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

来源期刊：中南大学学报(英文版)2006年第5期

论文作者：艾元方 梅炽 蒋绍坚 黄国栋 陈红荣

文章页码：506 - 510

Key words：thin-walled regenerator; perturbation; temperature efficiency; switch time

Abstract: 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.