The Paton Welding Journal, 2026, №01

2026 №01 (05)

DOI of Article 10.37434/tpwj2026.01.06

2026 №01 (01)

---

The Paton Welding Journal, 2026, #1, 39-46 pages

Improvement of the method for natural gas quality control

I.V. Rybitsky¹, O.M. Karpash¹, S.S. Voitenko¹, M.O. Karpash², P.M. Raiter³, A.V. Yavorskyi³, I.R. Vashchyshak³

¹Ivan Kozhedub Kharkiv National Air Force University 123 Poltavskyi Shliakh Str., 61123, Kharkiv, Ukraine. E-mail: rybitsky@gmail.com
²King Danylo University, 35 Yevhena Konovaltsia Str., 76018, Ivano-Frankivsk, Ukraine
³Ivano-Frankivsk National Technical University of Oil and Gas 15 Karpatska Str., 76019, Ivano-Frankivsk, Ukraine

Abstract
orific values — is currently driven by the requirements of the Law of Ukraine regulating the introduction of accounting and settlements on the natural gas market based on gas volume in energy units. This paper presents the results of research aimed at improving the method of rapid (express) control of the higher and lower calorific values of natural gas in compliance with the requirements of the Law of Ukraine “On the Natural Gas Market”. It is shown that the applied circuit-design solutions make it possible to significantly reduce measurement error, to implement the capability of measuring not only the lower but also the higher calorific value of natural gas, and to expand the application range of the developed device for both industrial and household conditions.
Keywords: natural gas quality, measurement, ultrasonic oscillations, accuracy improvement, trigger, temperature dependence

Received: 15.09.2025
Received in revised form: 03.11.2025
Accepted: 06.01.2026

References

1. Forbes: Natural Gas is Critical to Achieving Global Climate Goals. Here's Why. https://www.forbes.com/sites/kensilverstein/2024/09/09/natural-gas-is-critical-to-achieving-globalclimate-goal-heres-why/
2. DSTU EN 16723-1:2023: Natural gas and biomethane for use in transport and biomethane for injection into the natural gas network. Pt 1. Technical characteristics of biomethane for injection into the natural gas network (EN 16723-1:2016, IDT) [in Ukrainian].
3. Code of the gas transport system [in Ukrainian]. https://zakon.rada.gov.ua/laws/show/z1378-15#n18
4. Law of Ukraine "On Amendments to Certain Laws of Ukraine Regarding the Introduction of Accounting and Settlements on the Natural Gas Market by Gas Volume in Energy Units". Vidomosti Verkhovnoi Rady (VVR), 2022, 5, 30 [in Ukrainian]. https://zakon.rada.gov.ua/laws/show/1850-20#Text
5. Maksymiuk, S., Rybitskyi, I., Karpash, O. et al. (2024) Method for estimating the calorific value of natural gas for branched networks using express quality control tools. Eds by V. Babak, A. Zaporozhets. In: Systems, Decision and Control in Energy VI. Studies in Systems, Decision and Control, Vol. 561. Springer, Cham. https://doi.org/10.1007/978-3-031-68372-5_16
6. Reiter, P.M., Karpash, O.M., Yavorsky, A.V. et al. (2014) Natural gas: Innovative solutions for sustainable development: Monograph. Ed. by O.M. Karpash. Ivano-Frankivsk, IFNTUNG [in Ukrainian].
7. Rybitskyi, I.V., Karpash, O.M., Karpash, M.O. (2020) Modeling the possibility of measuring the higher calorific value of natural gas using available informative parameters. Metody ta Prylady Kontroliu Yakosti, 1(44), 147-154 [in Ukrainian]. https://doi.org/10.31471/1993-9981-2020-1(44)-147-154
8. Karpash, M.O. (2010) Method for express-determination of heat of combustion of natural gas. Pat. UA, 92846 [in Ukrainian].
9. David, J., Cheeke, N. (2002) Fundamental and Application of Ultrasonic Waves. CRC Series in Pure and Applied Physics. CRC Press LLS.
10. Lokesh Soni, Neeta Pandey (2024) A low power Schmitt-trigger driven 10T SRAM Cell for high speed applications. Integration, 97, 102187.s https://doi.org/10.1016/j.vlsi.2024.102187s
11. (2009) dsPIC33FJXXXGPX06/X08/X10: Data Sheet High-Performance, 16-Bit Digital Signal Controllers. Microchip Technology Inc. https://ww1.microchip.com/downloads/en/ DeviceDoc/70286C.pdf

---

Suggested Citation

I.V. Rybitsky, O.M. Karpash, S.S. Voitenko, M.O. Karpash, P.M. Raiter, A.V. Yavorskyi, I.R. Vashchyshak (2026) Improvement of the method for natural gas quality control. The Paton Welding J., 01, 39-46.

---