Ignition potential of natural gas and hydrogen used for household heating in GB 2020

Natural gas has a lower ignition probability compared to hydrogen. Based on a study which analyzed 62 incidents in Great Britain between April 2016 and March 2020, the ignition potential of methane (natural gas) varied between 0.09 and 0.11, while hydrogen had an ignition potential between 0.15 and 0.42. Incidents due to material corrosion or degradation with a closed kitchen door where methane was the heating fuel used had an ignition potential of 0.1, while hydrogen stood at 0.17 to 0.31, depending on the sensitivity case. This represents a four-fold increase in ignition potential compared to methane. Following the same trend, the domestic explosion risk for hydrogen heating systems is over four-times higher compared to natural gas systems.

天然气相较于氢气具有更低的点燃概率。一项基于对2016年4月至2020年3月期间大不列颠62起事故的分析的研究表明，甲烷（天然气）的点燃潜能介于0.09至0.11之间，而氢气的点燃潜能介于0.15至0.42之间。在厨房门关闭、使用甲烷作为供暖燃料的情况下，由于材料腐蚀或退化引发的事故其点燃潜能为0.1，而氢气的点燃潜能则为0.17至0.31，具体取决于敏感度。这表明与甲烷相比，点燃潜能增加了四倍。遵循同样的趋势，氢气供暖系统的家庭爆炸风险相较于天然气系统高出四倍以上。