Heat storage unit

A heat storage unit used in a heat exchange device, wherein

• the heat exchange device further includes:
• a temperature adjustment unit that adjusts a temperature of an object to be installed thereinside;
• a heating medium supply unit that is directly connected to the heat storage unit and to which the heating medium led out from the heat storage unit is supplied, wherein the heating medium supply unit is configured to adjust a temperature of the heating medium supplied thereto to a predetermined temperature;
• a first supply flow path that connects the heating medium supply unit to the temperature adjustment unit, and supplies the heating medium led out from the heating medium supply unit to the temperature adjustment unit;
• a return flow path that connects the temperature adjustment unit to the heating medium supply unit through the heat storage unit, and returns the heating medium led out from the temperature adjustment unit to the heating medium supply unit such that an operation circulation is completed through which the heating medium circulates passing through the heating medium supply unit, the temperature adjustment unit and the heat storage unit;
• a second supply flow path that connects the heating medium supply unit to the heat storage unit such that a reproduction circulation is completed through which the heating medium led out from the heating medium supply unit is directly supplied to the heat storage unit without passing through the temperature adjustment unit, then returning to the heating medium supply unit;
• and
• a flow path forming unit that is placed in the first supply flow path, and is configured to switch a flow of the heating medium either to the first supply flow path or to the second supply flow path, and
• the heat storage unit includes:
• at least one inorganic fiber body configured by binding metal fibers and having a desired shape;
• a heat storage material formed in contact with the metal fibers, and
• the metal fibers are made of either a single metal or an alloy, the single metal being selected from a group consisting of copper, silver, gold, platinum, aluminum, nickel, chromium, and tungsten, and the alloy being selected from a group consisting of stainless steel, a copper alloy, a tungsten alloy, and a chromium alloy, wherein
• when the heating medium flows in the first supply flow path by the flow path forming unit, the temperature of the heating medium is brought close to the predetermined temperature by heat exchange between the heat storage material and the heating medium, and
• when the heating medium flows in the second supply flow path by the flow path forming unit, the heat storage material is regenerated by heat exchange between the heat storage material and the heating medium.