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为了使太阳能集热器更有效地吸收太阳的热能和获得加热用的高温,集热器的抛物面(或透镜)必须从日出到日落始终跟随太阳自东向西转动。用图1所示的跟随器即可实现这一点。太阳的相对位置信号由圆筒抛物镜面两侧边缘下方南北放置的温度敏感器(黑管)所接受。黑管内充有常压空气。当太阳正对抛物镜面时,两黑管都处于镜面的阴影中,不受阳光照射。当太阳相对镜面向西移动时,西侧黑管受阳光照射,管内空气
In order for the solar collector to more effectively absorb the heat of the sun and to obtain the high temperature for heating, the collector’s parabola (or lens) must follow the sun’s rotation from east to west from sunrise to sunset. Use the follower shown in Figure 1 to do this. The sun’s relative position signal is accepted by a temperature sensor (black tube) placed north and south under the edges of both sides of the cylindrical parabolic mirror. Black tube filled with atmospheric air. When the sun is parabolic mirror, the two tubes are in the shadow of the mirror, from the sun. When the sun moves to the west relative to the mirror, the black tube on the west is exposed to sunlight and the air in the tube