<p>A method for RF dielectric heating an object (22) having a variable weight including a medium is provided. The method comprises: (A) placing the object having the variable weight including the medium (26) into an enclosure; (B) adding an ionic substance to the medium; (C) initiating a heating process by subjecting the medium including the object to a variable AC electrical field (24); and (D) controlling the heating process. The method further comprises using an air flow (30) having an ambient temperature (32), or being heated before getting into the enclosure, to carry away the evaporated medium from the enclosure.</p>
