Desalination Systems

A brief technical description of the "Desalination Park"

The unit is a floating counter-current cooling tower, in which fresh water cooled at a depth captures and cools the atmospheric air, from which it condenses water. Solar radiation falling on the surface of the sea, evaporates moisture from it. Moist air is sucked by the fan into the cooling tower nozzle, cooled by fresh water jets flowing from the spray nozzles at the top of the nozzle. Due to contact with cold water, moist air is cooled, the moisture contained in it is condensed and mixed with the source water, that is, the unit does not have an upper water-air heat exchanger (more precisely, it is, but it is contact), which greatly simplifies and reduces the cost of construction makes it more compact and resistant to damage and contamination.

 

Under the conditions of the combination of heating/cooling media and condensation of moisture in one of them, traditional heat exchangers work very poorly, the condensate film constantly flowing down the heat exchanger has a low thermal conductivity, which makes heat exchange difficult. The contact heat exchanger used in this design, in which the media contact each other directly rather than exchanging heat through the wall, is in this respect a very successful solution.

Solar-powered water evaporator for brines and producing solid salts and minerals

Parabolic Cylinder

The installation consists of solar PCCs that heat the working solution (Heat Transfer Oil, salt melt in the case of a closed primary circuit) or brine at a working pressure of 0.2-0.25 MPa and a flow of up to 1m3/h (any volume is possible), and with a heating temperature of 120-125℃. 

Next, the brine enters the evaporator of a special design, where crystallized precipitation is separated. The operation of the evaporator can be provided by a solar power plant with a capacity of 150 kW.