Water Desalination System: Experimental Study on the Performance of a Multi-Stage Still

This paper deals with engineering investigation and equipment design of a new multi-stage distillation system. The facility was designed in UDES center with the objective of increasing its productivity and improving its efficiency. Distillation device consists one of important process to produce fresh and clean water from brackish water that is abundant in many remote areas of south Algeria. In general, the production rate of the conventional solar still shows a daily production of 5 l/m2d which depends strongly on the material used and equipment design together with different factors. In comparison, Multi tray still mounted with four stages is more profitable in term of the output than a simple still. The various results, from which the effect of the boiler temperature Tb is presented in the range 75°C