Characteristics of OH∗, NO∗ chemiluminescence, flame temperature, and heat release in hydrogen inverse diffusion flame

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-07-29 DOI:10.1016/j.ijhydene.2025.150648

Seunghyun Jo, Jeong-Yeol Choi

引用次数: 0

Abstract

Combustion characteristics, including OH∗, NO∗ chemiluminescence, flame temperature, and heat release, in hydrogen inverse diffusion flames (IDFs) have been experimentally studied at fuel-lean and stoichiometric conditions. For a comparative analysis, normal diffusion flames (NDFs) were assessed using the same burner configuration. Experimental results show that OH∗ and NO∗ have significant intensity in the interface between the air jet and the hydrogen jet in IDFs. The maximum flame temperature in IDFs increases with the global equivalence ratio, while it remains nearly constant in NDFs. High flame temperatures are observed in the interface between the air jet and the hydrogen jet. The heat release increases with flow rates ranging from 0.0003 to 0.0005 m³/s and decreases with flow rates from 0.0006 to 0.0008 m³/s for both IDFs and NDFs. The heat release in IDFs is higher than in the NDFs.

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氢逆扩散火焰中OH *、NO *的化学发光、火焰温度和热释放特性

燃烧特性，包括OH *， NO *化学发光，火焰温度，和热释放，在氢逆扩散火焰（IDFs）在燃料稀薄和化学计量条件下进行了实验研究。为了进行比较分析，使用相同的燃烧器配置评估正常扩散火焰（ndf）。实验结果表明，OH∗和NO∗在空气射流和氢气射流界面中具有显著的强度。内部火焰的最高温度随着整体等效比的增大而增大，而内部火焰的最高温度基本保持不变。在空气射流和氢射流之间的界面处观察到较高的火焰温度。当流量为0.0003 ~ 0.0005 m3/s时，热释放增大，当流量为0.0006 ~ 0.0008 m3/s时，热释放减小。内流场的放热量大于非流场。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.