A novel micro‐thermophotovoltaic combustor of hydrogen–air to enable ultra‐lean combustion, high thermal output and NO low emissions

Mansouri, Z ORCID: https://orcid.org/0000-0001-9293-3462, Chouichi, L, Azzouz, S and Settar, A, 2025. A novel micro‐thermophotovoltaic combustor of hydrogen–air to enable ultra‐lean combustion, high thermal output and NO low emissions. International Journal of Energy Research, 2025 (1): 4352411. ISSN 0363-907X

Preview

Text 2426100_Mansouri.pdf - Published version Download (4MB) | Preview

Abstract

This study presents a novel micro-combustor (MC) design called micro-trapped vortex combustor (MTVC) for micro-thermophotovoltaic (MTPV) devices used in small-scale electricity generation. Traditional MC designs struggle to operate efficiently under ultra-lean regimes due to flame quenching, limiting their performance. The proposed MTVC incorporates the trapped vortex concept, inspired by aeronautical applications, to improve thermal performance and stability under ultra-lean conditions. Numerical simulations, using the Navier–Stokes and energy equations for laminar and reactive flow, are conducted to compare the MTVC with conventional micro-backward-step combustors (MBSCs) under hydrogen (H2)–air mixture combustion. The study focuses on key performance parameters such as temperature distribution, heat recirculation, flame shape, flow topology, radiative power and emissions. The results show that the MTVC can operate at an ultra-lean equivalence ratio of Φ = 0.5, while the MBSC experiences flame quenching below Φ = 0.7. The MTVC design achieves up to 26.51% higher radiative power and a 36% improvement in energy conversion efficiency compared to traditional combustor designs. Additionally, the MTVC produces 43% less nitrogen oxides (NOx) emissions, demonstrating its potential for both higher efficiency and reduced environmental impact in portable power applications.

Item Type:	Journal article
Publication Title:	International Journal of Energy Research
Creators:	Mansouri, Z., Chouichi, L., Azzouz, S. and Settar, A.
Publisher:	Wiley
Date:	4 February 2025
Volume:	2025
Number:	1
ISSN:	0363-907X
Identifiers:	Number Type 10.1155/er/4352411 DOI 2426100 Other
Rights:	Copyright © 2025 Zakaria Mansouri et al. International Journal of Energy Research published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	14 Apr 2025 10:27
Last Modified:	14 Apr 2025 10:27
URI:	https://irep.ntu.ac.uk/id/eprint/53398

Actions (login required)

Edit View

Statistics

Views

Downloads