Experimental study on thermal exposure of pipes to steady hydrogen jet fire impingement

IF 7.8 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2025-10-15 DOI:10.1016/j.psep.2025.108017

Ian Bradley , Martin Kluge , Abdel Karim Habib , Giordano Emrys Scarponi

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引用次数: 0

Abstract

Jet fires resulting from the accidental release of pressurized hydrogen represent a critical issue, especially due to their potential to trigger a domino effect. The lack of studies on the characterisation of the conditions experienced by, and response of, structures and process equipment directly engulfed in a hydrogen jet fire is of concern to industry. This work presents a characterisation study of a hydrogen jet fire with respect to the conditions experienced by an engulfed object. The total heat flux, along with its radiative component, was measured for hydrogen mass flow rates ranging from 0.05 to 0.2 kg/s. Heat fluxes exceeding 700 kW/m² were measured at a location that coincided with the point of jet impact. The maximum radiative fraction measured was 20 % at the back of the tube where the specimen could receive radiation from the majority of the flame plume. It is concluded that conditions within hydrogen jet fires are notably more severe than those in hydrocarbon jet fires (for which a heat flux of 350 kW/m² is considered high). This suggests that PFP systems should not be automatically assumed to provide protection against hydrogen jet fires without further research or actual test evidence of performance.

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稳态氢射流火灾冲击下管道热暴露试验研究

由意外释放的加压氢引起的喷气火灾是一个关键问题，特别是因为它们有可能引发多米诺骨牌效应。对直接被氢喷射火灾吞没的结构和工艺设备所经历的条件和反应的特征缺乏研究，这是工业界关注的问题。这项工作提出了一个表征研究的氢射流火相对于条件所经历的被吞没的对象。在氢气质量流率为0.05 ~ 0.2 kg/s范围内，测量了总热流密度及其辐射分量。在与射流撞击点重合的位置测量了超过700 kW/m2的热通量。测量到的最大辐射分数为20 %，在管的后部，样品可以接收到大部分火焰羽的辐射。由此得出结论，氢气射流火灾的条件明显比碳氢化合物射流火灾的条件更为严重（其中350 kW/m2的热流被认为是高的）。这表明，在没有进一步的研究或实际性能测试证据的情况下，不应自动假定PFP系统提供对氢气喷射火灾的保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.