20130240178 | AUTOMATED THERMAL EXCHANGE SYSTEM - A system for condensing steam is provided that includes a cooling tank and a condensing coil extending into the cooling tank. Coolant from a source of coolant flows into the tank to cool the condensing coil when the temperature of the coolant in the cooling tank exceeds a predetermined value. A drain is in fluid communication with the cooling tank. An air gap assembly is located between the tank and the source of coolant. The air gap assembly includes an opening to atmospheric air and is constructed and arranged to allow coolant to flow out of the opening air vent when there is a predetermined amount of coolant back flowing into the device. | 09-19-2013 |