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Numerical investigations on thermal performance enhancement of hydrogen-fueled micro planar combustors with injectors for micro-thermophotovoltaic applications

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  • Zuo, Wei
  • Li, Qingqing
  • He, Zhu
  • Li, Yawei

Abstract

In order to address the issue about the low output power of the micro-thermophotovoltaic system, in this work, the inlets of the traditional micro planar combustor are modified into injectors for better thermal performance and higher output power of the micro-thermophotovoltaic system. The thermal performance of traditional and modified micro planar combustors is numerically investigated and compared. It is found that the thermal performance of the modified micro planar combustor is greatly enhanced with the help of the injectors. This is due to that the reduction of the step diameter leads to the rise of the velocity of the inlet flow, resulting in the chemical reaction zone is closer to the center of the combustion chamber in the micro planar combustor. Furthermore, the positive effects and negative effects on thermal performance enhancement brought by the reduction of the step diameter of injectors are vividly discussed under different hydrogen mass flow rate, hydrogen/air equivalence ratio and solid wall material. Finally, some guidelines are proposed for the applications of the micro planar combustors with injectors in the micro-thermophotovoltaic system. This work provides us a simple and practical way to address the issue about the low output power of the micro-thermophotovoltaic system.

Suggested Citation

  • Zuo, Wei & Li, Qingqing & He, Zhu & Li, Yawei, 2020. "Numerical investigations on thermal performance enhancement of hydrogen-fueled micro planar combustors with injectors for micro-thermophotovoltaic applications," Energy, Elsevier, vol. 194(C).
    • Handle: RePEc:eee:energy:v:194:y:2020:i:c:s0360544220300116
    DOI: 10.1016/j.energy.2020.116904
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    5. Zuo, Wei & Wang, Zijie & Li, Qingqing & Zhou, Kun & Huang, Yuhan, 2024. "Numerical investigations on the performance enhancement of a hydrogen-fueled micro planar combustor with finned bluff body for thermophotovoltaic applications," Energy, Elsevier, vol. 293(C).
    6. Giacomo Cinieri & Donato Fontanarosa & Maria Grazia De Giorgi, 2023. "Combustion Characteristics of Hydrogen/Air Mixtures in a Plasma-Assisted Micro Combustor," Energies, MDPI, vol. 16(5), pages 1-20, February.
    7. Yang, Xiao & Yang, Wenming & Dong, Shikui & Tan, Heping, 2020. "Flame stability analysis of premixed hydrogen/air mixtures in a swirl micro-combustor," Energy, Elsevier, vol. 209(C).
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    9. Sarrafan Sadeghi, Soroush & Tabejamaat, Sadegh & Ghahremani, Amirreza & Narimani Asl, Sina, 2024. "A novel Swiss-roll counterflow micro-combustor: Experimental investigation of flame dynamic characteristics by spectroscopy and RGB image processing methods," Energy, Elsevier, vol. 299(C).
    10. Zhao, He & Zhao, Dan & Becker, Sid & Rong, Hui & Zhao, Xiaohuan, 2023. "Entropy generation and improved thermal performance investigation on a hydrogen-fuelled double-channel microcombustor with Y-shaped internal fins," Energy, Elsevier, vol. 283(C).
    11. Yang, Xiao & He, Zhihong & Cha, Suna & Zhao, Lei & Dong, Shikui & Tan, Heping, 2020. "Parametric analysis on the combustion and thermal performance of a swirl micro-combustor for micro thermophotovoltaic system," Energy, Elsevier, vol. 198(C).
    12. Zuo, Wei & Li, Dexin & E, Jiaqiang & Xia, Yongfang & Li, Qingqing & Quan, Yifan & Zhang, Guangde, 2023. "Parametric study of cavity on the performance of a hydrogen-fueled micro planar combustor for thermophotovoltaic applications," Energy, Elsevier, vol. 263(PD).
    13. He, Lipeng & Han, Yuhang & Liu, Renwen & Hu, Renhui & Yu, Gang & Cheng, Guangming, 2022. "Design and performance study of a rotating piezoelectric wind energy harvesting device with wind turbine structure," Energy, Elsevier, vol. 256(C).
    14. Gao, Wei & Yan, Yunfei & Shen, Kaiming & Huang, Lujing & Zhao, Ting & Gao, Bo, 2022. "Combustion characteristic of premixed H2/air in the micro cavity combustor with guide vanes," Energy, Elsevier, vol. 239(PA).
    15. Zuo, Wei & Wang, Zijie & E, Jiaqiang & Li, Qingqing & Cheng, Qianju & Wu, Yinkun & Zhou, Kun, 2023. "Numerical investigations on the performance of a hydrogen-fueled micro planar combustor with tube outlet for thermophotovoltaic applications," Energy, Elsevier, vol. 263(PC).
    16. Meng, Caifeng & Liu, Yunpeng & Xu, Zhiheng & Wang, Hongyu & Tang, Xiaobin, 2022. "Selective emitter with core–shell nanosphere structure for thermophotovoltaic systems," Energy, Elsevier, vol. 239(PA).
    17. Zuo, Wei & Li, Jing & Zhang, Yuntian & Li, Qingqing & He, Zhu, 2020. "Effects of multi-factors on comprehensive performance of a hydrogen-fueled micro-cylindrical combustor by combining grey relational analysis and analysis of variance," Energy, Elsevier, vol. 199(C).
    18. E, Jiaqiang & Luo, Bo & Han, Dandan & Chen, Jingwei & Liao, Gaoliang & Zhang, Feng & Ding, Jiangjun, 2022. "A comprehensive review on performance improvement of micro energy mechanical system: Heat transfer, micro combustion and energy conversion," Energy, Elsevier, vol. 239(PE).
    19. Ni, Siliang & Zhao, Dan & Sellier, Mathieu & Li, Junwei & Chen, Xinjian & Li, Xinyan & Cao, Feng & Li, Weixuan, 2021. "Thermal performances and emitter efficiency improvement studies on premixed micro-combustors with different geometric shapes for thermophotovoltaics applications," Energy, Elsevier, vol. 226(C).

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