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Title: CFD modelling of a two-phase closed thermosyphon charged with R134a and R404a
Authors: Fadhl, B
Wrobel, LC
Jouhara, H
Keywords: Two-phase thermosyphon;Computational fluid dynamics (CFD);Phase change material;Pool boiling;Liquid film condensation;R134a;R404a
Issue Date: 2015
Publisher: Elsevier
Citation: Applied Thermal Engineering, 78 pp. 482 - 490, 2015
Abstract: This paper examines the application of CFD modelling to simulate the two-phase heat transfer mechanisms in a wickless heat pipe, also called a thermosyphon. Two refrigerants, R134a and R404a, were selected as the working fluids of the investigated thermosyphon. A CFD model was built to simulate the details of the two-phase flow and heat transfer phenomena during the start-up and steady-state operation of the thermosyphon. The CFD simulation results were compared with experimental measurements, with good agreement obtained between predicted temperature profiles and experimental temperature data, thus confirming that the CFD model was successful in reproducing the heat and mass transfer processes in the R134a and R404a charged thermosyphon, including the pool boiling in the evaporator section and the liquid film in the condenser section.
ISSN: 1873-5606
Appears in Collections:Brunel Design School Research Papers

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