Modelagem matemática e simulação numérica de um dessalinizador solar tipo cascata

Abstract

The objective of this work is the mathematical modeling and numerical simulation of a cascade solar desalinator. In order to verify the best type of solar desalinator, based on the adopted simulation parameters to obtain a better production and efficiency of the object under study, using heat transfer processes, the specifications and properties of the materials for the prototype were considered. The parametric analysis through the results of the Autodesk CFD software allowed the conclusion of some indispensable characteristics for a good and efficient operation of the solar desalinator. An accumulated production for Prototypes 1, 2 and 3 of 1,873 mL.m-2 day-1, 1,843 mL.m-2 day-1 and 1,748 mL.m-2 day-1 was obtained at the end for desalted water. The best prototype exposed with the distances of 4, 5, 6 cm is Prototype 1 and 2 with 4 cm, 5 cm of water layer for the glass plate, precisely because it has a greater transfer of heat from the glass plate to the fluid. Scenarios were created to verify the convergence of the desalinator, it was noted that there was convergence in its graphs, as the values were close to the expected, it could be concluded that there was indeed convergence and that the values obtained corroborate for this research.