Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/31102
Title: CFD Air Flow Evaluation of Finned Tube Evaporator for Refrigerated Display Cabinet Application
Authors: Santosa, IDMC
Waisnawa, IGNS
Sunu, PW
Temaja, IW
Li, L
Keywords: air side heat transfer coefficient;air flow characteristic;finned tube evaporator;numerical modelling
Issue Date: 30-Apr-2024
Publisher: Semarak Ilmu Publishing
Citation: Santosa, IDMC et al. (2024) 'CFD Air Flow Evaluation of Finned Tube Evaporator for Refrigerated Display Cabinet Application', CFD Letters, 16 (9), pp. 52 - 63. doi: 10.37934/cfdl.16.9.5263.
Abstract: This study is aimed to develop a simulation to improve the performance of the finned tube evaporator which is applied to the refrigerated display cabinet. CFD model was developed to be able to analyse the characteristics of air flow inside the fin gap and air side heat transfer coefficient. Geometry of the model of overall finned tube evaporator is considered covering two aluminium wavy fins with an air flow in between, combination of staggered cooper tubes with refrigerant flow inside. Fin gap is designed 4 mm to anticipate frost on the fin surface that can block air flow. Turbulence models used in the study is the realizable k-ε turbulence which had the best performance turbulence model and it was validated with secondary data from previous studies and shows the lowest error only 5.9 %. The use of CFD was found to be sufficiently representative of the heat transfer characteristics of evaporators, and acted as an effective simulation tool to determine the heat transfer coefficient in order to improve efficiency in terms of improved design. The characteristics of air flow between the fin gap and around the tube was obtained various and complex. In the case study the entry velocity of 1.7 m /s at the highest turbulence condition of the first row can reach speeds of 2.75 m/s. Hight turbulence regime in flow can indicate higher the heat transfer coefficient of the evaporator.
URI: https://bura.brunel.ac.uk/handle/2438/31102
DOI: https://doi.org/10.37934/cfdl.16.9.5263
Other Identifiers: ORCiD: Liang Li https://orcid.org/0000-0002-0451-7045
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers

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