DSpace Collection: http://elar.nung.edu.ua/handle/123456789/3417 Fri, 03 Apr 2026 20:54:14 GMT 2026-04-03T20:54:14Z DSpace Collection: http://elar.nung.edu.ua:80/retrieve/15797/ngu_2013_4_1-1.jpg http://elar.nung.edu.ua/handle/123456789/3417 Exhaust gases heat recovery of GPU gas turbine compressor of gas-main pipelines http://elar.nung.edu.ua/handle/123456789/3516 Title: Exhaust gases heat recovery of GPU gas turbine compressor of gas-main pipelines Authors: Redko, А. О .; Redko, О. F.; Kompan, А. І. Abstract: The choice of the rational heating scheme of gas turbine exhaust-gas heat utilization of main gas pipeline gas-compressor units is one of the actual problems of increasing energy efficiency of gas transportations. A number of well-known publications state that problem solution can not be considered to be completed, some results of investigation being conflicting and requiring more precise definition, taking into consideration that the processes of converting low potential heat into electric power are considerably complex. The thermodynamic efficiency and various parameter influences are also analyzed. The choice of the plant working-medium at the temperature of exhaust gases of 350-380C is explained in detail. Tue, 01 Jan 2013 00:00:00 GMT http://elar.nung.edu.ua/handle/123456789/3516 2013-01-01T00:00:00Z Replacement of buffer gas with nitrogen in gas storage formations (models, methods, numerical experiments) http://elar.nung.edu.ua/handle/123456789/3515 Title: Replacement of buffer gas with nitrogen in gas storage formations (models, methods, numerical experiments) Authors: Prytula, N. M.; Hryniv, O. D.; Vecherik, R. L.; Boiko, R. V. Abstract: The paper gives description of the object of study - reservoir of the underground gas storage facility. A problem of replacement of buffer gas with nitrogen is raised and the problem formulations for its candidate solution are shown. A mathematical model of replacing buffer gas with nitrogen is proposed, which includes filtering model and convection model - diffusion of gases with concentrated sources. For the cases of unmixing gases the algorithm was developed for finding the propagation path of nitrogen. Numerical experiments were carried out. Tue, 01 Jan 2013 00:00:00 GMT http://elar.nung.edu.ua/handle/123456789/3515 2013-01-01T00:00:00Z Influence of installation elastic bending on stress-strain state of pipeline aboveground passages in mountains http://elar.nung.edu.ua/handle/123456789/3514 Title: Influence of installation elastic bending on stress-strain state of pipeline aboveground passages in mountains Authors: Bilobran, B. S.; Dziubyk, А. R.; Yanovskyi, S. R. Abstract: The experiment-calculated methods of diagnosing stress-strain state of the pipeline aboveground beam passages are shown. By the example of pipeline aboveground passage in the Carpathians the influence of installation elastic bending on its stress-strain state was studied. Tue, 01 Jan 2013 00:00:00 GMT http://elar.nung.edu.ua/handle/123456789/3514 2013-01-01T00:00:00Z About the conception of underground gas storage in Ukraine http://elar.nung.edu.ua/handle/123456789/3511 Title: About the conception of underground gas storage in Ukraine Authors: Storchak, S. О.; Zaiets, V. О.; Savkiv, B. P. Abstract: New conception of underground storage is proposed. It includes formation of gas hub on the base of West Ukrainian complex of underground gas storage facilities, situated in the centre of Europe. Tue, 01 Jan 2013 00:00:00 GMT http://elar.nung.edu.ua/handle/123456789/3511 2013-01-01T00:00:00Z