TY - JOUR
AU - Barbosa, Jader R.
AB - This paper presents the development of an experimental apparatus designed for measuring the interfacial tension of a POE ISO 10/R-134a mixture under varying solubility conditions using the maximum bubble pressure method (MBPM). The apparatus features two capillary tubes immersed in a liquid volume against which a vapor bubble expands to determine interfacial tension. Key parameters of the MBPM, including bubble formation frequency and chamber volume, were meticulously fine-tuned for accurate calibration. Calibration was performed using a water/N2\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\hbox {N}_2$$\end{document} mixture within the same apparatus, and the results were validated against established literature data. The experimental setup exhibited high sensitivity to bubble formation frequency, requiring precise maintenance at a constant rate of 1.0 Hz. Notably, the two-capillary model demonstrated superior performance compared to classical constant-adjusted models. A satisfactory fit for the R-134a/POE ISO 10 system was achieved with a mixing-law coefficient of r=1/7\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$r=1/7$$\end{document}, highlighting significant deviation from ideal mixture behavior (r=1\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$r=1$$\end{document}).
TI - Experimental determination of gas–liquid interfacial tension for POE ISO 10/R-134a mixtures using the maximum bubble pressure method
JF - Journal of the Brazilian Society of Mechanical Sciences and Engineering
DO - 10.1007/s40430-024-05213-1
DA - 2024-11-01
UR - https://www.deepdyve.com/lp/springer-journals/experimental-determination-of-gas-liquid-interfacial-tension-for-poe-2XiPDuyWma
VL - 46
IS - 11
DP - DeepDyve
ER -