| Optimization on temperature efficiency and switch time of thin-walled regenerator with perturbation analysis |
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| 引用本文： | 艾元方 梅炽 蒋绍坚 黄国栋 陈红荣. Optimization on temperature efficiency and switch time of thin-walled regenerator with perturbation analysis[J]. 中南工业大学学报(英文版), 2006, 13(5): 506-510. DOI: 10.1007/s11771-006-0077-6 |
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| 作者姓名： | 艾元方 梅炽 蒋绍坚 黄国栋 陈红荣 |
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| 作者单位： | School of Energy Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 1 INTRODUCTIONDispersion combustion with low oxygen-con-centration (DCLO) , when the air temperature ispreheated to 800 ℃and the oxygen concentrationdiluted to 15 %(volume fraction) , can offer highthermal efficiency ,reduced NOxemission and uni-form heat flux field[1]. The honeycomb regenera-tive system was appliedin most dispersion combus-tion equipment[2]. The temperature efficiencyηtand the switchti meTare critical for regenerator toachieve the opti mal dispersion performance[1].…
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| 关 键 词： | 薄壁蓄热器 扰动 温度效率 开关时间 优化 |
| 文章编号： | 1005-9784（2006）05-0506-05 |
| 收稿时间： | 2006-01-05 |
| 修稿时间： | 2006-03-28 |
Optimization on temperature efficiency and switch time of thin-walled regenerator with perturbation analysis |
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| Ai Yuan-fang , Mei Chi , Jiang Shao-jian , Huang Guo-dong and Chen Hong-rong. Optimization on temperature efficiency and switch time of thin-walled regenerator with perturbation analysis[J]. Journal of Central South University of Technology, 2006, 13(5): 506-510. DOI: 10.1007/s11771-006-0077-6 |
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| Authors: | Ai Yuan-fang Mei Chi Jiang Shao-jian Huang Guo-dong Chen Hong-rong |
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| Affiliation: | (1) School of Energy Science and Engineering, Central South University, 410083 Changsha, China |
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| 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. |
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| Keywords: | thin-walled regenerator perturbation temperature efficiency switch time |
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