Method For Producing A Latent Heat Storage Device

Abstract

A method for producing a latent heat accumulator may include filling a can body with a phase-change material in the liquid or solid aggregate state, and closing the can body filled with said solid or liquid phase-change material by flanging such that fluid cannot pass through.

What is claimed is: 
     
         1 . A method for producing a latent heat storage device, the method comprising:
 at least partially filling a can body with phase-change material in a liquid or solid state, and   performing a seam rolling to close the can body filled with the solid or liquid phase-change material in a fluid-tight manner.   
     
     
         2 . The method of  claim 1 , comprising:
 heating the solid phase-change material and the can body prior to filling the can body, wherein the solid phase-change material is liquefied by the heating, and   wherein at least partially filling the can body with the phase-change material comprises at least partially filling the heated can body with the liquefied phase-change material.   
     
     
         3 . The method as claimed in  claim 2 , comprising performing the seam rolling after the liquefied phase-change material solidifies in the can body. 
     
     
         4 . The method as claimed in  claim 1 , wherein the can body is filled with a powdery phase-change material. 
     
     
         5 . The method as claimed in  claim 1 , wherein the can body is filled with at least one of a pelletized phase-change material or a molded phase-change material. 
     
     
         6 . The method as claimed in  claim 5 , wherein the can body is filled with at least one of a pelletized phase-change material or a molded phase-change material having a form fit with the can body. 
     
     
         7 . The method as claimed in  claim 4 , comprising heating at least one of the phase-change material filled in the can body or the filled can body prior to the seam rolling, wherein said heating liquefies the introduced phase-change material filled in the can body. 
     
     
         8 . The method as claimed in  claim 7 , comprising cooling at least one of the liquefied phase-change material filled in the can body or the filled can body prior to the seam rolling, wherein the liquefied phase-change material in the can body is re-solidified by said cooling. 
     
     
         9 . The method as claimed in  claim 1 , wherein the phase-change material comprises at least one salt or inorganic salt. 
     
     
         10 . The method as claimed in  claim 1 , comprising joining at least one of a can bottom or a can lid to the can body by seam rolling. 
     
     
         11 . The method as claimed in  claim 10 , wherein the can body is a cylindrical can body having an aspect ratio of greater than one. 
     
     
         12 . A latent heat storage device, comprising:
 a can body having a phase-change material arranged in the can body,   wherein the can body is closed in a fluid-tight manner by seam rolling.   
     
     
         13 . The latent heat storage device of  claim 12 , wherein the can body is cylindrical can body, and wherein at least one of a can bottom or a can lid is secured to the cylindrical can body by seam rolling. 
     
     
         14 . The latent heat storage device of  claim 13 , wherein the cylindrical can body has rolled grooves. 
     
     
         15 . The latent heat storage device of  claim 12 , wherein the can body has a chemically inert coating on an inner side facing the phase-change material.