Кафедра екології, теплотехніки та охорони праці (ДМетІ)

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ENG: The department of Ecology, Heat-Transfer and labour protection (DMetI)

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Research on the Efficiency of Hydrogen Combustion, Alternative and Natural Non-Interchangeable Gases
(The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv, 2025) Kolienko, Anatoliy G.; Sigal, O. I.; Gupalo, Olena V.; Akhmednabiev, Rasul M.
ENG: The results of determining the gas interchangeability criterion are presented. An analysis of the possibility of adapting existing gas combustion plants for the effective and stable use of a wide range of combustible gases is performed. It is shown that even natural gases from different deposits are not always interchangeable. Recommendations are developed that allow the use of even non-interchangeable gases on the same gas combustion equipment by changing the operating settings or slightly changing the design characteristics of the equipment. The results of the study of heat transfer in the combustion space when the composition of combustible gases changes and the associated changes in the emissivity of combustion products are presented. Recommendations are given on the organization of the combustion process of non-interchangeable gases, including by creating mixtures of combustible gases with the provision of the necessary interchangeability criteria. The purpose of the work is to study the possibility of effective combustion of alternative types of artificial and synthetic combustible gases, including hydrogen, as well as non-interchangeable natural gases in existing gas combustion equipment. Study of the properties of combustible gases characteristic of gas distribution systems of Ukraine, and their compliance with the inter-changeability criteria and gas combustion equipment manufactured and supplied for industrial and municipal purposes. The relevance of the issues of ensuring the interchangeability of gases is confirmed by the implementation of regulatory legal acts on the quality indicators of combustible gases and the efficiency of their use in the national legislation of Ukraine. The results of the study provide the possibility of a barrier-free gradual introduction of alternative types of gases and a gradual transition to the combustion of gases with hydrogen content without cardinal changes in the design of existing burners and their operating modes. Bibl. 26, Fig. 2, Tab. 5.
Synergy of Secondary Energy Resource Utilization and Hydrogen Technology for Reducing the Carbon Footprint of Industrial Thermal Units
(IOP Publishing Ltd, 2026) Kolienko, Anatoliy G.; Gupalo, Olena V.; Akhmednabiev, Rasul M.
ENG: The article presents research results focused on improving energy efficiency and reducing the carbon footprint during pellet burning in rotary kilns. The study includes experimental kiln production, development of its energy balance, analysis of energy loss components, assessment of renewable and non-renewable energy losses, and determination of greenhouse gas emissions. The influence of operating parameters on kiln efficiency was examined, and their optimal values were identified. The thermal potential of secondary energy resources at the pellet burning plant was evaluated. A waste-heat utilization scheme for municipal and domestic heating and hot water supply was proposed. The study also establishes dependencies demonstrating the potential for reducing CO2 emissions when substituting natural gas with a mixture containing reducing hydrogen. Research results on lowering the carbon footprint by burning environmentally neutral biomass are presented, along with practical recommendations. The scientific and applied outcomes of the work enable the development of measures aimed at decarbonization and enhancing the efficiency of rotary kilns used for pellet burning in mining and metallurgical enterprises.