| 摘要 |
<p>PURPOSE:To enable to heat a heating medium to a high temperature, by reducing the heat loss of the heating medium that is heated by use of a transparent, heat-insulating vacuum panel. CONSTITUTION:A heat-insulating vacuum panel B is constituted by interposing heat-insulating spacers made of beams 7a-7c of glass, quartz or heat-resistant plastics between transparent outer plates 5 and 6 also made of glass, quartz or the like, and it transmits the solar rays at a rate higher than 83%. The panel B is disposed in the manner of covering the upper side of a reflector mirror 2 and a heating-medium passage 3 and is fixed to the inside of an outer frame 1 in a freely detachable manner. Thus, since the solar heat collecting apparatus of this invention is arranged such that the upper side of the heat receiving surface is covered by a transparent, heat-insulating vacuum panel B as described above, heat loss from the heat receiving surface can be reduced remarkably and heating medium can be heated to a high temperature at a high efficiency, so that the apparatus can be utilized also for industrial purposes such as generation of electricity.</p> |
