<abstract xmlns="http://www.w3.org/1999/xhtml"><p>An important parameter in the hydraulic design of refrigeration and air-conditioning systems is the two-phase flow pressure drop. In this paper, the authors compare the numerical results obtained by using seven two-phase pressure-drop models with the experimental results found in the scientific literature, for the condensation of R600a and R717 (Ammonia = NH3) in horizontal tubes. Different mass flow rates and different conditions have been considered in order to see which correlation is applicable under specific operation conditions.</p></abstract>

An important parameter in the hydraulic design of refrigeration and air-conditioning systems is the two-phase flow pressure drop. In this paper, the authors compare the numerical results obtained by using seven two-phase pressure-drop models with the experimental results found in the scientific literature, for the condensation of R600a and R717 (Ammonia = NH3) in horizontal tubes. Different mass flow rates and different conditions have been considered in order to see which correlation is applicable under specific operation conditions.

Comparison of Two-Phase Pressure Drop Models for Condensing Flows in Horizontal Tubes

Lecturer, Dr. Eng., Technical University of Civil Engineering Bucharest, Thermal Engineering Department

Associate Professor, Dr. Eng., Technical University of Civil Engineering Bucharest, Thermal Engineering Department

Professor, Dr. Eng., Technical University of Civil Engineering Bucharest, Department of Hydraulics and Environmental Protection

Modelling in Civil Environmental Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

An important parameter in the hydraulic design of refrigeration and air-conditioning systems is the two-phase flow pressure drop. In this paper, the authors...

Comparison of Two-Phase Pressure Drop Models for Condensing Flows in Horizontal Tubes

Pubblicato online: 03 mar 2015

Pagine: 19 - 27

DOI: https://doi.org/10.2478/mmce-2014-0019

Parole chiave
two-phase pressure drop, refrigerant, condensation

© by Alina Filip

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Comparison of Two-Phase Pressure Drop Models for Condensing Flows in Horizontal Tubes

Pubblicato online: 03 mar 2015

Pagine: 19 - 27

DOI: https://doi.org/10.2478/mmce-2014-0019

Parole chiavetwo-phase pressure drop, refrigerant, condensation

© by Alina Filip

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
two-phase pressure drop, refrigerant, condensation