THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Jintao Wu

,

Fu Liang

,

Xiaolin Ao

,

Neng Gan

,

Wang Xie

MOLECULAR DYNAMICS STUDY ON THE EVAPORATION OF ETHANE, PROPANE AND THEIR MIXED FLUIDS AT THE COPPER SUBSTRATE

ABSTRACT
The organic Rankine cycle can harvest the cold energy from liquefied natural gas by using non-azeotropic working fluids. The phase transition is one of the important processes in the thermodynamics cycles. In this paper, the interfacial evaporation characteristics of ethane, propane, and their mixtures were investigated by molecular dynamics simulations. Several properties, including surface tension, diffusion coefficient, interaction energy were analyzed. The results show that the addition of ethane in the mixed working fluid increases the evaporation rate of propane, and the gas-liquid interfacial thermal resistance is relatively large in the total thermal resistance. The pure ethane system has the smallest thermal resistance, surface tension, intermolecular interaction energy and the largest diffusion coefficient, which make the evaporation energy barrier smaller.
KEYWORDS
liquefied natural gas, mixed working fluid, evaporation, molecular dynamics
PAPER SUBMITTED: 2024-08-19
PAPER REVISED: 2024-10-21
PAPER ACCEPTED: 2024-10-24
PUBLISHED ONLINE: 2024-12-07
DOI REFERENCE: https://doi.org/10.2298/TSCI240819266W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2025, VOLUME 29, ISSUE Issue 4, PAGES [2535 - 2546]
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Molecular dynamics study on the evaporation of ethane, propane and their mixed fluids at the copper substrate

2025 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence