IMPROVING THE ENERGY EFFICIENCY OF GAS BOILERS THROUGH THE USE OF VARIABLE-COMPOSITION FUEL MIXTURES

Taia Petik; Viktor Bielov; Sukhan Ruslan; Oleksii Nakoriakov

doi:10.36074/grail-of-science.26.12.2025.060

IMPROVING THE ENERGY EFFICIENCY OF GAS BOILERS THROUGH THE USE OF VARIABLE-COMPOSITION FUEL MIXTURES

Authors

Taia Petik Odesa Polytechnic National University Odesa, Ukraine https://orcid.org/0009-0001-8817-1706
Viktor Bielov Odesa Polytechnic National University Odesa, Ukraine https://orcid.org/0009-0001-5524-3830
Sukhan Ruslan Odesa Polytechnic National University Odesa, Ukraine https://orcid.org/0009-0007-9390-332X
Oleksii Nakoriakov Odesa Polytechnic National University Odesa, Ukraine

DOI:

https://doi.org/10.36074/grail-of-science.26.12.2025.060

Keywords:

mixed gas fuel combustion, low-calorific gases, fuel calorific value, flue gases, boiler efficiency, fuel mixture, energy efficiency, steam boiler

Summary

The article presents a method for improving the energy efficiency and controllability of the thermal load of gas-fired steam boilers by regulating the composition of the fuel mixture through the introduction of low-calorific gases. The research encompasses an analysis of the influence of changes in the mixture's calorific value on the volume and temperature of flue gases, as well as on the boiler efficiency. Based on chemical and thermal engineering models, a methodology for calculating quality indicators and thermal efficiency during the combustion of mixtures of natural gas with blast furnace, coke oven, producer, and pyrolysis gases has been developed. The calculations showed that the use of blast furnace gas allows for maintaining a constant volume of flue gases over a wide load range, stabilizing their temperature, and reducing fluctuations in efficiency. It is also demonstrated that gas mixing can contribute to reducing specific CO₂ emissions and improving the environmental characteristics of the boiler installation. The obtained results confirm the feasibility of using fuel mixture control methods as an effective tool for the thermodynamic optimization of industrial steam generators

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References

Beglov, K., Kozlov, O., Kondratenko, Y., Markolenko, T., & Kryvda, V. (2023). Automatic control of the boiler heat power based on changing hydrocarbon fuelʼs calorific value. International Scientific Technical Journal Problems of Control and Informatics, 68(2), 75–92. https://doi.org/10.34229/1028-0979-2023-2-6 DOI: https://doi.org/10.34229/1028-0979-2023-2-6

Bezhan, V., & Zhitarenko, V. (2020). Modeling and Analysis of Energy Efficiency Parameters of Medium Pressure Boilers Using a Mixture of Natural and Blast Furnace Gases Taking into Account Air Intakes. NTU KhPI Bulletin Power and Heat Engineering Processes and Equipment, 0(2), 32–39. https://doi.org/10.20998/2078-774x.2020.02.05 DOI: https://doi.org/10.20998/2078-774X.2020.02.05

Brunetkin, O., Maksymov, M., Maksymova, O., & Zosymchuk, A. (2017a). Development of a method for approximate solution of nonlinear ordinary differential equations using pendulum motion as an example. Eastern-European Journal of Enterprise Technologies, 5(4 (89)), 4–11. https://doi.org/10.15587/1729-4061.2017.109569 DOI: https://doi.org/10.15587/1729-4061.2017.109569

Brunetkin, O., Maksymov, M., Maksymova, O., & Zosymchuk, A. (2017b). Development of the method of approximate solution to the nonstationary problem on heat transfer through a flat wall. Eastern-European Journal of Enterprise Technologies, 6(5 (90)), 31–40. https://doi.org/10.15587/1729-4061.2017.118930 DOI: https://doi.org/10.15587/1729-4061.2017.118930

Kryvda, V., Brunetkin, O., Beglov, K., Markolenko, T., & Lutsenko, I. (2024). Method of controlling the volume of combustion products at different boiler loads. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 1, 100–104. https://doi.org/10.33271/nvngu/2024-1/100 DOI: https://doi.org/10.33271/nvngu/2024-1/100

Lavrentsov, E., Sigal, I., Smikhula, A., Dombrowska, E., Kernazhytska, O., & Marasin, O. (2019). EXPERIENCE OF DEVELOPMENT, IMPLEMENTATION AND MODERNIZATION OF HOT WATER SUPPLY BOILERS WITH DUAL-SCREENS AND THE SLOT BOTTOM BURNERS. Energy Technologies & Resource Saving, 3, 17–26. https://doi.org/10.33070/etars.3.2019.02 DOI: https://doi.org/10.33070/etars.3.2019.02

Markolenko, T. D., & Prodanov, D. G. (2024). Model of greenhouse gas emission minimization under variable load of a steam boiler. INFORMATICS AND MATHEMATICAL METHODS IN SIMULATION, 14(4), 284–295. https://doi.org/10.15276/imms.v14.no4.284 DOI: https://doi.org/10.15276/imms.v14.no4.284

Markolenko, T. D., Prodanov, D. G., & Beglov, Y. I. (2025). Boiler thermal load control during the combustion of solid household waste. ELECTRICAL AND COMPUTER SYSTEMS, 42(118), 43–51. https://doi.org/10.15276/eltecs.42.118.2025.5 DOI: https://doi.org/10.15276/eltecs.42.118.2025.5

Sigal, I., Smikhula, A., Marasin, O., Gurevich, M., & Lavrentsov, E. (2022). METHODS TO REDUCE NOX FORMATION DURING GAS COMBUSTION IN BOILERS. Energy Technologies & Resource Saving, 4, 62–72. https://doi.org/10.33070/etars.4.2022.06 DOI: https://doi.org/10.33070/etars.4.2022.06

Сігал, І. Я., Сміхула, А. В., Марасін, А. В., Лавренцов, Є. М., & Домбровська Е. П. (2017). Модернізація газових котлів ТЕС, ТЕЦ та котелень відповідно до вимог екологічних директив ЄС. Енерготехнології та ресурсозбереження. 4. 61-71. URL: http://jnas.nbuv.gov.ua/article/UJRN-0001028957