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本文说明静止的复式抛物线聚光器(简巧CPC)采用双面电池可以有效地提高发电能力,从而降低成本。这种聚光器不需要连续跟踪太阳运动,只需要季节性地调整其光轴方向,本文扼要介绍了CPC的原理并较详细地说明了试验结果。我们的试样能够允许入射光方向在±6°内偏移,采用了双面电池后的几何聚光倍率为10倍(削顶掉90％时为10倍,未削顶时为20倍),测得的实际光通量聚光倍率约为6.8倍(削顶90％时)。我们还测试了放置电池处光通量密度的分布,试验表明用窄的电池(电池高度=(1/2)焦距)聚光倍率可以比宽的电池(电池高度=焦距)高(从约6.8倍提高到约10.8倍)我们对CPC在不同程度削顶下作了试验,并与理论计算作了对比,最后通过分析说明:深度削顶的CPC适当采用较大些的θmax是合适的。这种聚光器在夏至和冬至一段时间大约只需一个月调整一次光轴方向,在春分和秋分附近期间大约需一个多星期调整一次光轴方向。
This article shows that static dual parabolic concentrators (Compact CPC) use double-sided cells to effectively increase power generation and thereby reduce costs. This concentrator does not need to track the sun’s motion continuously, only needs to adjust its optical axis direction periodically. This article briefly introduces the principle of CPC and explains the test results in detail. Our sample allows for a shift of ± 6 ° of the incident light direction and a geometric condensing magnification of 10 times with a 2-sided battery (10 times when topped off 90% and 20 times when topped off) , The measured actual luminous flux concentrator ratio of about 6.8 times (90% top cut). We also tested the distribution of luminous flux density at the place where the battery was placed. Experiments showed that with a narrow cell (cell height = (1/2) focal length) the spotlight magnification can be higher than a wide cell (cell height = focal length) To about 10.8 times). We have tested CPC under varying degrees of undercutting and compared it with the theoretical calculation. Finally, the analysis shows that it is appropriate for the depth-shaved CPC to use larger θmax appropriately. The concentrator adjusts the optical axis in just about a month during the summer solstice and the winter solstice. It takes about a week or more to adjust the optical axis during the equinox and autumnal equinoxes.