Investigation on the effects of front-cavity on flame location and thermal performance of a cylindrical micro combustor

被引：92
作者：
Peng, Qingguo [1 ,2 ,3 ]
E, Jiaqiang [1 ,2 ,3 ]
Zhang, Zhiqing [1 ,2 ]
Hu, Wenyu [1 ,2 ]
Zhao, Xiaohuan [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 Te, Changsha 410082, Hunan, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2018年 / 130卷
基金：
中国国家自然科学基金;
关键词：
Micro combustion; Front-cavity; Flame location; Thermal performance; Energy conversion efficiency; ENTROPY GENERATION ANALYSIS; PREMIXED COMBUSTION; THERMOACOUSTIC SYSTEM; HEAT RECIRCULATION; THERMOPHOTOVOLTAIC SYSTEM; ENERGY-CONVERSION; WALL THICKNESS; POROUS-MEDIA; STABILITY; AIR;
D O I：
10.1016/j.applthermaleng.2017.11.016
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Micro combustor acts as the most important component of the micro thermo photovoltaic (TPV) system. It is crucial that the design and performance of a micro combustor are optimized for its application in a micro TPV system. A micro combustor with front-cavity is proposed in this study, and comparisons of flame stability and thermal performance of the micro combustor with and without front-cavity are made. In addition, the effects of front-cavity size and front-cavity shape on OH mass fraction, flame location and thermal performance of micro combustor are also discussed. The front-cavity in the micro combustor helps to improve the flame stability, increase outer wall temperature value and total energy conversion efficiency for the micro TPV system. It is found that the micro combustor with arc front-cavity (inner diameter ratio of front-cavity and combustion chamber is beta = 0.9) is more suitable for the application in the micro TPV system. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：541 / 551
页数：11
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