Influence of equivalence ratio and H2 blended ratio on explosion propagation characteristics of DME/H2 blended gas in closed narrow space

Gang Zhou; Yu Ma; Yang Kong; Qi Zhang; Xinming Qian; Zhenyi Liu; Kan Wang; Yang Liu; Siqi Yang; Yuying Li

doi:10.1016/j.ijhydene.2023.04.101

Influence of equivalence ratio and H₂ blended ratio on explosion propagation characteristics of DME/H₂ blended gas in closed narrow space

Gang Zhou, Yu Ma, Yang Kong, Qi Zhang^*, Xinming Qian, Zhenyi Liu, Kan Wang, Yang Liu, Siqi Yang, Yuying Li

^*Corresponding author for this work

School of Mechatronical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

To reveal the explosion risk and propagation law of dimethyl ether (DME)/hydrogen (H₂) blended gas, the explosion propagation characteristics of DME/H₂ blended gas under different equivalence ratio (Φ) and hydrogen blended ratio (λ) was investigated based on experimental research and theoretical analysis. The results show that the peak overpressure (P_p), the peak pressure rise rate (dP/dt)_p and the peak shock wave propagation velocity (V_p) show an increasing and then decreasing trend with the increase of Φ, and reach the maximum at Φ = 1.0. The effect of a little addition of H₂ on the explosion hazards of blended gas is small, but when λ > 10%, the explosion hazards increase significantly. The magnitude of increase of P_p, (dP/dt)_p and V_p is different with the increase of λ. Compared with the enhancement effect on P_p and (dP/dt)_p, the enhancement effect on V_p is more obvious with the continuous blend of H₂. Comprehensive analysis of the thermodynamic and chemical kinetic parameters of H₂, the chemical kinetic parameters of H₂ play a dominant role in the explosion risk of hydrogen-blended gases.

Original language	English
Pages (from-to)	30132-30143
Number of pages	12
Journal	International Journal of Hydrogen Energy
Volume	48
Issue number	77
DOIs	https://doi.org/10.1016/j.ijhydene.2023.04.101
Publication status	Published - 8 Sept 2023

Keywords

DME/H blended gas
Equivalence ratio
Experiment
Explosion propagation characteristics
Hydrogen blended ratio

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10.1016/j.ijhydene.2023.04.101

Cite this

@article{2e5173b2116d4f5683141c5c589b8a93,

title = "Influence of equivalence ratio and H2 blended ratio on explosion propagation characteristics of DME/H2 blended gas in closed narrow space",

abstract = "To reveal the explosion risk and propagation law of dimethyl ether (DME)/hydrogen (H2) blended gas, the explosion propagation characteristics of DME/H2 blended gas under different equivalence ratio (Φ) and hydrogen blended ratio (λ) was investigated based on experimental research and theoretical analysis. The results show that the peak overpressure (Pp), the peak pressure rise rate (dP/dt)p and the peak shock wave propagation velocity (Vp) show an increasing and then decreasing trend with the increase of Φ, and reach the maximum at Φ = 1.0. The effect of a little addition of H2 on the explosion hazards of blended gas is small, but when λ > 10%, the explosion hazards increase significantly. The magnitude of increase of Pp, (dP/dt)p and Vp is different with the increase of λ. Compared with the enhancement effect on Pp and (dP/dt)p, the enhancement effect on Vp is more obvious with the continuous blend of H2. Comprehensive analysis of the thermodynamic and chemical kinetic parameters of H2, the chemical kinetic parameters of H2 play a dominant role in the explosion risk of hydrogen-blended gases.",

keywords = "DME/H blended gas, Equivalence ratio, Experiment, Explosion propagation characteristics, Hydrogen blended ratio",

author = "Gang Zhou and Yu Ma and Yang Kong and Qi Zhang and Xinming Qian and Zhenyi Liu and Kan Wang and Yang Liu and Siqi Yang and Yuying Li",

note = "Publisher Copyright: {\textcopyright} 2023 Hydrogen Energy Publications LLC",

year = "2023",

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doi = "10.1016/j.ijhydene.2023.04.101",

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AU - Zhou, Gang

AU - Ma, Yu

AU - Kong, Yang

AU - Zhang, Qi

AU - Qian, Xinming

AU - Liu, Zhenyi

AU - Wang, Kan

AU - Liu, Yang

AU - Yang, Siqi

AU - Li, Yuying

PY - 2023/9/8

Y1 - 2023/9/8

N2 - To reveal the explosion risk and propagation law of dimethyl ether (DME)/hydrogen (H2) blended gas, the explosion propagation characteristics of DME/H2 blended gas under different equivalence ratio (Φ) and hydrogen blended ratio (λ) was investigated based on experimental research and theoretical analysis. The results show that the peak overpressure (Pp), the peak pressure rise rate (dP/dt)p and the peak shock wave propagation velocity (Vp) show an increasing and then decreasing trend with the increase of Φ, and reach the maximum at Φ = 1.0. The effect of a little addition of H2 on the explosion hazards of blended gas is small, but when λ > 10%, the explosion hazards increase significantly. The magnitude of increase of Pp, (dP/dt)p and Vp is different with the increase of λ. Compared with the enhancement effect on Pp and (dP/dt)p, the enhancement effect on Vp is more obvious with the continuous blend of H2. Comprehensive analysis of the thermodynamic and chemical kinetic parameters of H2, the chemical kinetic parameters of H2 play a dominant role in the explosion risk of hydrogen-blended gases.

AB - To reveal the explosion risk and propagation law of dimethyl ether (DME)/hydrogen (H2) blended gas, the explosion propagation characteristics of DME/H2 blended gas under different equivalence ratio (Φ) and hydrogen blended ratio (λ) was investigated based on experimental research and theoretical analysis. The results show that the peak overpressure (Pp), the peak pressure rise rate (dP/dt)p and the peak shock wave propagation velocity (Vp) show an increasing and then decreasing trend with the increase of Φ, and reach the maximum at Φ = 1.0. The effect of a little addition of H2 on the explosion hazards of blended gas is small, but when λ > 10%, the explosion hazards increase significantly. The magnitude of increase of Pp, (dP/dt)p and Vp is different with the increase of λ. Compared with the enhancement effect on Pp and (dP/dt)p, the enhancement effect on Vp is more obvious with the continuous blend of H2. Comprehensive analysis of the thermodynamic and chemical kinetic parameters of H2, the chemical kinetic parameters of H2 play a dominant role in the explosion risk of hydrogen-blended gases.

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