提出了一种阴影与遮挡计算分析模型,并进行了验证。等间距布置16列反射镜,瞄准线高度为9056 mm,对比了镜间距为100 mm时阴影在SolTrace软件中与所提模型中的计算结果。给出了所提模型在上述条件下确定镜场布置最佳间距的实例,结果表明合理间距为331.91 mm,与传统无阴影布置方法得到的330 mm接近,验证了所提计算模型的正确性。该模型对于线性菲涅耳聚光镜场中的阴影与遮挡分析具有普适性,对线性菲涅耳式聚光系统的设计具有较好的指导意义。

In this paper, we propose and verify a calculation and analysis model of shading and blocking in a linear Fresnel reflector system. Specifically, 16 mirrors are arranged at an equal spacing and the aiming line height is 9056 mm. For this setup, we compare the shading calculation results from the proposed model with those from SolTrace at a mirror spacing of 100 mm. Then, we present one example of how to determine the best mirror field spacing for the proposed model under the above conditions, and it is found that the ideal spacing is 331.91 mm, close to the 330 mm obtained via the traditional shadow-less layout method. Finally, we verify the accuracy of the proposed calculation model. The proposed model can be used to analyze shading and blocking in the field of a linear Fresnel reflector, and it is helpful to guide the design of a linear Fresnel reflector system.