@inproceedings{9ff000846e1d403fb48974edab1c5a09,
title = "Computational fluid dynamics simulations of a two-phase R-744 ejector geometry in expansion processes of vapor-compression refrigeration systems",
abstract = "Carbon dioxide (CO2), also known as R744, is a natural working fluid in vapor-compression refrigeration systems (VCRS) that brings advantages from the aspects of sustainability and high efficiency, especially when VCRS are operated with ejectors. This study reports on computational fluid dynamics (CFD) simulations for a two-phase R744 ejector in transcritical operating conditions (OC) by applying a multiphase mixture model in a commercial CFD solver. Two different OCs were considered with the inlet pressures of 63.83 bar and 66.51 bar at the motive inlet and 26.36 bar and 29.44 bar at the suction inlet, respectively. Results showed that the deviation of mass entrainment ratio between the simulated results and the experimental data was 4.2 \% and 13.9 \% for two different cases. Based on the simulation results, the fields of pressure, temperature, mass fraction, and Mach number were analysed. The maximum Mach number was found no greater than 1.45.",
author = "Kanbur, \{B. B.\} and Markussen, \{W. B.\} and A. Busch and Kriezi, \{E. E.\} and K{\ae}rn, \{M. R.\} and J. Kristofferson and Walther, \{J. H.\}",
year = "2023",
doi = "10.18462/iir.icr.2023.0480",
language = "English",
series = "Science et Technique du Froid",
publisher = "International Institute of Refrigeration",
booktitle = "Proceedings of the 26th IIR International Congress of Refrigeration",
note = "26th International Congress of Refrigeration ; Conference date: 21-08-2023 Through 25-08-2023",
}