The Impact of Hydrogen Admixture into Natural Gas on Residential and Commercial Gas Appliances

Leicher, Jörg; Schaffert, Johannes; Cigarida, Hristina; Tali, Eren; Burmeister, Frank; Giese, Anne; Albus, Rolf; Görner, Klaus; Carpentier, Stéphane; Milin, Patrick; Schweitzer, Jean

doi:10.3390/en15030777

Cited by 30 publications

(24 citation statements)

References 8 publications

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“…The properties of hydrogen and methane are summarized in Table . Hydrogen and natural gas (which mostly consists of methane) differ significantly in volumetric heating value, with a high heating value of 12.5 and 37.8 MJ/m 3 respectively, but the difference in Wobbe index is not significant, at 48.5 and 51.9 MJ/m 3 respectively. This will allow hydrogen to replace some of the natural gas without a significant impact on the heat input to the gas appliance .…”

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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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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“…Leicher et al [23] warned that the addition of hydrogen in natural gas changes the fuel gas properties, which, depending on the combustion system may raise the combustion temperatures and laminar combustion velocities. Appliances designed for natural gas may show risk of flashback, higher NOx emissions, and other safety concerns when switching to hydrogen enriched fuels.…”

Section: End-use Applications Of Methane-hydrogen Mixturesmentioning

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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“…The investigations that have been done thus far are largely theoretical, and the experimental component is necessary to validate the findings. Articles like [5][6][7][8][9][10][11][12][13][14][15] are valuable in the field, but they generally present numerical modeling or process simulations in specialized software, and in the situation where the data are obtained after conducting experiments, the effects of using the methane-hydrogen mixture on the operation of wall-mounted condensing boilers are not highlighted. Among the most challenging studies involved testing a variety of combustion devices to see how a hydrogen-natural gas mixture affected performance and emissions.…”

Section: Introductionmentioning

confidence: 99%

"Flow variation and fuel savings when using Hydrogen- Methane mixture as combustible in wall-mounted boilers’ operation"

CALOTĂ¹,

STĂNESCU²

2023

RRIC/RJCE

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The article presents a theoretical and experimental analysis that highlights how the employment of a hydrogen-methane mixture influences the variation of the fuel flow for wall-mounted boilers and also aims to evaluate whether fuel economy may be achieved. For a 28 kW condensing boiler, at 50/30 °C water outlet/inlet operating regime and for 2800 h functioning, 431 m 3 of methane gas were saved when using a 23% hydrogenmethane combustible. Correspondingly, at 80/60 °C working regime 599.3 m 3 of methane economy was achieved. The theoretical increasing of the combustible flow of 23,2% is validated by the value obtained experimentally of 22.84% respectively, when the mixture is utilized.

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The Impact of Hydrogen Admixture into Natural Gas on Residential and Commercial Gas Appliances

Cited by 30 publications

References 8 publications

Comprehensive Review on Thermal Performance Enhancement of Domestic Gas Stoves

Comprehensive Review on Thermal Performance Enhancement of Domestic Gas Stoves

Hydrogen Blending in Gas Pipeline Networks—A Review

"Flow variation and fuel savings when using Hydrogen- Methane mixture as combustible in wall-mounted boilers’ operation"

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