步进式太阳能自动跟踪装置

步进式太阳能自动跟踪装置章之华跟踪精度、可靠性、制造成本及自耗电率是衡量一种跟踪系统是否有实际应用价值的重要指标，步进式太阳能跟踪装置能较好地满足这些要求，其样机已在内蒙古自治区固阳县使用。用来带动３０ｋｇ重的低倍聚光太阳电池方阵。一年多来运行情况良...     

太阳能集能器自动跟踪装置

太阳能集能器自动跟踪装置采用了光电自动摔制的原理与技术。当信号探测器接收到太阳光线发生偏转的信号后，传给电子自动控制电路；通过模数转换对信号进行分析，给出指令，电机通过减速机构转动集能器。使其精确地对准太阳，从析实现了对太阳方位角和太阳高度角的二维自动跟踪，大大地提高了太阳能利用率。     

太阳能电池板自动跟踪电路设计

本文提出了一种智能路灯上的太阳能电池板的自动转向的控制电路设计方法.根据七点法定位器的原理,以光敏二极管作为采光传感器,七点法定位器做驱动跟踪,单片机作为主控制器,采用光电跟踪与时序跟踪相结合的方法完成了系统的软硬件设计,解决了天气对自动跟踪系统的影响问题,降低了运行成本,提高了太阳能的利用效率.     

自动跟踪聚焦式太阳能光伏发电技术

详细阐述了已研制成功的精密太阳能自动跟踪聚集式光伏发电系统的组成，包括结构、部件、配套设备等，同时介绍了系统的主要技术，分析了该技术的先进性及其带来的经济效益。     

太阳强光自动跟踪装置的设计

如何提高光电池的工作效率?这是人们利用太阳能发电十分关注的技术关键,本文提出了太阳强光“自动跟踪”方案。经实践检验,采用跟踪装置后,电池板的平均输出能量提高30％以上。1“自动跟踪”装置的原理     

太阳能自动跟踪发电系统的创新设计

针对现有太阳能光伏发电装置能量转换效率较低的缺陷,设计了一种新型太阳能光伏发电系统——双轴自动跟踪发电系统。研制了光电传感器,分析了光电传感器的工作原理;设计了系统的信号处理及控制电路。该系统能使太阳电池板在晴天始终保持与太阳光线垂直,在夜晚、阴天或太阳光辐照度低于工作照度时自动关机。为了得到该系统的发电功率随时间和天气变化的情况,进行了实验研究,最终得到光伏发电功率随时间和天气变化的规律。     

五点法自动跟踪太阳装置

1引言 随着社会经济的发展，能源和资源的消耗速度越来越快。节约能源、保护环境已经成为人类可持续发展的必要条件，人们的注意力正转向再生能源的开发和利用。为了最大限度地吸收、转换太阳能．接收器就应不断地转动方向．使太阳光线始终与太阳能接收器垂直。     

极轴式太阳能跟踪机构

介绍并设计了一种极轴式太阳能跟踪机构,以极轴旋转抵消地球自转,以俯仰角调节抵消地球公转,实现太阳位置的完全跟踪。通过与其他跟踪方式的对比,体现出该机构结构简单、跟踪精度高的优点,该机构性价比很高,具有广阔的应用前景。     

太阳能集热器跟踪传感器

应太阳能集热器发展的需要提出一种新型跟踪随动系统传感器。该传感器结构新颖,构思巧妙,造价低廉,丰富了太阳能集热器跟踪随动系统传感器的类型。     

A stationary solar energy concentrator

A parabolic reflector having a short focal length will keep the sun's rays focused within a small area for several hours without the employment of a heliostat mechanism. Its use as a steam generator and as a stove is described.     

