Effects of tray shape of a multi-stage solar still coupled to a parabolic concentrating solar collector in Algeria

In our article we realized a solar distiller with four floors. The distiller tested is poly-energy, it can operate by three different energy sources: electrical resistance (power grid or photovoltaic panel), photo thermal solar collector or vegetable and animal waste. A cylindro-parabolic solar collector used to collect the heat necessary for the distillation is coupled to the four-stage still. The tested trays of the still have two different forms: “V” and “Λ”. The water desalination is done by many technologies such as the multi-stage still which is tested experimentally in this work under the weather conditions of the city of Batna, Algeria (35° 45′ North, 6° 19′ East). “V” shaped trays are the most efficient at producing distilled water because it is cheaper and more cost effective than the “Λ” floor that requires two collectors. The electricity consumption of the distiller depends on the amount of heat lost by the distiller, and the cost of electricity consumed by the distiller depends on the type of trays. The water produced by the trays of the form Λcosts more than the trays of form V.