Abstract
We measured vapor-liquid equilibria (VLE) for the system of pentafluoroethane (HFC125)-difluoroethane (HFC152a) over the temperature range from 268.15 K to 373.15 K. Fitting VLE data obtained to an extended BWR equation of state, binary interaction parameters were correlated as a linear function of temperature. Applying the equation of state including the binary interaction parameters to refrigeration cycle, estimation of coefficient of performance (COP) revealed about 13.3 % energy-saving against chlorodifluoromethane (HCFC22), when the mole fraction of HFC125 is 0.44. As the condition of COP estimation, we assumed that temperature changes of out-side fluids were from 285.15 down to 280.15 K and 305.15 up to 310.15 K with 3 K in minimum temperature difference, respectively.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Nishiumi, H., Komatsu, M., Yokoyama, T. and Kohmatsu, S., “Two-and Three-Phase Equilibria and Critical Locus For The System of HCFC22-HFC32”,Fluid Phase Equilibria,83, 109 (1993).
Nishiumi, H., “Vapor-Liquid Equilibrium Calculation of Systems Containing Hydrogen by Extended BWR Equation of State”,J. Chem. Eng. Japan,16, 449 (1984).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nishiumi, H., Akita, H. & Akiyama, S. High pressure vapor-liquid equilibria for the HFC125-HFC152a system. Korean J. Chem. Eng. 14, 359–364 (1997). https://doi.org/10.1007/BF02707052
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02707052