Apparatus for producing potable water and slush from sea water or brine

A water de-salination and ice slush producing system comprising:

• a sea water intake;
• a reverse osmosis means, where a separation of potable water and waste brine occurs, arranged to receive sea water from the sea water intake;
• and
• a chiller tube arranged to receive sea water mixed with waste brine, for producing ice slush, the chiller tube having:
• an outer housing,
• a first cylindrical wall within the outer housing and spaced therefrom, which together with the outer housing defines a first cooling space with a first cooling conduit arranged to circulate a coolant in the first cooling space to cool down the first cylindrical wall,
• a second cylindrical wall arranged within the first cylindrical wall and defining an ice generating space together with the first cylindrical wall, an inside of the second cylindrical wall defining a second cooling space having a second cooling conduit, wherein coolant enters the second cooling space via a coolant inlet, is cooled by the second cooling conduit having a refrigerant circulated inside from a refrigerant inlet to a refrigerant outlet, so that the coolant in the second cooling space cools the second cylindrical wall, and the coolant is then circulated through the first cooling conduit to cool the first cylindrical wall,
• an ice outlet in fluid communication with the ice generating space;
• a scraper assembly rotatably arranged inside the ice generating space, the scraper being rotated by a power source to remove fresh ice crystals from both an inner surface of the first cylindrical wall and an outer surface of the second cylindrical wall and transfer the ice crystals to the outlet.