| abstract |
The thermal storage device includes: a container in which a thermal storage material is enclosed, the thermal storage material has a temperature-sensitive polymer gel, and the temperature-sensitive polymer gel is made of a material selected from the group consisting of water, an organic solvent, and water or an organic solvent. A solvent in a compound and a temperature-sensitive polymer; and a heat exchanger, which is accommodated in a container, exchanges heat with a heating and cooling fluid to heat or cool a heat storage material, and stores warm or cold heat in a heat storage material material, and exchange heat with the heat utilization fluid to absorb heat from the heat storage material and release heat from the heat storage material. As far as the heat storage material is concerned, the hydrophilicity and hydrophobicity change reversibly with the lower limit critical solution temperature as the boundary, During the change of hydrophilicity and hydrophobicity, the solvent contained in the thermosensitive polymer gel remains in a liquid state. |