| 摘要 |
PCT No. PCT/AU86/00211 Sec. 371 Date Apr. 21, 1987 Sec. 102(e) Date Apr. 21, 1987 PCT Filed Jul. 24, 1986 PCT Pub. No. WO87/00608 PCT Pub. Date Jan. 29, 1987.A solar tracking device for causing a solar collector to track the sun during the course of the day and for automatically reorienting the collector to the east at the end of the day. The device (11) includes a pivotal support (13, 17) having a center of gravity below the pivot axis 16. The device further includes closed containers (25, 27) being an eastern container (25) and a western container (27). The closed containers (25, 27) are interconnected for fluid communication therebetween and contain a volatile fluid. The containers are mounted on the pivotal support (13, 17) one on each side of the pivot axis (16). A shading means (31, 32) is provided for shading the container nearer the sun more than the container further from the sun to provide unequal solar radiation on the containers when the rays of the sun are not at a predetermined relation to the containers thereby causing fluid transfer between the containers and rotation of the containers and the support about the pivot axis until equal radiation is received by both containers. The containers (25, 27) are so positioned relative to each other that the western container (27) is higher than the eastern container (25) when the device is at the rotational position which it assumes at midday.
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