Comparative investigation of combustion and thermal characteristics of a conventional micro combustor and micro combustor with internal straight/spiral fins for thermophotovoltaic system |
| |
| Authors: | Ziqiang He Yunfei Yan Xiuquan Li Kaiming Shen Junnan Li Zhien Zhang |
| |
| Affiliation: | 1. Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China;2. School of Energy and Power Engineering, Chongqing University, Chongqing, 400044, China;3. Chongqing Key Laboratory of Software Theory & Technology, College of Computer Science, Chongqing University, Chongqing, 400044, China;4. William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA |
| |
| Abstract: | The energy output and energy conversion efficiency of MTPV system are relatively low due to the energy loss. In order to improve the energy output of micro-thermophotovoltaic (MTPV) system, the internal straight and spiral fins are introduced into the micro combustor. The impact of hydrogen mass flow rate, equivalence ratio, and materials on the thermal performance are investigated. The increase of hydrogen mass flow rate brings higher average outer wall temperature, but the temperature difference also increases and the temperature uniformity becomes worse. The equivalence ratio of 1 is suggested to obtain higher average outer wall temperature and better temperature uniformity. The materials with higher thermal conductivity can obtain better thermal performance. Meanwhile, the higher thermal conductivity can also reduce the impact of introduction of internal fins. |
| |
| Keywords: | Micro combustion Heat transfer enhancement MTPV system Equivalence ratio |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
