折面形抛物柱太阳能聚光器

针对抛物柱曲面镀银玻璃太阳能聚光器聚光不均匀、加工费用高及银反射层易脱落等 3大缺陷 ,研制出了一种用“多折面”代替“曲面”、用“镀银双层玻璃”代替“镀银玻璃”的新型抛物柱折面形镀银玻璃太阳能聚光器。理论与实践结合 ,有效地克服了原太阳能聚光器的弱点 。

太阳双轴自动跟踪系统的设计

主要论述自动跟踪控制器的设计。该产品通过4个光电传感器自动检测太阳光的变化,通过开关电路实现双轴自动跟踪,夜晚自动返回到初始位置。控制器利用开关元器件设计,并采用分立元件电路,耗电量小、简单实用、成本低、抵御环境能力强。该产品通过运行,控制精度和功能满足设计要求。

Optical Design of a Solar Parabolic Concentrating Collector Based on Trapezoidal Reflective Petals

In this paper, detailed optical of the solar parabolic dish concentrator is presented. The system has diameter D = 2,800 mm and focal length f = 1,400 mm. The efficient conversion of solar radiation in heat at these temperature levels requires a use of concentrating solar collectors. In this paper, detailed optical design of the solar parabolic dish concentrator is presented. The parabolic dish of the solar system consists from 12 curvilinear trapezoidal reflective petals. This paper presents optical simulations of the parabolic solar concentrator unit using the ray-tracing software TracePro. The total flux on receiver and the distribution of irradiance for absorbed flux on center and periphery receiver are given. The total flux at the focal region is 4,031.3 W. The goal of this paper is to present optical design of a low-tech solar concentrator, that can be used as a potentially low-cost tool for laboratory-scale research on the medium-temperature thermal processes, cooling, industrial processes, solar cooking and polygeneration systems, etc.