Heat transfer tube

Abstract

The present invention relates to a heat transfer pipe comprising a pipe element and a number of ribs arranged around the outer circumference of the pipe element and extending outwards, annular segments being formed encompassing the ribs on the pipe element and fastened to one another with a spring-elastic clamping device, in particular on two annular segments respectively forming a half shell.

1 . Latent heat accumulator or thermo chemical accumulator comprising at least one heat transfer pipe with a pipe element and a number of ribs arranged around the outer circumference of the pipe element and extending outwards and a storage material surrounding said heat transfer pipe, wherein the ribs are formed on annular segments encompassing the pipe element and fastened to one another with a spring-elastic clamping device, in particular on two annular segments respectively forming a half shell, wherein the at least one heat transfer pipe is arranged substantially vertically within the heat accumulator. 
     
     
         2 . Latent heat accumulator or thermo chemical accumulator according to  claim 1 , wherein the clamping device has at least one spring-elastic clamp element. 
     
     
         3 . Latent heat accumulator or thermo chemical accumulator according to  claim 2 , wherein the clamp elements are produced from spring steel. 
     
     
         4 . Latent heat accumulator or thermo chemical accumulator according to  claim 2 , wherein each clamp element is a flexible part comprising a base section and two clamp sections to be extended over one another from opposite sides of the base section end sections preferably splayed apart from one another adjoining the clamp sections and acting as a push-on aid. 
     
     
         5 . Latent heat accumulator or thermo chemical accumulator according to  claim 1 , wherein the annular segments are in the form of extrusion molded profiles, the ribs extending in the longitudinal direction of the pipe element. 
     
     
         6 . Latent heat accumulator or thermo chemical accumulator according to  claim 1 , wherein the geometry of the pipe element and that of the annular segments are matched to one another such that the annular segments rest with substantially their entire surface against the pipe element. 
     
     
         7 . Latent heat accumulator or thermo chemical accumulator according to according to  claim 1 , wherein the ribs have branches. 
     
     
         8 . Latent heat accumulator or thermo chemical accumulator according to  claim 2 , wherein the annular segments have clamping bars which are encompassed by the clamp elements. 
     
     
         9 . Latent heat accumulator or thermo chemical accumulator according to  claim 1 , wherein the annular segments are produced from an aluminium alloy or from unalloyed aluminium, in particular from alloys of aluminium groups 1xxx, 3xxx and 6xxx. 
     
     
         10 . Latent heat accumulator or thermo chemical accumulator according to  claim 1 , wherein the pipe element is a welded or a drawn pipe element. 
     
     
         11 . Latent heat accumulator or thermo chemical accumulator according to  claim 1 , wherein the pipe element is produced from steel or from stainless steel. 
     
     
         12 . (canceled) 
     
     
         13 . Latent heat accumulator or thermo chemical accumulator according to  claim 1 , wherein the storage material surrounding the heat transfer pipe is a phase change material, in particular in the form of salts and salt mixtures, in particular alkali metal nitrates, nitrites, sulphates, carbonates, chlorides, hydroxides, bromides, thiocyanates and fluorides or combinations of the latter, in particular anhydrous salts with a melting temperature above 120° C. or salt hydrates with a maximum phase transformation temperature of up to 200° C. 
     
     
         14 . (canceled) 
     
     
         15 . Latent heat accumulator or thermo chemical accumulator according to  claim 3 , wherein each clamp element is a flexible part comprising a base section and two clamp sections to be extended over one another from opposite sides of the base section, end sections preferably splayed apart from one another adjoining the clamp sections and acting as a push-on aid. 
     
     
         16 . Latent heat accumulator or thermo chemical accumulator according to  claim 4 , wherein the annular segments are in the form of extrusion molded profiles, the ribs extending in the longitudinal direction of the pipe element. 
     
     
         17 . Latent heat accumulator or thermo chemical accumulator according to  claim 5 , wherein the geometry of the pipe element and that of the annular segments are matched to one another such that the annular segments rest with substantially their entire surface against the pipe element. 
     
     
         18 . Latent heat accumulator or thermo chemical accumulator according to according to  claim 5 , wherein the ribs have branches. 
     
     
         19 . Latent heat accumulator or thermo chemical accumulator according to  claim 5 , wherein the annular segments have clamping bars which are encompassed by the clamp elements. 
     
     
         20 . Latent heat accumulator or thermo chemical accumulator according to  claim 6 , wherein the annular segments have clamping bars which are encompassed by the clamp elements. 
     
     
         21 . Latent heat accumulator or thermo chemical accumulator according to  claim 9 , wherein the pipe element is a welded or a drawn pipe element. 
     
     
         22 . Latent heat accumulator or thermo chemical accumulator according to  claim 2 , wherein the storage material surrounding the heat transfer pipe comprises anhydrous salts with a melting temperature above 120° C. or salt hydrates with a maximum phase transformation temperature of up to 200° C.