US2015114593A1PendingUtilityA1

System for storing thermal energy

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Individually held — no corporate assignee on recordPriority: Oct 9, 2013Filed: Oct 9, 2014Published: Apr 30, 2015
Est. expiryOct 9, 2033(~7.2 yrs left)· nominal 20-yr term from priority
Inventors:Juan Manuel Caruncho Rodado
F28D 20/0034F28D 2020/0047F28D 2020/0082Y02E60/14
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Claims

Abstract

System for storing thermal energy comprising, at least, a first container ( 1 ) storing a heat transfer fluid at a higher temperature and, at least, a second container ( 2 ) storing the heat transfer fluid at a lower temperature, linked by means of elements capable of using the energy due to the thermal gap therebetween; where the first container ( 1 ) and the second container ( 2 ) are made entirely or partly of a material having a great heat storage capability, the first container ( 1 ) being provided inside the second container ( 2 ) by means of a division ( 1 a ) which inside is in contact with the fluid at a higher temperature, and outside with the fluid at a lower temperature.

Claims

exact text as granted — not AI-modified
1 . System for storing thermal energy of the type comprising, at least, a first container ( 1 ) storing a heat transfer fluid at a higher temperature and, at least, a second container ( 2 ) storing the heat transfer fluid at a lower temperature, linked by means of elements capable of using the energy due to the thermal gap therebetween; characterized in that the first container ( 1 ) and the second container ( 2 ) are made entirely or partly of a material having a great heat storage capability, the first container ( 1 ) being provided inside the second container ( 2 ) by means of a division ( 1   a ) which inside is in contact with the fluid at a higher temperature, and outside with the fluid at a lower temperature. 
     
     
         2 . System for storing thermal energy according to  claim 1 , characterized in that both containers ( 1 ,  2 ) share the same base ( 11 ), while the division ( 1   a ) and the lateral cover ( 2   a ) comprise walls emerging from said base ( 11 ). 
     
     
         3 . System for storing thermal energy according to  claim 1 , characterized in that both containers ( 1 ,  2 ) share the same cover ( 10 ), the division ( 1   a ) being provided separately therefrom. 
     
     
         4 . System for storing thermal energy according to  claim 1 , characterized in that both containers ( 1 ,  2 ) are provided on a common foundation slab ( 3 ) made of a material having a great heat storing capability. 
     
     
         5 . System for storing thermal energy according to  claim 4 , characterized in that the slab ( 3 ) has a lower thermal insulation ( 7 ). 
     
     
         6 . System for storing thermal energy according to  claim 3 , characterized in that the first container ( 1 ) and/or the second container ( 2 ) are provided with inner structural elements for supporting the cover ( 10 ). 
     
     
         7 . System for storing thermal energy according to  claim 6 , characterized in that the structural elements for supporting the cover ( 10 ) comprise pillars ( 6 ). 
     
     
         8 . System for storing thermal energy according to  claim 1 , characterized in that some parts of the containers ( 1 ,  2 ) in contact with the heat transfer fluid have a relief ( 4 ) for increasing the thermal exchange surface therewith. 
     
     
         9 . System for storing thermal energy according to  claim 8 , characterized in that the relief ( 4 ) are provided on the inner face of division ( 1   a ). 
     
     
         10 . System for storing thermal energy according to  claim 1 , characterized in that the division ( 1   a ) is provided with an upper channel ( 5 ) for pouring the heat transfer fluid to the first container ( 1 ). 
     
     
         11 . System for storing thermal energy according to  claim 1 , characterized in that the material having a great heat storage capability comprises heat storage concrete. 
     
     
         12 . System for storing thermal energy according to  claim 1 , characterized in that the heat transfer fluid comprises molten salt. 
     
     
         13 . System for storing thermal energy according to  claim 11 , characterized in that the concrete is provided with reinforcing bars made of an alloy which is resistant to corrosion when in contact with the salt. 
     
     
         14 . System for storing thermal energy according to  claim 11 , characterized in that the concrete is provided with reinforcing bars made of pultruded stone fiber. 
     
     
         15 . System for storing thermal energy according to  claim 1 , characterized in that external portions of the system incorporate external coatings made of thermally isolating materials. 
     
     
         16 . System for storing thermal energy according to  claim 15 , characterized in that the external coatings made of thermally isolating materials comprise heat isolation concrete. 
     
     
         17 . System for storing thermal energy according to  claim 1 , characterized by comprising a number of containers provided each inside the next, thus making up a number of pairs formed by a first container ( 1 ) and a second container ( 2 ) for taking advantage of the temperature gaps between these pairs. 
     
     
         18 . System for storing thermal energy according to  claim 2 , characterized in that both containers ( 1 ,  2 ) are provided on a common foundation slab ( 3 ) made of a material having a great heat storing capability. 
     
     
         19 . System for storing thermal energy according to  claim 3 , characterized in that both containers ( 1 ,  2 ) are provided on a common foundation slab ( 3 ) made of a material having a great heat storing capability. 
     
     
         20 . System for storing thermal energy according to  claim 18 , characterized in that the slab ( 3 ) has a lower thermal insulation ( 7 ).

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