HEAT STORAGE SYSTEM

To provide a heat storage device and a heat storage method capable of reducing heat storage loss to increase effectively-used heat quantity, and capable of instantly responding to irregular demand for heat energy.SOLUTION: A heat release/storage method comprises: performing heat exchange between heated gas and heat source gas having a higher moisture content than the heated gas to warm the heated gas; during heat storage operation, bring the heated gas having undergone heat exchange into contact with a heat storage material, and extracting the gas having been brought into contact with the heat storage material from a system; and during heat release operation, bring the heat source gas having undergone heat exchange and the heated gas having not undergone heat exchange into contact with the heat storage material, and supplying the gas having been brought into contact with the heat storage material to a demand destination.SELECTED DRAWING: Figure 1 【課題】蓄熱損失を減らして有効利用される熱量を増やすことができ、熱エネルギーの不定期な需要に即座に対応することができる蓄放熱装置および蓄放熱方法を提供する。【解決手段】被加熱ガスと水分量が被加熱ガスよりも高い熱源ガスとの間で熱交換を行って被加熱ガスを温め、蓄熱運転時に、熱交換の行われた被加熱ガスを蓄熱材に接触させ、蓄熱材に接触させたガスを系外に抜き出し、放熱運転時に、熱交換の行われた熱源ガスと熱交換の行われていない被加熱ガスを蓄熱材に接触させ、蓄熱材に接触させたガスを需要先に供給する、ことを含む、蓄放熱方法。【選択図】図１