Abstract: A desalinization device including a portable, spherical tank with conduits to introduce water to be converted into steam in the lower zone of the tank and guide structure to guide the steam into a condensate bowl within the tank where it is collected; the device also includes a conduit means to conduct cooling water to a cooling coil arranged in the condensate bowl to condense the steam; and within the conduits there is provided a Venturi arrangement in communication with the interior of the tank to reduce the pressure within the tank, hence lowering the boiling point of the water being heated; in a preferred embodiment Peltier devices are included as heat exchanging means in a heating and cooling circuit.