Heat storage container and heat storage device provided with heat storage container

Abstract

Provided is a heat storage system that is capable of improving the calorific quantity and the heat transport amount using a simple configuration, a heat storage container, and a heat storage device in which the heat storage container is used. A heat storage system in which is used a heat storage container having a tubular body, a chemical heat storage element accommodated in the tubular body, and a flow channel that penetrates the tubular body in the longitudinal direction, wherein: the heat storage system has a diffusion layer for transporting, from the flow channel toward the chemical heat storage element, a liquid that functions as a reaction medium with the chemical heat storage element; the liquid is transported in the flow channel; the liquid is transported to the diffusion layer; the liquid transported to the diffusion layer reacts with the chemical heat storage element, and the chemical heat storage material generates heat; and the liquid is vaporized by the heat to become a heat transporting fluid.

Description

technical field [0001] The present invention relates to a heat accumulator using a chemical heat storage material and a heat storage device including the heat accumulator. The reverse reaction of endothermic reversible reaction, heat release and heat storage are repeated. Background technique [0002] The heat storage amount per unit volume of the chemical heat storage material is large, and even if the chemical heat storage material after heat storage is stored for a long time, the heat loss is extremely small. Storage and utilization of heat discharged from industrial plants (plants). [0003] Therefore, if Figure 8 As shown, a heat storage container 6 is proposed in which a chemical heat storage material complex including a powdery chemical heat storage material 62 and a foaming expansion material 63 arranged adjacent to the chemical heat storage material 62 is housed in an inner tube 61 Between the outer tube 67 and the chemical heat storage material 62, the reaction ...

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Problems solved by technology

However, in the heat storage container 6 of Patent Document 1, since it is necessary to separately provide the reaction channel 64 for supplying water vapor and the heat exchange channel 66 for supplying the heat exchange medium, there is a problem that the piping structure becomes complicated.

In addition, since the amount of the chemical heat storage material 62 that can be mounted on the heat storage container 6 decreases due to the complexity of the piping structure, there is a problem that the heat utilization per unit volume of the heat storage container 6 (heat storage density) decreases.

[0004] In addition, in the heat storage container 6 of Patent Document 1, if a gaseous fluid is used as the heat exchange medium, only sensible heat can be supplied to the gaseous fluid, so the heat transfer amount of the heat exchange medium is limited. In addition, there is also the following problem: In order to supply the gaseous heat exchange medium to the heat storage container 6 and to prevent the temperature drop of the heat exchange medium storage container due to the heat of vaporization, it is necessary to inject energy, in addition, there is also the following problem: if gas such as water vapor is used as the reaction fluid, the heat released from the chemical heat storage material 62 cannot be improved.

However, if a liquid such as water is used as a reactive fluid, there is a problem that even if a powdery chemical heat storage material is compression-molded, the shape of the chemical heat storage material will be destroyed due to repeated heat release and heat storage. This will cause the chemical heat storage material to flow out of the heat storage container

[0006] It should be noted that there is a problem that when a heat storage device is provided with a heat storage container using a liquid such as water as a reaction fluid in a circulation system of an airtight and degassed reaction fluid, sometimes The reaction fluid vaporized in the heat storage container will flow back to the side of the reaction fluid storage tank provided in the heat storage device and used to supply the reaction fluid to the heat storage container, making it difficult for the reaction fluid to transfer heat to the heat utilization target. Condenser side flow of connected heat storage unit

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