Mixed Fuel for Household Gas-Powered App liances as an Option to Replace Natural Gas with Hydrogen
Keywords:atmospheric burner, efficiency of fuel use, environmental characteristics of flue gases, gas cooker, heating boiler, hydrogen as alternative fuel, interchangeability of fuel gases, laminar burning velocity.
Introduction. In the opinion of world expert association, the global warming of boundary layer within the system of “Earth’s surface — ambient atmospheric air” has been caused by the effect of carbon-containing components (mainly CO2) referred to as greenhouse gas (along with H2O) and by the redistribution of radiative heat fluxes
within the environment.
Problem Statement. The principal sectors of economics influencing upon the greenhouse gas emission include an industry, electric and heat power generation, means of transport. However, in the Ukrainian conditions, the municipal and household gas supplying sector is of special significance given the structure and the main constituents of the national fuel balance, particularly in the case where a reduction in CO2
emissions is attained by carbohydrate fuel substitution with hydrogen.
Purpose. The purpose of this research is to determine the opportunities for safe operation conditions and the prospects for natural gas substitution with hydrogen by supplying household gas-powered appliances (HGA)
with mixed fuel and to experimentally study the feasibility (efficiency) and HGA environmental characteristics (harmful gas CO and NOx emissions).
Materials and Methods. The problem of environment decarbonization nowadays has been solved by substitution the natural gas (NG) with NG (methane) blended with hydrogen. The household gas devices: RÖDA heating boiler (Germany) and GRETA gas cooker stove (Ukraine) have been tested in terms of combustion of the MG (air mix containing up to 50% (vol.) [H2]) as compared with pure NG.
Results. The moderate impact of [H2] content in fuel gas in terms of power and environmental characteristics of HGA by varying the [H2] fraction within the range of [H2] = 0—50% (vol.) has been stated.
Conclusions. For the first time, the theoretically predicted possibility of safe operation of HGA with the use of methane-hydrogen mixes with [H2] content up to 50% has been experimentally proved. The boiler efficiency in terms of fuel consumption grows with increasing heat capacity, in contrast to the extreme dependence of the gas
stove efficiency on heat capacity.
Huber, A. (2021). Іmpact of hydrogen and mixtures of hydrogen and natural gas on forced draught gas burners. Heat processing, 1, 27-32.
Siddi, M. (2020). The European Green Deal: Assessing its current state and future implementation. FIIA working paper, 114, 1-14.
European Green Deal URL: https://ec.europa.eu/info/sites/default/files/european-green-deal-communication_en.pdf (Last accessed: 11.07.2021).
Hermanns, R. T. E. (2007). Laminar burning velocities of methane-hydrogen-air mixtures. Eindhoven: Technische Universiteit Eindhoven. https://doi.org/10.6100/IR630126
Bounaceur, R., Glaude, P. A., Sirjean, B., Fournet, R., Montagne, P., Vierling, M., Molière, M. (2015) Prediction of autoignition temperatures and delays for gas turbine applications. Proceedings of ASME Turbo Expo 2015: Turbine technical conference and exposition GT2015 (June 15-19, Montreal, Canada). GT2015-42011. https://doi.org/10.1115/1.4031264
A Hydrogen Strategy for a climate neutral Europe. URL: https://ec.europa.eu/commission/presscorner/detail/en/ fs_20_1296 (Last accessed: 11.07.2021).
Germany and hydrogen - €9 billion to spend as strategy is revealed URL: https://www.dw.com/en/germany-and-hydrogen-9-billion-to-spend-as-strategy-is-revealed/a-53719746 (Last accessed: 11.07.2021).
Collaboration Between the United States and the Netherlands Focuses on Hydrogen Technology URL: https://www. energy.gov/eere/articles/collaboration-between-united-states-and-netherlands-focuses-hydrogen-technology (Last ac cessed: 11.07.2021).
Larson, A. (2020). Is Hydrogen the Power Industry's Holy Grail. Power. URL: https://www.powermag.com/is-hydrogen-the-power-industrys-holy-grail/ (Last accessed: 11.07.2021).
Wunning, J. G. (2021). Future heating of industrial furnaces. Heat processing, 1, 23-25.
Pancaldi, R. (2020). Let us join efforts for achieving a sustainable metals production. Heat Processing, 4, 1.
Soroka, B., P'yanikh, K., Zgursky, V., Gorupa, V., Kudryavtsev, V. (2020). Energy and environmental characteristics of household gas facilities using methane and hydrogen mix as a fuel gas. Oil & gas industry of Ukraine, 6, 3-13 [in Ukrainian]. https://doi.org/10.1016/S1464-2859(20)30258-3
European Clean Hydrogen Alliance. URL: https://ec.europa.eu/growth/industry/policy/european-clean-hydroge n-alliance_en (Last accessed: 11.07.2021).
Helping to decarbonize the global energy mix with increased hydrogen use. URL: https://www.gti.energy/hydrogentechnology-center/expertise/ (Last accessed: 11.07.2021).
Altfeld, K., Pinchbeck, D. (2013). Admissible hydrogen concentrations in natural gas systems. Gas for energy, 3, 1-12.
Avacon starts Pilot project in Saxony-Anhalt. URL: https://www.avacon.de/de/ueber-uns/newsroom/pressemit teilungen/erstmalig-bis-zu-20-prozent-wasserstoff-in-einem-deutschen-gasve.html (Last accessed: 19.07.2021).
Pioneering hydrogen blending energy project at Keele University has successfully completed. URL: https://www.keele. ac.uk/discover/news/2021/march/hydeploy-ending/hydrogen-gas-network.php (Last accessed: 19.07.2021).
Tommy, I. (2019). HyDeploy: The UK's First Hydrogen Blending Deployment Project. Clean Energy, 3(2), 114-125. https://doi.org/10.1093/ce/zkz006 https://doi.org/10.1093/ce/zkz006
GOST R 500696-2006. (2006). Household gas appliances for cooking. General technical requirements and test methods. Household cooking appliances burning gas. General technical requirements and test methods. Standartynform [in Russian].
Aksyutin, O., Ishkov, A., Khloptsov, V., Ghazaryan, V., Stolyarevsky, A. (2012, June). The concept of large-scale development of innovative systems for the production and distribution of methane-hydrogen fuel as an efficient alternative energy source. 25th World Gas Conference: Kuala Lumpur, 1-13 URL: https://www.ccortes.ru/st_docs/klumpur2012. pdf. (Last accessed: 19.07.2021) [in Russian].
Why low-cost renewables don't mean the end of subsidies. URL: https://energymonitor.ai/tech/renewables/why-lowcost-renewables-dont-mean-the-end-of-subsidies (Last accessed: 11.07.2021).
Warnatz, J., Maas, U., Dibble, R. W. (2006). Combustion: Physical and chemical Fundamentals, Modeling and Simulations, Experiments, Pollutant Formation. Springer. https://doi.org/10.1007/978-3-540-45363-5. https://doi.org/10.1007/978-3-540-45363-5
Soroka, B., Zgurskyi, V., Kozlov, A., Khinkis, M. (2017). Preventing autoignition inside the burner with high-temperature oxidant preheating. International Journal of Energy for a Clean Environment, 18(2), 113-122. https://doi.org/10.1615/InterJEnerCleanEnv.2017020747
Soroka, B. S., Gorupa, V. V. (2020). Energy efficiency the systems for a liquid heating by gas combustion with atmospheric burners using. Proceedings of scientific works of the XVI International scientific and-practical conference "Coal heat engineering: ways of reconstruction and development", 77-80 [in Russian].
DSTU 2204-93 "Gas household stoves. General technical conditions" [in Ukrainian].
Erinov, A. E., Soroka, B. S. (1970). Rational methods of combustion the gas fuel in reheating furnaces. Kyiv: "Tekhnika" Pubblishing House, 249 p. [in Russian].
Soroka, B. S., Horupa, V. V. (2020). Environmental Characteristics of Modern Systems of Household Use of Fuel. Part 2. Pollutants Formation by Natural Gas Combustion in Atmospheric Burners: Experimental Studies. ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations, 63(5), 450-461. https://doi.org/ 10.21122/ 1029-7448-2020-63-5-450-461 [in Russian]. https://doi.org/10.21122/1029-7448-2020-63-5-450-461