家用太阳能热水器集热管内外清洗装置

当太阳能热水器的集热管外蒙尘污、内带水垢时,其集热效果会明显降低。文章设计了清洗集热玻璃管外部尘污和玻璃集热管内部水垢的装置。擦洗集热玻璃管外部时,只要在室内按动开关即可自动完成;清洗玻璃集热管内部水垢时,不必拆卸集热管,也不须使用化学清洗剂。     

Electronic film with embedded micro-mirrors for solar energy concentrator systems

A novel electronic film solar energy concentrator with embedded micro-mirrors that track the sun is described. The potential viability of this new concept is presented. Due to miniaturization, the amount of material needed for the optical system is minimal. Because it is light-weight and flexible, it can easily be attached to the land or existing structures. This presents an economic advantage over conventional concentrators which require the construction of a separate structure to support them, and motors to orient them to intercept and properly reflect sunlight. Such separate structures must be able to survive gusts, windstorms, earthquakes, etc. This concentrator utilizes the ground or existing edifices which are already capable of withstanding such vicissitudes of nature.     

The realization of a simple solar tracking concentrator for university research applications

A tracking parabolic concentrator was built from easily available and affordable components. Simplicity and ease of assembly were prime considerations. Considerable experience was gained in the design, assembly and testing. The system performed reasonably well considering its simplicity and rapid assembly. As an educational tool, demonstrating both energy conversion and control, or for simple high temperature experiments and applications, any university could easily set up a similar working concentrator at a very low cost.     

菲涅耳反射式太阳能聚光系统的三运动复合跟踪

提出了线性菲涅耳式太阳能反射聚光系统新的跟踪方式:置于接收器上方的二次聚光器配合镜场平移的同时进行旋转,与平面镜的转动组成三运动复合形式。通过镜场的整体平移减小余弦损失,提高系统整体的聚光集热效率。从理论分析和计算机模拟两个方面对这种三运动复合形式进行的研究发现,三运动系统的总余弦损失在一天中基本不变。对一个24 m2镜场的测试分析表明,在夏季晴天条件下,三运动复合系统的有效能量增加率约为5.8%,每天的能量增益达到38 MJ左右。     

Potential of a parabolic trough solar concentrator for electric energy production

At present, parabolic trough technology is considered as the most low‐cost and powerful large‐scale technology to utilize solar energy for electricity generation and produce steam for different industrial usages. This article recommends the generation of electricity by using a parabolic trough solar concentrator in the central area of the Kingdom of Saudi Arabia (KSA) at Dawadmi city. Pressurized water is used as the heat‐transfer working fluid. A computer algorithm was built using the Matlab program to simulate the performance parameters of the Euro Trough collector (ETC). The input data included the properties of the working fluid (pressurized water) and the designing parameters of ETC. The output data were the outlet water temperature, the coefficient of heat transfer, the heat loss, and the thermal, solar, and global efficiencies. The obtained results indicated the ability of this type of parabolic trough in KSA to generate electric power due to the high‐performance parameters achieved. Also, the validity of using the simulation technique was measured and it showed good conformity.     

太阳能跟踪装置风载荷的计算方法

风载荷是跟踪装置所承受的主要载荷,其大小直接影响整个系统的结构强度以及装置传动部件的选择。太阳能跟踪装置的常规形式属于非流线的可旋转平板结构,其风载荷主要与风力系数相关。文章详细分析了跟踪装置的风载荷,比较了3种不同风力系数的计算方法,结果表明:三维CFD数值计算方法与系统的实际试验结果更加吻合。     

Optimized excitation energy transfer in a three-dye luminescent solar concentrator

The spectral range of sunlight absorbed by a luminescent solar concentrator (LSC) is increased by using multiple dyes. Absorption, fluorescence, and fluorescence excitation spectra, and relative light output are reported for LSCs made with one, two, or three BODIPY dyes in a thin polymer layer on glass. Losses caused by multiple emission and reabsorption events are minimized by optimizing resonance excitation energy transfer between dyes. Increases in the outputs from the multiple-dye LSCs are directly proportional to increases in the number of photons absorbed. The output of the three-dye LSC is 45–170% higher than those of the single-dye LSCs.