To a 100 % hydrogen domestic boiler

氢燃烧每公斤产生约142兆焦耳，但其物理密度非常低，在室温条件下约为81g/立方米。相比之下，甲烷的产量为50MJ/kg，密度为654g/m~3。目前，由于安全问题和避免重新设计锅炉燃烧器，欧洲现有的氢气基础设施项目(法国的GRHYD)将混合使用甲烷和氢气。氢气的燃烧与甲烷完全不同，火焰速度更快，火焰是透明的，因此更难控制和保持火焰的稳定燃烧，辐射传递比可见的甲烷火焰更弱。这些特点要求重新设计家用锅炉燃烧器，如果要将氢用作网络燃料的话。Frazer Nash在2018年4月发布的一份BEIS报告描述了行业如何有机会重新设计合适的家用氢气燃烧器。Worgas有限公司是一家当地公司，正在研究这一实际应用。

Hydrogen combustion produces approximately 142 MJ per kg, but its physical density is very low, at room conditions approximately 81 g/m3. By comparison methane produces 50 MJ/kg with a density of 654 g/m3. Currently, there are existing hydrogen infrastructure projects in progress in Europe (GRHYD in France) to use a mix of methane and hydrogen due to the safety issues and avoiding boiler burner redesign. Hydrogen burns quite differently to methane, with a faster flame speed, and a transparent flame, such that it is harder to control and maintain the flame in steady combustion, and the radiative transfer is weaker than for the visible methane flame. These characteristics require redesign of domestic boiler burners if hydrogen is to be used as a network fuel. A BEIS report by Frazer Nash in April 2018 described how industry has the opportunity to redesign for suitable domestic hydrogen burners. Worgas Ltd are a local company investigating the practical application.