Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 46, Issue 42, Pages 22165-22179Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.04.030
Keywords
Micro combustion; Heat transfer enhancement; MTPV system; Equivalence ratio
Categories
Funding
- Graduate Scientific Research and Innovation Foundation of Chongqing [CYB20019]
- Fundamental Research Funds for the Central Universities [2019CDYGYB022]
- Natural Science Foundation of Chongqing [cstc2019jcyj-msxmX0223]
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The study focuses on the impact of hydrogen mass flow rate, equivalence ratio, and materials on the thermal performance of micro-thermophotovoltaic (MTPV) system, providing suggestions for improving energy output.
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. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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