| 摘要 |
The subject of the invention is a vacuum tube solar collector with double parabola shell, making possible the concentration of sunshine on the heat-taking tube placed in the focal point, respectively on the heat-taking liquid in the tube acting as heat medium, or on the tube condenser doing the heat transfer, so substantially greater heat output can be achieved. The vacuum tube solar collector according to the invention with double parabola shell characterized by that, the solar collector element consists of an outer tube shell (1) with double parabola cross-section, as well as an inner tube (3) of circular section which are fixed to each other with permanent joint (6) and there is a vacuum space (5) between them.
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