Modeling and Simulation studies on a multi-stage solar water desalination system

The purpose of this study is to simulate and analyse the functioning of a solar desalination system coupled with four flat plate solar collectors with each having a surface of 3m
²
. To achieve this work, we have modeled the equations of heat balances by numerical simulation by using Matlab, The results obtained, from the resolution of equations governing the thermal transfer in the distiller, show that the total production of drinking water is 90 l / day, that the first stage of the system produces about 29 l of distilled water, the production decreases with the stages, it varies from 29 kg to 13 kg (variation of 16 kg), it was also found that stages 1 to 4 produce about 36%, 28%, 21% and 15% of the overall production, respectively. And the overall hourly efficiency of the order 0.52 kg / m
²
.h. The overall energy performance obtained shows, on the one hand, the good operation of the solar distiller and, on the other hand, the production of drinking water that meets the needs of the beneficiaries of the Douar Al Hamri, where the system of solar desalination will be installed.