Safety of hydrogen and natural gas blends

氢气和天然气混合物的安全性

• 批准号: 2888392
• 金额: --
• 依托单位: University of Ulster
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2888392
• 关键词: Safety; hydrogen; natural; gas; blends

Safe handling of hydrogen and hydrogen natural gas blends requires an understanding of hazards and associated risks arising from leaks. These include (but are not limited to) hazard distances defined by the extent of the flammable cloud, and thermal effects from jet fire. The impact of leak conditions on dispersion must be understood for typical connections. Understanding of the underlying physical phenomena is key as countries move towards a network with hydrogen blends. Work is needed to adjust safety zones to account for hydrogen blends. An objective of this project is to expand Ulster analytical models for unignited and ignited jets to account for methane and hydrogen-methane blends. The effect of buoyancy on the releases should also be accounted for. The study will focus on a combination of analytical modelling and computational fluid dynamics (CFD) modelling. Deliverables-Critical literature review of unignited and ignited hydrogen, and hydrogen-methane releases, hazards identification and analysis, credible incident scenarios, modelling approaches for hydrogen hazards;-Contemporary models for simulation of unignited and ignited releases of blends-Verification and/or validation of models against available experimental data as relevant;-Simulation of selected incident scenarios;-Formulation of novel safety strategies and engineering solutions;

安全处理氢和氢天然气混合需要了解泄漏引起的危害和相关风险。这些包括（但不限于）由易燃云的范围定义的危险距离以及喷气火的热效应。对于典型的连接，必须了解泄漏条件对分散体的影响。了解潜在的物理现象是关键，因为各国朝着具有氢混合的网络发展。需要工作以调整安全区域以说明氢混合物。该项目的一个目的是扩展Ulster的分析模型，以解释未点燃和点燃的喷气机，以解释甲烷和氢 - 甲烷混合物。还应考虑浮力对发行的影响。该研究将重点放在分析建模和计算流体动力学（CFD）建模的组合上。对未发出和点燃的氢以及氢 - 甲烷的发行，危害识别和分析，可信事件场景，氢危害的建模方法的危害和点火模型的建模模型，用于模拟未点燃和点燃的混合验证和/或验证模型的新型策略；解决方案；