Thermodynamic analysis of the gas parameters distribution under leakage from a closed volume with rigid walls

¹ Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, 49005, Dnipro, Simferopolska Str., 2a, Ukraine
² Dnipro National University of Railway Transport named after Academician V. Lazaryan, 49010, Dnipro, Lazaryana Str., 2, Ukraine
³ CICRAUN Internationally, 10005, New York, Wall Str., 30, USA
⁴ Institute of Strategic Technologies named after academician S.M. Koniukhov, 49005, Dnipro, Simferopolska Str., 15, Ukraine

^* Corresponding author: ovpt106@gmail.com

Abstract

The work deals with the thermodynamic analysis of the parameters of the gas in a closed volume with rigid walls, during its leakage and heat exchange with the environment. Based on the first law of thermodynamics, the law of Fick and the equation of the gas state, we obtained an equation that characterizes the effect of temperature gradient on the mass gas leakage in parallel processes of leakage and heat transfer. The regularity of the leakage coefficient change, determined by the diffusion coefficient, depending on the mass-average temperature in a closed thermodynamic system, is established. The variation of the leakage coefficient for the corresponding ranges of temperature gradients are shown. The research results can be implemented in the development of techniques and technologies for monitoring the tightness of hollow products under excessive pressure of the gas medium.