| 摘要 |
PURPOSE:To increase heat accumulating efficiency by a method wherein a heat collecting unit and a bypass are switched. CONSTITUTION:A primary collector 1 and the secondary collector 11 are connected in series to constitute the heat collecting unit while a heat accumulating tank 3 housing a latent heat accumulating body, a heat exchanger 4 for a heat pump 17 connected with a hot-water circuit 18 and a fan 5 are connected by a circulating path 2 for a heat medium such as air or the like, and a bypass 20 bypassing the heat collecting unit through a switching device 6 is provided. |
