Annular heat exchanger

Abstract

An annular heat exchanger comprising at least two circumferentially enclosed tube profiles ( 1, 2 ) arranged inside each other for media flow and having a thermal conductive structure ( 3 ) arranged inside. The thermal conductive structure ( 3 ) comprises a helically tightly wound pair of bands ( 4, 5 ) lying on each other, the first band ( 4 ) being smooth, the other band ( 5 ) being corrugated transversally to the winding direction to create flow channels ( 6 ).

1 . An annular heat exchanger comprising of at least two circumferentially enclosed tube profiles arranged inside each other for media flow and having a thermal conductive structure arranged inside, wherein the thermal conductive structure comprises a helically tightly wound pair of bands comprising a first band and an other band lying on each other, the first band being smooth, and the other band being corrugated transversally to a winding direction to create flow channels. 
     
     
         2 . The annular heat exchanger according to  claim 1 , wherein the tube profiles have a circular, oval or rectangular cross-section. 
     
     
         3 . The annular heat exchanger according to  claim 1 , wherein the thermal conductive structure completely fills the tube profiles. 
     
     
         4 . The annular heat exchanger according to  claim 2 , wherein the thermal conductive structure completely fills the tube profiles.