In linear Fresnel collectors (LFCs), a receiver composed of CPC secondary reflector and evacuated tube need to be highly coupled with the mirror field. An optimized design method of the LFC is proposed in this paper. Firstly, a mathematical model of the CPC for the LFC is established, with the effects of the choice of half-acceptance angle and truncation ratio on the geometrical optics efficiency of the CPC studied by using the ray tracing method according to the characteristics of the LFC. Secondly, a method for designing the mirror field without shading is presented by using the half-acceptance angle of the CPC to limit its height-width ratio. Finally, a scheme for designing the mirror field is proposed, considering the ground utilization ratio and the mean shading and blocking efficiency. The results indicate that the optimized CPC at half-acceptance angle 50° and truncation ratio 0.4 for the LFC can achieve the geometrical optics efficiency of 84.52%. The designed mirror field can achieve the ground utilization ratio of 73.08% and the mean shading and blocking efficiency of 97.56%.

在线性菲涅耳收集器（LFC）中，由CPC次级反射器和真空管组成的接收器需要与镜场高度耦合。提出了一种LFC的优化设计方法。首先建立了LFC的CPC的数学模型，根据LFC的特点，利用光线跟踪法研究了半接受角和截断比的选择对CPC几何光学效率的影响。 。其次，提出了一种通过使用CPC的半接收角来限制其高宽比来设计无阴影的镜场的方法。最后，结合地面利用率和平均遮挡效率，提出了一种镜面场的设计方案。结果表明，LFC的半接收角为50°，截断比为0.4时，优化的CPC可以达到84.52％的几何光学效率。设计的镜面可以达到73.08％的地面利用率，平均遮挡和遮挡效率为97.56％。