Structural Metal Element With Improved Thermal Properties

Abstract

Structural metal element for door-, window or the similar applications with improved thermal properties, having at least one interior surface, one exterior surface and one internal surface, where at least one surface of the element have improved optical properties by means of a surface treatment or coating. The surface in accordance with the invention has improved thermal emissivity and/or solar reflectance. Further, the invention also relates to a method of making the structural element, treated in a preferred manner or with preferred coatings.

1 - 25 . (canceled)  
   
   
       26 . Structural metal element for door-, window or the similar applications with improved thermal properties, having at least one interior surface, one exterior surface and one or more internal surfaces, where at least one surface of the element have improved optical properties such as emissivity and/or solar reflectance by means of a coating applied thereto wherein the exterior and/or the interior of the structural element is coated by a low emissive powder coating with good durability such as chemical and mechanical resistance in alkaline, acid and outdoor environments.  
   
   
       27 . Structural element in accordance with  claim 26 , wherein the powder coating consists of particles based upon a polymeric matrix having metal flakes adhered thereto.  
   
   
       28 . Structural element in accordance with  claim 26 , wherein the coating is applied to the element in a powder coating process.  
   
   
       29 . Structural element in accordance with  claim 26 , wherein the coating is applied to the element in a co-extruding process.  
   
   
       30 . Structural element in accordance with  claim 26 , wherein the emissivity at interior surface of the structural element is ε<0.85.  
   
   
       31 . Structural element in accordance with  claim 26 , wherein the black or dark coloured exterior surface of the structural element have solar reflectance properties where TSR>20.  
   
   
       32 . Structural element in accordance with  claim 26 , wherein at least one internal surface of the structural element is coated with a low emissive, wet metallic paint.  
   
   
       33 . Structural element in accordance with  claim 26 , wherein the structural element is made out of aluminium or an aluminium alloy.  
   
   
       34 . Structural metal element for door-, window or the similar applications with improved thermal properties, having at least one interior surface, one exterior surface and one or more internal surfaces, where at least one surface of the element have improved optical properties such as emissivity and/or solar reflectance by means of a surface treatment, wherein the surface treatment of the exterior and/or the interior of the structural element consists of a sol-gel coating with good durability such as chemical and mechanical resistance in alkaline, acid and outdoor environments.  
   
   
       35 . Structural element in accordance with  claim 34 , wherein the interior surface of the structural element have emissivity properties, the emissivity is ε<0.85.  
   
   
       36 . Structural element in accordance with  claim 34 , wherein the black or dark coloured exterior surface of the structural element have high solar reflectance properties TSR>20.  
   
   
       37 . Structural element in accordance with  claim 34 , wherein it is made out of aluminium or an aluminium alloy.  
   
   
       38 . Structural metal element for door-, window or the similar applications with improved thermal properties, having at least one interior surface, one exterior surface and one or more internal surfaces, where at least one surface of the element have improved optical properties such as emissivity and/or solar reflectance by means of a surface treatment, wherein the surface is treated by a barrier aluminium oxide anodising processing with good durability such as chemical and mechanical resistance in alkaline, acid and outdoor environments.