The diagram illustrates electricity produce by Ocean Tharmal Energy Conversion (OTEC) as well it also converts salt water into pure drinking water.
Overall, solar energy used for produce fresh drinking water and it has seven stages to make drinking water.
At a fleeting glance, warm seawater is converted into water vapour by solar energy. It converts 5°c water to 29°c water. Afterwards warm water went evacuated evaporation chamber, where salt was separated by the chamber. Next, saltless water vapour turns turbine creating electricity. Turbine generates electricity and after that water went into condensing chamber by long pipe.
Further analysis of the diagram demonstrates that water vapour condensed in chamber creating pure water. Moreover, warm water as well as cold water come into condensing chamber an it separates water in two. One in pure water, which is used for drinking water and second waste salt water, which is not use for any purpose.