PROBLEM TO BE SOLVED: To readily change thermal receiving efficiency depending on circumstances while readily installing a plurality of thermal storage capsules.SOLUTION: Multiple thermal storage capsules 1 are arranged at prescribed intervals, coupled to one another via a coupling device 4 and attached to the coupling device 4 so as to freely changing a direction of a thermal receiving surface 7 of respective thermal storage capsules 1 and turning about axes in the same direction.SELECTED DRAWING: Figure 1【課題】複数の蓄熱カプセルを簡単に設置しながら、状況によってその受熱効率を簡単に変更できるようにする。【解決手段】蓄熱カプセル１の複数を、夫々所定間隔置きに並べて連結装置４を介して連結し、それらの各蓄熱カプセル１の受熱表面７の向きを変更自在に、夫々同一方向の軸心を中心に回転自在に前記連結装置４に取り付けてある。【選択図】図１
