| 摘要 |
A conical beam concentrator mounted on the exterior concrete-block wall of a circular building so as to receive diffused sunlight and emit a concentrated convergent lateral beam in the horizontal plane; a curved glass block mounted in the wall so as to transmit the convergent lateral beam through the wall into the crawl space beneath the building; and a circular conical beam concentrator mounted in the crawl space in the center of the building so as to receive the convergent lateral beam, refract the beam twice more and emit a concentrated convergent lateral beam onto a vertical metal heating element which absorbs the heat of the beam and radiates the heat into the crawl space of the building.
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