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ADVANCED CAVITY RECEIVERS FOR PARABOLIC SOLAR TROUGHS

机译：抛物线太阳能事故的先进型腔接收器

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摘要

A heat-absorbing element partly enclosed in an insulating layer or jacket, has absorbing surface that is accessible to solar radiation. The thermal insulation is designed to provide entry to solar radiation by way of a cavity. In cross-section, the insulation jacket has approximately the form of a letter "C" or "U" oriented so that the opening of the "C" or "U" faces toward a parabolic collector that focuses light thereon. The absorbing surface can be substantially planar (i.e., flat) rather than another shape (for example, in one embodiment, an arc) which reduces the absorbing surface's area for a given aperture width. This reduces the area that can re-radiate heat energy away from the heat absorbing element. The heat absorbing element is supported so that its distance relative to the parabolic collector does not change as the heat absorbing element expands upon heating and contracts upon cooling.
机译：一个部分封装在绝缘层或外套中的吸热元件，其吸收表面可被太阳辐射照射。绝热材料被设计成通过空腔进入太阳辐射。在横截面中，绝缘套具有大致定向为字母“ C”或“ U”的形式，使得“ C”或“ U”的开口面向抛物线形收集器，该抛物线形收集器在其上聚焦光。吸收表面可以是基本上平坦的（即，平坦的）而不是另一种形状（例如，在一个实施例中为弧形），其减小了给定孔宽度的吸收表面的面积。这减小了可以从热吸收元件辐射出热能的区域。支撑吸热元件，使得其相对于抛物线收集器的距离不改变，因为吸热元件在加热时膨胀而在冷却时收缩。

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