CFD Analysis of Evaporation-Condensation Phenomenon In an Evaporation Chamber of Natural Vacuum Solar Desalination

4th International Conference on Operational Research

Ambarita, H.^1,2 ; Ronowikarto, A.D.^1,2 ; Siregar, R.E.T.^1,2 ; Setyawan, E.Y.^2,3

Mechanical Engineering, Faculty of Engineering, University of Sumatera Utara, Medan, Indonesia^1

Sustainable Energy Research Centre, Faculty of Engineering, University of Sumatera Utara, Medan, Indonesia^2

Mechanical Engineering, National Institute of Technology, Malang, Indonesia^3

关键词: Computational fluid dynamics methods;    Desalination technologies;    Evaporation chambers;    Evaporation-condensation;    Renewable energies;    Saturation temperature;    Solar desalination;    Transport parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/300/1/012058/pdf
DOI  :  10.1088/1757-899X/300/1/012058

来源: IOP

【 摘 要 】

Desalination technologies is one of solutions for water scarcity. With using renewable energy, like solar energy, wind energy, and geothermal energy, expected will reduce the energy demand. This required study on the modeling and transport parameters determination of natural vacuum solar desalination by using computational fluid dynamics (CFD) method to simulate the model. A three-dimensional case, two-phase model was developed for evaporation-condensation phenomenon in natural vacuum solar desalination. The CFD simulation results were compared with the avalaible experimental data. The simulation results shows inthat there is a phenomenon of evaporation-condensation in an evaporation chamber. From the simulation, the fresh water productivity is 2.21 litre, and from the experimental is 2.1 litre. This study shows there's an error of magnitude 0.4%. The CFD results also show that, vacuum pressure will degrade the saturation temperature of sea water.