INFLUENCE OF GAS MIXTURES OF HYDROGEN WITH METHANE ON THE OPERATIONAL AND THERMOPHYSICAL CHARACTERISTICS OF POLYETHYLENE PIPES OF OPERATING GAS DISTRIBUTION NETWORKS OF UKRAINE

• DOI: 10.33070/etars.2.2023.08
• Publication Date: 2023-06-30T21:00:50Z
• Authors: M.V. Iurzhenko; M.O. Kovalchuk; V.Yu. Kondratenko; V.L. Demchenko; A.M. Pylypenko; K.H. Gusakova; H.V. Zhuk; V.S. Verbovskyi; O.V. Hopachenko; I.A. Gotsyk
• Keywords: 02 engineering and technology; 0210 nano-technology

The paper presents the results of complex studies influence mixtures hydrogen gas with natural in ratios 10%Н2/90%СН4 and 20%Н2/80%СН4 on operational thermophysical characteristics PE-80 polyethylene pipes their material Research was conducted an experimental stand, diagram which is attached. comprehensive strength pipes, were previously operated current distribution networks Ukraine for 15 years, after 6 months exposure, are presented. In order to indicate possible changes properties material, same carried out before exposure samples. has been established, manifested reduction size crystallites orderliness volume pipe walls under mixtures. At time, appearance a new shape found surface inner wall pipes. It assumed that this may be caused by competing action methane molecules. course conducting hydraulic tests resistance internal pressure mechanical uniaxial tension, it determined all samples, according characteristics, meet requirements regulatory documents issued used transportation. relationship between concentration mixture degree its samples established. No chemical structure detected. should noted given only beginning more detailed study, during also planned investigate effect technical polyethylenes 12 24 exposure. Bibl. 17, Fig. 11, Tab. 2.