TY - JOUR
T1 - Influence of equivalence ratio and H2 blended ratio on explosion propagation characteristics of DME/H2 blended gas in closed narrow space
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
N1 - Publisher Copyright:
© 2023 Hydrogen Energy Publications LLC
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.
KW - DME/H blended gas
KW - Equivalence ratio
KW - Experiment
KW - Explosion propagation characteristics
KW - Hydrogen blended ratio
UR - http://www.scopus.com/inward/record.url?scp=85154569360&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2023.04.101
DO - 10.1016/j.ijhydene.2023.04.101
M3 - Article
AN - SCOPUS:85154569360
SN - 0360-3199
VL - 48
SP - 30132
EP - 30143
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 77
ER -
