Theoretical and applied aspects of using a thermal pump effect in gas pipeline systems

Authors

DOI:

https://doi.org/10.15587/1729-4061.2018.121667

Keywords:

gas transmission system, inter-strand bridge, throttle effect, thermal pump, electrohydraulic analogy, mathematical model of gas transmission in pipelines

Abstract

Based on the classical method for calculating parameters of gas pipelines using electrohydraulic analogy, a mathematical model of the object, the process of gas transmission in an industrial pipeline, has been developed. The study subject was the change of gas temperature after its passing through a throttling device which brings about thermal pump effect in the receiving strand of the gas pipeline. It was proposed to use gas-dynamic thermal pumps to minimize the risk of plug and hydrate formation in the gas pipeline of Kharkivtransgaz Co. It was shown that the change of the ground body temperature by ±10 °C in the 20 km long gas transmission section of the multi-strand pipeline system causes a change of gas pressure by 5−15 %. A theoretical-empirical formula for determining the Joule-Thomson coefficient was derived which allows one to estimate the thermal pump effect on the energy and thermobaric parameters of nonstationary gas transmission processes. It was determined that the integral coefficient of performance (COP) for the network system of multi-strand pipelines including gas-dynamic thermal pumps varies within the range of 1.00‒1.09 depending on the ambient temperature (0−20 oC). The principles of constructing the topology of the diagram of the gas pipeline with bridges and branches which, due to the use of the thermal pump effect, ensures a minimal risk of plugging and hydration consist in activation and regulation of the energy-transforming and heat exchange processes in the sections of the network system. This is achieved by introduction of additional throttling devices in front of the bridges and branches of the pipeline and by checking for proximity and bordering with critical temperatures of plug and hydrate formation.

Author Biographies

Mykhailo Fyk, National Technical University "Kharkiv Polytechnic Institute" Kyrpychova str., 2, Kharkiv, Ukraine, 61002

PhD, Associate Professor

Department of oil, gas and condensate extraction 

Ilya Fyk, National Technical University "Kharkiv Polytechnic Institute" Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Professo

Department of oil, gas and condensate extraction 

Volodymyr Biletsky, National Technical University "Kharkiv Polytechnic Institute" Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Professor

Department of oil, gas and condensate extraction

Max Oliynyk, Kryvyi Rih National University Vitaliya Matusevycha str., 11, Kryvyi Rih, Ukraine, 50027

PhD, Senior Lecturer

Department of mineral processing and chemistry

Yulia Kovalchuk, Kyiv National University of Construction and Architecture Povitroflotsky ave., 31, Kyiv, Ukraine, 03037

PhD, Associate Professor

Department of Chemistry

Volodymyr Hnieushev, National University of Water and Environmental Engineering Soborna str., 11, Rivne, Ukraine, 33028

PhD, Associate Professor

Department of Occupational Safety and Security of Life

Yevhen Shapchenko, UMG "Kharkivstransgaz" Kultury str., 20A, Kharkiv, Ukraine, 61001

Specialist in heat and gas supply, ventilation and air conditioning, Chief Dispatcher

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Published

2018-01-24

How to Cite

Fyk, M., Fyk, I., Biletsky, V., Oliynyk, M., Kovalchuk, Y., Hnieushev, V., & Shapchenko, Y. (2018). Theoretical and applied aspects of using a thermal pump effect in gas pipeline systems. Eastern-European Journal of Enterprise Technologies, 1(8 (91), 39–48. https://doi.org/10.15587/1729-4061.2018.121667

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Section

Energy-saving technologies and equipment