Desalination unit for the production of potable water from sub-soil brine

A desalination unit for production of potable water from sub-soil brine, the unit comprising:

• an evaporator in the form of a trapezoidal basin for containing the sub-soil brine;
• a heat exchanger comprising a plurality of horizontal metallic pipes disposed inside the basin and parallel to the length of the basin;
• the metallic pipes of the heat exchanger are configured to be coupled to an exhaust port of a heat source via an exhaust heat pipe to receive hot exhaust gases and transfer the heat to the brine contained in the basin thereby resulting in vaporization of the sub-soil brine;
• a feed tank coupled with the trapezoidal basin for maintaining level of sub-soil brine in the trapezoidal basin;
• a flush valve provided at bottom of the trapezoidal basin for draining a concentrated sub-soil brine;
• a condenser comprising a top wall and side walls, being mounted on top of the trapezoidal basin so as form a closed chamber over the basin to trap the vapor produced from the sub-soil brine;
• the side walls of the condenser are constructed so that the condenser have a variable cross section with increasing cross-sectional area from bottom to top;
• a sprinkling system disposed on outer surface of the top wall of the condenser for spraying subsoil brine to make the condenser cool;
• a water collecting channel being disposed horizontally on inner surface of the side walls of the condenser for collecting water.