The Thermodesalination Device has the capability of employing reverse osmosis via a specialized desalination system. This specialized desalination system is integrated into the upper portion of a steam turbine generator that separates seawater into fresh water and concentrated brine, for preferred allocation. The disclosed desalination device includes a reverse osmosis (RO) membrane comprising a solute side and a solvent side and vanes configured to strengthen a sheer of the RO membrane. The disclosure also includes a steam turbine configured to superheat a saltwater input and create a pressurized and superheated saltwater output on the solute side of the RO membrane. The disclosure yet includes a freezer configured to freeze a brine output from the solute side of the RO membrane into the shape of salt crystals.