Radon mitigation heater pipe
First Claim
1. An apparatus for withdrawal of radon-contaminated air from below the slab of a structure, comprising a vertical convection duct mounted on top of the slab, an inlet duct extending downwardly through the slab from said convection duct into the gas permeable sub-slab layer of the foundation of a structure, an outlet duct extending upwardly from said convection duct passing through the interior of the structure and exiting through the roof, the improvement comprising:
- a heat source disposed internally to said convection duct to heat the radon-contaminated air and create an upward convective flow of said air from the gas permeable sub-slab layer into said inlet duct, through said convection duct, and exhausting said air from said outlet duct above the roof of the structure.
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Accused Products
Abstract
An apparatus and method for radon mitigation using natural convection to remove radon-contaminated air from beneath the slab foundation of a structure, building, or dwelling, comprising a section of vertically mounted convection duct including an internal heat source, an inlet duct extending from said convection duct through the slab into the gas permeable sub-slab layer, an outlet duct extending from said convection duct through the structure and out the roof thereof, the internal heat source comprising a thermally conductive tube disposed concentrically within said convection duct and heated by one or more electrical heater elements to assist the upward airflow of the radon-contaminated air from the structure.
28 Citations
7 Claims
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1. An apparatus for withdrawal of radon-contaminated air from below the slab of a structure, comprising a vertical convection duct mounted on top of the slab, an inlet duct extending downwardly through the slab from said convection duct into the gas permeable sub-slab layer of the foundation of a structure, an outlet duct extending upwardly from said convection duct passing through the interior of the structure and exiting through the roof, the improvement comprising:
a heat source disposed internally to said convection duct to heat the radon-contaminated air and create an upward convective flow of said air from the gas permeable sub-slab layer into said inlet duct, through said convection duct, and exhausting said air from said outlet duct above the roof of the structure. - View Dependent Claims (2, 3, 4)
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5. A method for removing radon-containing residual air from beneath the slab of a structure by providing at least one opening through the slab, an inlet duct extending down through said opening beneath said convection duct into the permeable layer below the slab, an outlet duct extending from the upper outlet end of said heated convection duct, through the structure, and out the roof of the structure, the improvement comprising the steps of:
providing a vertical internally heated convection duct mounted on the slab and disposed above one of said openings through the slab, establishing a convection flow of air from the sub-slab gas permeable layer to above the roof of the structure through said inlet pipe, said internally heated convection duct, and said outlet pipe by means of a heat source mounted internally to said heated convection duct. - View Dependent Claims (6, 7)
Specification