| 摘要 |
PURPOSE:To reduce the heat dessipation loss from an inner heat accumulating part and consequently enable to accumulate and keep high temperature heat by a structure wherein a heat accumulator is made in dual structure. CONSTITUTION:A heat accumulator 7 is made in dual structure by providing an inner heat accumulating part at the center of the heat accumulator 7 and at the same time an outer heat accumulating part 9 in the periphery of the inner heat accumulating part 8 so as to cover the part 8. The inner heat accumulating part 8 and the outer heat accumulating part 9 can independently accumulate heat. Heat accumulating material is respectively packed in each of the heat accumulating parts 8 and 9. A damper 11 (a flow passage selector) is arranged in a feed pipe 10 and actuated so as to send the heated air left from heat collector 1 either to the inner heat accumulating part 8 or to the outer heat accumulating part 9. The actuation of the damper 11 is controlled based upon the temperature T0 at the outlet of the heat collector 1, and the temperatures T1 and T2 of the respective heat accumulating parts. The inner heat accumulating part 8 is used especially for accumulating high temperature heat and the outer heat accumulating part 9 also has the function as lagging to suppress the heat dissipation loss from the inner heat accumulating part 8 by accumulating heat with the same high temperature as that of the inner heat accumulating part 8 on the day with plenty of insolation. |
