Наукові статті

Applying a dimensional analysis method for implementing the gas hydrate technology when transporting and storing natural gas

Педченко, Л.О.

This study’s object is the process parameters for the forced conservation of gas hydrate by a layer of ice to ensure its stability under non-equilibrium conditions. These conditions are atmospheric pressure and a slight negative temperature. However, the application of water in the liquid phase and its subsequent crystallization, with the release of a correspond ing amount of process energy, is accompanied by the dissociation of the surface layer of gas hydrate, and therefore the loss of gas. A decrease in the melting level of gas hydrate could be achieved by increasing the cooling level of gas hydrate structures. However, this increases the operating costs of the technology. This paper proposes a variant for substantiating the process parameters for the forced conservation of natural gas hydrate structures. To this end, by using the dimensionality analysis method, dimensionless complexes were established: Fourier crite rion (Fo); criterion characterizing the relative thermal con ductivity of bodies (Kε), Kosovich criterion (Ko), dimension less temperature criterion Θ1/Θ0, and the criterion equation. The coefficient and degrees of dimensionless complexes in the criterion equation were experimentally determined. They make it possible to describe the process of forced conservation of gas hydrate structures regardless of size and shape. The application of dimensionless dependences and criteri on equations could make it possible to determine in a simpli fied form parameters for the technological process of indus trial production of gas hydrate structures with the required properties (stability during transportation and storage under non-equilibrium thermobaric conditions without gas loss). Based on experimental studies, the limits of the applied parameters of the stability of gas hydrate structures under non-equilibrium conditions have been established. For them, the criterion of dimensionless temperature Θ1/Θ0 is with in 0.02–0.04

English

2025-08-30

математичне моделювання

Eastern-European Journal of Enterprise

Pedchenko L. Applying a dimensional analysis method for implementing the gas hydrate technology when transporting and storing natural gas / L. Pedchenko, N. Pedchenko, M. Pedchenko // Eastern-European Journal of Enterprise Technologies. – 2025. – Vol. 4, № 1 (136). – P. 32–41. – DOI: https://doi.org/10.15587/1729-4061.2025.336905

665. 612:622.691.2