：The heat transfer characteristic of honeycomb ceramic regenerator was optimized by the perturbation analytical-numerical method. The results show that there is a temperature efficiency peak and the corresponding optimal switch time. The decrease of air oxygen concentration leads to the decrease of maximum temperature efficiency. Optimal switch time is directly proportional to the matrix thickness. The solid heat conduction along the flow direction and the regenerator heat storage capacity of the unit volume have no impact on maximum temperature efficiency and optimal switch time. The temperature efficiency tendency based on the semi-analysis is the same as dispersion combustion tests with low oxygen concentration, and optimal switch time of 2-4 s agrees well with that of 4 s in high-temperature gasification tests. The possibility of design, operate and control a thin-walled regenerator with high efficiency by means of the perturbation method is proved.