Numerical study of experimental feasible heat release rate markers for NH3–H2-air premixed flames

Zhang，Haotian1; Han，Xinlu2; Jiang，Jianyi1; Li，Xuefang3; Gan，Xiaohua1; Zhou，Bo1

2022

10.1016/j.ijhydene.2022.06.124

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   Impact Factor & Quartile

0360-3199

1879-3487

Ammonia (NH) and hydrogen (H) as carbon-free fuels have attracted much attention for combustion applications in recent years. Co-firing ammonia with hydrogen provides a solution to overcome the extremes in the reactivities of both pure ammonia and hydrogen fuels. Heat release rate (HRR) is one of the most important quantities in the study of turbulent combustion, but direct measurement of local HRR is not experimentally feasible. In this study, we explored several quantities, [NH], [O], and the gradient of [OH] (Grad [OH]) as potential experimentally feasible HRR markers for NH–H-air premixed flames using numerical simulations. The performance of these quantities over a wide range of equivalence ratios and H blending ratios have been examined, and some key reactions have been identified to explain the corresponding variations of the correlation for [NH] and [O]. It is concluded that the [NH] and Grad [OH] can be used in general as a suitable HRR marker for NH–H-air premixed flames, and the use of [NH] is especially recommended for lean flame conditions. A strategy that slightly shifts the [NH] and Grad [OH] profiles to overlap the corresponding HRR shows a further improvement on the performance of [NH] and Grad [OH]. The use of [O] can be considered for rich flame conditions while cautions are needed for conditions with high H blending ratios.

Carbon-free fuels Experimental feasibility Heat release rate (HRR) marker NH3–H2 flames

SCI ; EI

English

First ; Corresponding

program of Shenzhen Natural Science Fund Grant[20200925155430003] ; SUSTech[52176191] ; National Natural Science Foundation of China[52176191]

Chemistry ; Electrochemistry ; Energy & Fuels

Chemistry, Physical ; Electrochemistry ; Energy & Fuels

WOS:000864213900034

PERGAMON-ELSEVIER SCIENCE LTD

20223012404814

Blending ; Carbon ; Combustion ; Hydrogen ; Hydrogen fuels

Gas Fuels:522 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2

ENGINEERING

2-s2.0-85134623535

Scopus

1.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.College of New Energy,China University of Petroleum (East China),Qingdao,266580,China
3.Institute of Thermal Science and Technology,Shandong University,Jinan,250061,China

Zhang，Haotian,Han，Xinlu,Jiang，Jianyi,等. Numerical study of experimental feasible heat release rate markers for NH3–H2-air premixed flames[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2022,47(65):28165-28175.

Zhang，Haotian,Han，Xinlu,Jiang，Jianyi,Li，Xuefang,Gan，Xiaohua,&Zhou，Bo.(2022).Numerical study of experimental feasible heat release rate markers for NH3–H2-air premixed flames.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,47(65),28165-28175.

Zhang，Haotian,et al."Numerical study of experimental feasible heat release rate markers for NH3–H2-air premixed flames".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 47.65(2022):28165-28175.