Experimental study of hydrogen explosion in repeated pipe congestion – Part 2: Effects of increase in hydrogen concentration in hydrogen-methane-air mixture

Shirvill, L.C.; Roberts, T.A.; Royle, M.; Willoughby, D.; Sathiah, Pratap

doi:10.1016/j.ijhydene.2018.12.021

Cited by 60 publications

(13 citation statements)

References 11 publications

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“…HCNG pipelines are also subject to safety concerns due to leakage and ignition because they operate at increased pressures, necessary to counterbalance the decrease in gas density with increased hydrogen composition. 25 Therefore, PWHT should always be considered due to potential cracking in areas of high stress at welding locations. For both ASME B31.8 and ASME B31.12, visual inspection of welds within a piping system is required for quality control, and welding must be conducted by a certified operator.…”

Section: Metal Welding and Hardness Requirementsmentioning

confidence: 99%

Section: Materials Of Construction For Pipelinesmentioning

confidence: 99%

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Ensuring natural gas infrastructure is suitable for hydrogen service

Ott

Delafontaine

Welchert

et al. 2023

Process Safety Progress

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This paper compares hazard and risk factors related to transporting hydrogen in natural gas pipelines. Properties of hydrogen-compressed natural gas (HCNG) blends and typical materials for the construction of transmission and distribution systems are evaluated to address the key properties that might impact hazard and risk factors. ASME (American Society of Mechanical Engineers) standards B31.8 and ASME B31.12 are reviewed for key differences applicable to HCNG blends. A methodology to identify compliance gaps and mitigate deficiencies if HCNG blends are transported in natural gas transportation systems is proposed.

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Section: Metal Welding and Hardness Requirementsmentioning

confidence: 99%

Section: Materials Of Construction For Pipelinesmentioning

confidence: 99%

Ensuring natural gas infrastructure is suitable for hydrogen service

Ott

Delafontaine

Welchert

et al. 2023

Process Safety Progress

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“…Some projects have already been carried out to study the practical implementation of HENG within a main gas supply in Europe. ,− Domestic gas appliances proved to be compatible with HENG containing up to 20% H 2 in the NaturalHy project . A low, fixed range of hydrogen addition percentage is not feasible for real future applications, and a larger, variable hydrogen percentage must be considered.…”

Section: Technologies To Improve Thermal Efficiencymentioning

confidence: 99%

Comprehensive Review on Thermal Performance Enhancement of Domestic Gas Stoves

Gao

Yan

et al. 2023

ACS Omega

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Cooking is a daily activity in every household, which consumes energy and produces pollution. Using clean gas fuels instead of traditional solid fuels will significantly reduce household air pollution. Although the use of clean-burning burners can reduce emissions, early domestic gas cookers had poor thermal performance. Currently, even small improvements in efficiency can result in significant energy savings due to the large number of domestic gas stoves in use. There has been a long history of research into the development of domestic gas stoves to improve performance and reduce energy consumption. Meanwhile, research into the use of hydrogen-enriched natural gas as a promising environmentally friendly fuel is increasing. In this paper, we perform a descriptive statistics and graphical visualization of network analysis by combining common databases with Bibliometrix. We also analyze the energy balance of domestic gas stoves and the influence of a single factor and multiple factors on stove performance. Then we provide a detailed overview of some research technologies in enhancing the thermal performance of gas stoves. We also discuss the research progress and application prospects for the use of hydrogen-enriched natural gas as a fuel in domestic gas stoves and identify areas for future research and issues that need attention.

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“…Shirvill et al [43] observed that the maximum overpressures generated by methanehydrogen mixtures with 25% by volume or less hydrogen content, are not likely to be significantly greater than those generated by methane alone. Their work suggested that the addition of less than 25% by volume of hydrogen into pipeline networks would not significantly increase the risk of explosion.…”

Section: Safety 261 Combustion Issuesmentioning

confidence: 99%

Hydrogen Blending in Gas Pipeline Networks—A Review

et al. 2022

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Replacing fossil fuels with non-carbon fuels is an important step towards reaching the ultimate goal of carbon neutrality. Instead of moving directly from the current natural gas energy systems to pure hydrogen, an incremental blending of hydrogen with natural gas could provide a seamless transition and minimize disruptions in power and heating source distribution to the public. Academic institutions, industry, and governments globally, are supporting research, development and deployment of hydrogen blending projects such as HyDeploy, GRHYD, THyGA, HyBlend, and others which are all seeking to develop efficient pathways to meet the carbon reduction goal in coming decades. There is an understanding that successful commercialization of hydrogen blending requires both scientific advances and favorable techno-economic analysis. Ongoing studies are focused on understanding how the properties of methane-hydrogen mixtures such as density, viscosity, phase interactions, and energy densities impact large-scale transportation via pipeline networks and end-use applications such as in modified engines, oven burners, boilers, stoves, and fuel cells. The advantages of hydrogen as a non-carbon energy carrier need to be balanced with safety concerns of blended gas during transport, such as overpressure and leakage in pipelines. While studies on the short-term hydrogen embrittlement effect have shown essentially no degradation in the metal tensile strength of pipelines, the long-term hydrogen embrittlement effect on pipelines is still the focus of research in other studies. Furthermore, pressure reduction is one of the drawbacks that hydrogen blending brings to the cost dynamics of blended gas transport. Hence, techno-economic models are also being developed to understand the energy transportation efficiency and to estimate the true cost of delivery of hydrogen blended natural gas as we move to decarbonize our energy systems. This review captures key large-scale efforts around the world that are designed to increase the confidence for a global transition to methane-hydrogen gas blends as a precursor to the adoption of a hydrogen economy by 2050.

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Experimental study of hydrogen explosion in repeated pipe congestion – Part 2: Effects of increase in hydrogen concentration in hydrogen-methane-air mixture

Cited by 60 publications

References 11 publications

Ensuring natural gas infrastructure is suitable for hydrogen service

Ensuring natural gas infrastructure is suitable for hydrogen service

Comprehensive Review on Thermal Performance Enhancement of Domestic Gas Stoves

Hydrogen Blending in Gas Pipeline Networks—A Review

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