Friction heating system

Abstract

A heating system has an air intake and an air outlet. A heater is in communication with the air intake and the air outlet. The heater has a first surface and a second surface. The first surface is movable relative to the second surface to generate frictional heat between the first surface and the second surface.

1 . A heating system, comprising:
 an air intake;   an air outlet ;   a heater in communication with said air intake and said air outlet, said heater having a first surface on a first cylinder and a second surface on a second cylinder, wherein said first cylinder is nested within said second cylinder, wherein said first surface is movable relative to said second surface to generate frictional heat between said first surface and said second surface; and   wherein said first cylinder has an air passage in communication with said air intake and said air outlet.   
   
   
       2 . The heating system of  claim 1  wherein said air passage extends along an axis of rotation of one of said first cylinder and said second cylinder. 
   
   
       3 . The heating system of  claim 1  wherein said first surface comprises a solid coating on said first cylinder, said solid coating made of a different material than said first cylinder. 
   
   
       4 . The heating system of  claim 3  wherein said solid coating comprises one of a ceramic, cobalt and carbide. 
   
   
       5 - 9 . (canceled) 
   
   
       10 . The heating system of  claim 1  wherein said first surface is spaced from said second surface, creating a gap between said first surface and said second surface, said gap exposed to air from said air inlet. 
   
   
       11 . The heating system of  claim 1  wherein said first surface is in contact with said second surface. 
   
   
       12 . The heating system of  claim 1  including a blower for moving air between said air intake and said air outlet. 
   
   
       13 . The heating system of  claim 12  wherein said blower is activated at a predetermined temperature. 
   
   
       14 . The heating system of  claim 1  wherein at least one of said air inlet and said air outlet are in communication with a heating and ventilation ductwork of a building. 
   
   
       15 . A heater for a heating and ventilation system, comprising:
 an air inlet;   an air outlet;   a heating element having a first curved surface and a second curved surface;   said first curved surface rotatable relative to said second curved surface;   said first curved surface at least partially concentric with said second curved surface; and   wherein rotation of said first curved surface generates frictional heat between said first surface and said second surface; and   wherein in said first surface is spaced from said second surface, creating a gap between said first surface and said second surface, said gap in communication with said air inlet and said air outlet.   
   
   
       16 . The heater of  claim 15  wherein said first curved surface comprises a cylinder, at least partially surrounded by said second surface. 
   
   
       17 . The heater of  claim 16  wherein said cylinder has an air passage for communication frictional heat out of said cylinder. 
   
   
       18 . The heater of  claim 15  wherein said first curved surface has a coupling linkable to a drive. 
   
   
       19 - 20 . (canceled) 
   
   
       21 . The heating system of  claim 1  wherein said first surface has a thermal conductivity lower than said second surface. 
   
   
       22 . The heater of  claim 16  wherein said second surface only partially surrounds said first surface. 
   
   
       23 . The heater of  claim 22  wherein said second surface comprises only a portion of a cylinder. 
   
   
       24 . A heating system, comprising:
 an air intake;   an air outlet;   a heater in communication with said air intake and said air outlet, said heater having a first surface on a first cylinder and a second surface at least partially surrounding said first cylinder, at least one of said first surface and said second surface having a solid coating made of a different material than said first cylinder.   
   
   
       25 . The heating system of  claim 24  wherein said solid coating has a lower thermal conductivity than said first cylinder. 
   
   
       26 . The heating system of  claim 25  wherein said solid coating comprises one of a ceramic, cobalt and carbide.