Investigation on the effects of wall thickness and porous media on the thermal performance of a non-premixed hydrogen fueled cylindrical micro combustor

被引：141
作者：
Peng, Qingguo [1 ,2 ,3 ]
E, Jiaqiang [1 ,2 ,3 ]
Chen, Jingwei [1 ,2 ,3 ]
Zuo, Wei [1 ,2 ,3 ]
Zhao, Xiaohuan [1 ,2 ]
Zhang, Zhiqing [1 ,2 ]
机构：
[1] Hunan Univ, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Coll Mech & Vehicle Engn, Changsha 410082, Hunan, Peoples R China
[3] Hunan Univ, Inst New Energy & Energy Saving & Emiss Reduct Tec, Changsha 410082, Hunan, Peoples R China
来源：
ENERGY CONVERSION AND MANAGEMENT | 2018年 / 155卷
基金：
中国国家自然科学基金;
关键词：
Micro combustion; Outer wall thickness; Porous media; Thermal performance; THERMOACOUSTIC SYSTEM; THERMOPHOTOVOLTAIC SYSTEM; HEAT RECIRCULATION; FLAME STABILITY; NUMERICAL INVESTIGATIONS; H-2-AIR COMBUSTION; EFFICIENCY; MIXTURE; STEP; FLOW;
D O I：
10.1016/j.enconman.2017.10.095
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An investigation on non-premixed H-2/air combustion in a cylindrical micro combustor has been carried out. The effects of porous media and outer wall thickness on the combustion characteristics, flame location, thermal performance and energy conversion efficiency of the thermo photovoltaic (TPV) system were investigated. For the application of micro TPV system, a high and uniform outer wall temperature distribution is indispensable for the sustaining output, and the high energy efficiency is desirable. The results indicate that the setting of porous media or the increase of outer wall thickness can enhance the heat transfer in micro combustor and affects the flame stability, and the micro combustor with porous media and outer wall thickness b = 0.2 mm obtains the lowest flame location. They are also conducive to the improvement of outer wall temperature and energy efficiency, the outer wall temperature of the micro combustor with a thicker outer wall and porous media is relatively uniform and the energy conversion efficiency of micro TPV system is also improved, the micro combustor with b = 0.6 mm and porous media is more suitable for the application of micro TPV system. Additionally, the external thermal environment also can improve the outer wall temperature profile and the working performance of the micro combustor.
引用
收藏
页码：276 / 286
页数：11
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