ISESCO JOURNAL of Science and Technology
The Official Journal of ISESCO Centre for Promotion of Scientific Research

Abstract

Solar distillation is one of the simplest and most significant processes of separation. A solar distiller of new design was built by the coupling of two combined devices: a conventional solar distiller with only one slope facing south, and what is known as a distiller with capillary film (or DIFICAP). It consists of a parallelepipedic compartment formed by two opposite plates drawn aside from a distance of 0.038m. This guarantees the advantage of re-using the condensation latent heat to evaporate another quantity of water. We have developed a digital code that makes it possible to obtain the temperature values and condensation rate of this device. The present work provides a comparative study between the theoretical results and those measured in experiments. Numerically, we found a very important rate of condensation, reaching 8.94 Kg/m2/d and coming close to that obtained in the experiments, on a sunny day (corresponding to 06/8/2007); and with a solar radiation of 20.7 MJ/m2/d.

Keywords: Capillary Film Distiller, Modeling, Solar energy, Solar distillation, Simulation.