Passive way to improve heat distribution in packed bed storage

Abstract

A system for storing heat is provided having a first housing section with a first storage volume, wherein the first housing has a first opening for connecting the first storage volume to an environment. A first type of first heat storing elements is arranged within the first housing section. The system has a second housing section with a second storage volume, wherein the second housing section has a second opening for connecting the second storage volume to the environment, wherein the first and second storage volumes are interconnected for forming a common storage volume. A second type of second heat storing elements is arranged within the second housing section. The first heat storing elements of the first type have a respective first element size, wherein the second storing elements of the second type have a respective second element size. The first element size differs from the second element size.

1 . A system for storing heat, the system comprising
 a housing with a storage volume, wherein the housing comprises an opening for connecting the storage volume to an environment,   a first type of first heat storing elements which is arranged within a first location within the storage volume,   a second type of second heat storing elements which is arranged within a second location within the storage volume,   wherein the first heat storing elements of the first type comprise a respective first element size,   wherein the second storing elements of the second type comprise a respective second element size, and   wherein the first storing element size differs from the second element size.   
     
     
         2 . The system according to  claim 1 ,
 wherein the housing section further comprises a further opening for connecting the storage volume to the environment,   wherein the further opening is spaced apart from the opening,   wherein the first type of first heat storing elements is arranged within the opening forming the first location, and   wherein the second type of second heat storing elements is arranged within the further opening forming the second location.   
     
     
         3 . The system according to  claim 2 ,
 wherein the housing section further comprises a center section arranged between the opening and the further opening,   wherein an additional further type of additional further heat storing elements is located within the centre section,   wherein the additional further heat storing elements of the additional further type comprise a respective additional further element size, and   wherein the additional further storing element size differs from the first element size and/or the second element size.   
     
     
         4 . The system according to  claim 1 ,
 wherein the housing comprises a first housing section and the storage volume comprises a first storage volume,   wherein the first housing section comprises a first opening forming the opening for connecting the first storage volume to the environment,   wherein the first type of first heat storing elements is arranged within the first housing section forming the first location,   wherein the housing further comprises a second housing section and the storage volume comprises a second storage volume,   wherein the second housing section comprises a second opening for connecting the second storage volume to the environment,   wherein the first storage volume and the second storage volume are interconnected for forming a common storage volume, and   wherein the second type of second heat storing elements is arranged within the second housing section forming the second location.   
     
     
         5 . The system according to  claim 4 ,
 wherein the first housing section comprises a first centre section and a first opening section which comprises the first opening,   wherein the first type of first heat storing elements is arranged within the first opening section.   
     
     
         6 . The system according to  claim 5 ,
 wherein the first opening section comprises a tapering profile in such a manner that a flow diameter at the first opening is smaller than at a transition section between the first opening section and the first centre section for forming a diffusor section or a nozzle section, respectively.   
     
     
         7 . The system according to  claim 5 ,
 wherein the first type of first heat storing elements is additionally arranged within the first centre section.   
     
     
         8 . The system according to  claim 5 , further comprising
 a further first type of further first heat storing elements,   wherein the further first heat storing elements differ in size and/or material from the first heat storing elements, and   wherein the further first type of first heat storing elements is additionally arranged within the first centre section.   
     
     
         9 . The system according to  claim 1 ,
 wherein the first housing section further comprises a further first opening for connecting the first storage volume to the environment,   wherein the further first opening is spaced apart from the first opening.   
     
     
         10 . The system according to  claim 1 ,
 wherein the first housing section comprises a further first opening section which comprises the further first opening, and   wherein the first type of the first heat storing elements is arranged within the further first opening section.   
     
     
         11 . The system according to one of the  claims 1  to  claim 1 ,
 wherein the second housing section comprises a second center section and a second opening section which comprises the second opening, and 
 wherein the second type of second heat storing elements is arranged within the second opening section. 
 
     
     
         12 . The system according to  claim 11 ,
 wherein the second opening section comprises a tapering profile in such a manner that a flow diameter at the second opening is smaller than at a transition section between the second opening section and the second centre section for forming a diffusor section or a nozzle section, respectively.   
     
     
         13 . The system according to  claim 11 ,
 wherein the second type of second heat storing elements is additionally arranged within the second centre section.   
     
     
         14 . The system according to  claim 11 , further comprising
 a further second type of further second heat storing elements,   wherein the further second heat storing elements differ in size and/or material from the second heat storing elements, and   wherein the further second type of second heat storing elements is additionally arranged within the second centre section.   
     
     
         15 . The system according to  claim 1 ,
 wherein the second housing section further comprises a further second opening for connecting the second storage volume to the environment,   wherein the further second opening is spaced apart from the second opening, and   wherein a further second type of further second heat storing elements is arranged within the further second opening.   
     
     
         16 . A method for manufacturing a system for storing heat, the method comprising
 providing a first housing section with a first storage volume,
 wherein the first housing comprises a first opening for connecting the first storage volume to an environment, 
   providing a first type of first heat storing elements,   arranging the first type of first heat storing elements within the first housing section,   providing a second housing section with a second storage volume,
 wherein the second housing section comprises a second opening for connecting the second storage volume to the environment, 
 wherein the first storage volume and the second storage volume are interconnected for forming a common storage volume, 
   providing a second type of second heat storing elements, and   arranging the second type of second heat storing elements within the second housing section,
 wherein the first heat storing elements of the first type comprise a respective first heat storing element size, 
 wherein the second heat storing elements of the second type comprise a respective second element size, and 
 wherein the first element size differs from the second element size.