Heating system for structures
OwnerBertil S. M. Granborginventor
Life of this patent
Estimating the term…
Abstract
Low voltage, high current electrical energy is supplied in a closed conductive loop. Preferably, the current is induced into the loop by a transformer. The loop has, at least in part, one, or a series of, conductive elements of a structure to be warmed. The amount of current is sufficient in relation to the inherent resistivity of the elements to cause the generation of heat within the elements. Preferably the current is an alternating current of a frequency which causes a majority of the current to travel at or near the skin of the elements in order to increase the effective resistivity of the elements and thereby increase the generation of heat therein, primarily around the skin of the elements.
Claims20
A system for generating heat within a structure comprising:
- (a) at least one element of the structure that is electrically conductive, said at least one element being a functional member of said structure,
- (b) means for connecting said at least one element as a serial member in an electric circuit loop, and
- (c) means for causing an alternating electric current in said electric circuit loop of sufficient frequency to cause at least a majority of current in said at least one element to be constricted at or near the surface of said at least one element, the current being of sufficient magnitude in relation to an inherent resistivity of said at least one element due to skin effect to generate a desired amount of heat at or near said surface of said at least one element.
A system for generating heat within a structure comprising:
- (a) at least one element of the structure that is electrically conductive, the primary function of said at least one element being other than to generate heat,
- (b) means for connecting said at least one element as a serial member in an electric circuit loop, and
- (c) means for causing a single phase alternating electric current in said electric circuit loop of sufficient frequency to cause at least a majority of current in said at least one element to be constricted at or near the surface of said at least one element, the current being of sufficient magnitude in relation to an inherent resistivity of said at least one element to generate a desired amount of heat due to skin effect at or near said surface of said at least one element.
Dependencies are inferred from the claim text.