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ISBN: 978-1-56700-537-0

ISBN Online: 978-1-56700-538-7

ISSN Online: 2377-424X

International Heat Transfer Conference 17
August, 14-18, 2023, Cape Town, South Africa

Accurate measurement for transient heat and mass transfer in the vicinity of gas-liquid interface during acetone vaporization utilizing the phase-shifting interferometer

Get access (open in a dialog) DOI: 10.1615/IHTC17.250-50
9 pages

Sinopsis

Transient heat and mass transport phenomena near interface are one of the keys to understand the mass transport, energy balance and several conditions during phase transitions of volatile organic compounds. However, experimental evaluation of those transport phenomena is still challenging topic, which includes the interaction between heat and mass transfer. In this study, mass transport phenomenon considering temperature drop due to latent heat and pressure dependance were focused, and the diffusions of acetone to air and carbon dioxide (CO2) environment were visualized by the phase-shifting interferometer. Temperature drop effect on diffusion coefficient and refractive index was evaluated by comparing the experimental results and numerical simulation in case of acetone vaporization into air. As a results, transient heat and mass transfer of acetone vaporization in air could be visualized and acetone concentration at the gas-liquid interface reached to saturated concentration at 2.0 s after the injection. Acetone vaporization in CO2 under different pressure conditions were evaluated and it was indicated qualitatively that the diffusion coefficient of acetone in CO2 was smaller under high pressure condition. Finally, temperature drop effect of latent heat on the diffusion coefficient and optical path length difference was evaluated, which shows weak contribution to them, and it was suggested that the convection effect, such as Marangoni convection and Stefan flow, was existed on the diffusion near the gas-liquid interface.