Heat storage devices
First Claim
1. The device for storing and discharging heat including a housing having an internal volume, an array of capsules within the housing, and a thermal energy storage material contained in the capsules, wherein the device exhibits an average initial power density of heat transferred to a heat transfer fluid of at least 8 kW/L based on the internal volume of the housing wherein the average initial power density is defined over an initial 30 seconds, wherein the average initial power density is measured on the device having an initial temperature of 280°
- C. in the housing, and the heat transfer fluid having an initial temperature of 10°
C.;
wherein the thermal energy storage material is encapsulated between two metal plies, the metal plies have a thickness on the order of 10−
1 to 102 μ
m, the capsules have a thickness from 0.5 mm to 20 mm, the volume fraction of the thermal energy storage material in the housing is 0.5 or more, the housing includes an inlet and an outlet and one or more flow paths for flowing a heat transfer fluid through the housing, and wherein the one or more flow paths and the array of capsules are arranged so that the device has the required average initial power density.
3 Assignments
0 Petitions
Accused Products
Abstract
A device for storing and discharging heat that employs thermal energy storage materials (TESM) and related methods of manufacturing the device. The device includes a housing, an array of capsules within the housing, and TESM contained in the capsules. The device exhibits a high initial power density. The TESM is encapsulated between metal plies. The metal plies may have a thickness on the order of 10−1 to 102 μm. The capsules may have a thickness from 0.5 mm to 20 mm. The volume fraction of TESM in the housing may be 0.5 or more. The housing includes an inlet, an outlet, and one or more flow paths for flowing a heat transfer fluid through the housing. The flow paths and the capsules are arranged so that the device has the required average initial power density.
123 Citations
19 Claims
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1. The device for storing and discharging heat including a housing having an internal volume, an array of capsules within the housing, and a thermal energy storage material contained in the capsules, wherein the device exhibits an average initial power density of heat transferred to a heat transfer fluid of at least 8 kW/L based on the internal volume of the housing wherein the average initial power density is defined over an initial 30 seconds, wherein the average initial power density is measured on the device having an initial temperature of 280°
- C. in the housing, and the heat transfer fluid having an initial temperature of 10°
C.;
wherein the thermal energy storage material is encapsulated between two metal plies, the metal plies have a thickness on the order of 10−
1 to 102 μ
m, the capsules have a thickness from 0.5 mm to 20 mm, the volume fraction of the thermal energy storage material in the housing is 0.5 or more, the housing includes an inlet and an outlet and one or more flow paths for flowing a heat transfer fluid through the housing, and wherein the one or more flow paths and the array of capsules are arranged so that the device has the required average initial power density. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- C. in the housing, and the heat transfer fluid having an initial temperature of 10°
-
13. A method for producing a heat storage device comprising:
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i) deforming a first metal foil such that a first ply having a trough is formed; ii) at least partially filling the trough with a thermal energy storage material; iii) heating the thermal energy storage material for a time and temperature above the liquidus temperature of the thermal energy storage material such that the thermal energy storage material is essentially free of water; iv) placing a second ply of the metal foil on top of the first ply such that a surface of the first ply and a surface of the second ply are in partial contact; and v) sealing a portion of the facing surfaces of the first ply and the second ply, such that a blister pack containing a plurality of capsules containing the thermal energy storage material is formed, the capsules are in thermal conducting relation with each other, and the thermal energy storage material is prevented from escaping from the capsules during operation in their intended environment; wherein the device includes a housing having an internal volume, an array of capsules within the housing, and a thermal energy storage material contained in the capsules, wherein the device exhibits an average initial power density of heat transferred to a heat transfer fluid of at least 8 kW/L based on the internal volume of the housing wherein the average initial power density is defined over an initial 30 seconds, wherein the average initial power density is measured on the device having an initial temperature of 280°
C. in the housing, and the heat transfer fluid having an initial temperature of 10°
C.;
wherein the thermal energy storage material is encapsulated between two metal plies, the metal plies have a thickness on the order of 10−
1 to 102 μ
m, the capsules have a thickness from 0.5 mm to 20 mm, the volume fraction of the thermal energy storage material in the housing is 0.5 or more, the housing includes an inlet and an outlet and one or more flow paths for flowing a heat transfer fluid through the housing, and wherein the one or more flow paths and the array of capsules are arranged so that the device has the required average initial power density. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification