Patent ID: 7841390

Claim:
A heat exchanger comprising: a heat exchanging body rotatable relative to a housing; and a plurality of heat exchange elements disposed in the heat exchanging body so as to define a plurality of channels that allow air to flow therethrough, wherein each heat exchange element includes a resilient and mechanically durable powder coating with an operational temperature limit of approximately 975° F. and consisting of dry powder particles configured to cure at a temperature above ambient to provide a protective layer configured to inhibit corrosion inducing agents formed in a selective catalytic reduction process during operation of a fossil fuel burning power plant from contacting an underlying surface of the heat exchange element to thereby resist corrosion of the heat exchange element, wherein the thickness of the powder coating on the heat exchange elements is between 1.5-2.5 mils, said thickness configured to inhibit said corrosion inducing agents from contacting said underlying surface of the heat exchange elements to thereby resist corrosion of the heat exchange elements, while not inhibiting heat transfer between the heat exchange elements and said airflow.