System and method for heat storage and release with flange

Abstract

The invention relates to a system and a method for heat storage and recovery comprising a fixed bed ( 2 ) of storage particles. Fixed particle bed ( 2 ) comprises an obstacle ( 4 ), a flange for example, arranged on the periphery of fixed bed ( 2 ) of storage particles, and substantially perpendicular to the circulating flow ( 3 ) of said fluid. The invention also relates to a system and a method for energy storage and recovery using the system and the method for heat storage and recovery.

1 . A heat storage and release system comprising at least one storage enclosure, at least one fixed bed of heat storage and release particles being arranged in the storage enclosure, and at least one fluid can flow through the fixed bed in the storage enclosure, the storage enclosure comprising at least one inlet of the fluid into the storage enclosure and at least one outlet of the fluid from the storage enclosure, wherein at least one obstacle is positioned in the fixed bed, substantially perpendicular to the circulating flow of the fluid, the obstacle being positioned on the periphery of the fixed bed of the heat storage and release particles, the obstacle being distributed around the periphery of the fixed bed of the storage particles. 
     
     
         2 . A system as claimed in  claim 1 , wherein the system comprises at least two obstacles evenly spaced along the circulating flow of the fluid. 
     
     
         3 . A system as claimed in  claim 2 , wherein the spacing (E) between two of the successive obstacles along the circulating flow of the fluid is at minimum twice the dimension of the obstacle, perpendicular to the circulating flow of the fluid. 
     
     
         4 . A system as claimed in  claim 1 , wherein storage enclosure comprises at least one distributor for distributing the fluid into the fixed bed, and preferably at least two distributors. 
     
     
         5 . A system as claimed in  claim 4 , wherein the obstacle is positioned at the distributor. 
     
     
         6 . A system as claimed in  claim 1 , wherein the obstacle consists of a plate. 
     
     
         7 . A system as claimed in  claim 1 , wherein dimension (L) of the obstacle, perpendicular to the circulating flow of the fluid, ranges between 1 and 10 times the equivalent Sauter diameter of the heat storage and release particles of the fixed bed, preferably between 3 and 5 times the equivalent Sauter diameter of the heat storage and release particles of the fixed bed. 
     
     
         8 . A system as claimed in  claim 1 , wherein the storage enclosure is cylindrical or substantially cylindrical. 
     
     
         9 . A system as claimed in  claim 8 , wherein the circulating flow of the fluid within the storage enclosure occurs along the axis of the storage enclosure. 
     
     
         10 . A system as claimed in  claim 9 , wherein the obstacle consists of an annular plate arranged on the inner face of the cylindrical wall of the storage enclosure. 
     
     
         11 . A system as claimed in  claim 8 , wherein the circulating flow of the fluid within the storage enclosure occurs along an axis perpendicular to the axis of the storage enclosure, at least two trays supporting the fixed bed being positioned within the storage enclosure, the support trays being perpendicular to the axis of the storage enclosure. 
     
     
         12 . A system as claimed in  claim 11 , wherein the obstacle is positioned on the support trays, the obstacle thus forming a portion of a cylinder on each of the two trays supporting the fixed bed of the heat storage and release particles. 
     
     
         13 . A system as claimed in  claim 1 , wherein the obstacle is continuously distributed around the periphery of the fixed bed. 
     
     
         14 . A system as claimed in  claim 1 , wherein the obstacle is discontinuously distributed around the periphery of the fixed bed. 
     
     
         15 . A compressed-gas energy storage and recovery system, comprising at least one gas compression means, at least one compressed gas storage means, at least one means of expanding the compressed gas to generate energy and at least one heat storage means as claimed in  claim 1 . 
     
     
         16 . A heat storage and recovery method, wherein the following steps are carried out:
 a) storing the heat in a fixed bed of heat storage and release particles, by circulating a fluid in the fixed bed, and   b) releasing the heat recovered by the fixed bed, by circulating a fluid in the fixed bed,   wherein, to store and release the heat, the fluid is subjected to at least one obstacle positioned in fixed bed, perpendicular or substantially perpendicular to flow of the fluid, the obstacle being positioned on the periphery of the fixed bed of the heat storage and release particles, the obstacle being distributed around the periphery of the fixed bed of the heat storage and release particles.   
     
     
         17 . A method as claimed in  claim 16 , wherein the fluid flows through a stepped arrangement made up of a plurality of the fixed beds contained in the heat storage and release means. 
     
     
         18 . A method as claimed in  claim 16 , wherein the heat storage and release means has a substantially cylindrical shape. 
     
     
         19 . A method as claimed in  claim 18 , wherein the fluid flows radially through the fixed bed of the heat storage and release means. 
     
     
         20 . A method as claimed in  claim 18 , wherein the fluid flows axially through the fixed bed of the heat storage and release means. 
     
     
         21 . A compressed-gas energy storage and recovery method, wherein the following steps are carried out:
 a) compressing a gas,   b) cooling the compressed gas by heat exchange with a fixed bed of heat storage and release particles,   c) storing the cooled gas,   d) heating the cooled compressed gas by releasing the heat of the fixed bed of the heat storage and release particles, and   e) expanding the heated compressed gas so as to generate energy,   and wherein heat storage and release is carried out according to the heat storage and release method as claimed in  claim 16 .