基于线性菲涅尔反射聚光的接收器优化研究学士学位论文VIP专享

提供全套毕业论文图纸，欢迎咨询基于线性菲涅尔反射聚光的接收器优化讨论摘要太阳能热发电系统中的核心部件是接收器，承载着光热转换的能力，其性能好坏直接关系着系统温度的提升，效率的提高。经过对当前几种较常常使用的太阳能接收器，如直管式接收器、真空管接收器、空腔式接收器进行对比，发现直管式接收器和真空管接收器构造较简单，而空腔式接收器能够达到更高的系统温度吸热效果更好。由于空腔式接收器中针状放射形吸收体的加工和安装所需的技术要求高，本文提出了一种新型结构的吸收体，讨论结果表明，与其他吸收体相比，此种构造的吸收器可以达到良好的强化换热的效果，系统效率也有所提高。对于真空腔吸收器而言，吸收器的效率与腔体内壁温度成正比，与外壁温度成反比，综合提高内壁热吸收效率和降低外壁温度，本文选用内外普遍认可的具有较高热力学性能的的有机硅涂层材料作为腔体的结构材料。此外，采纳真空腔技术，大大降低了腔体外壁的温度，系统效率也有所提高。最后，本文对接收器的几何尺寸进行优化设计，探究了腔体吸收器在不同几何尺寸下的热性能。综上所述，优化后的腔体接收器应用于基于线性菲涅尔反射镜聚光器系统中能够有效的聚集太阳能，提高太阳能集热器的效率，降低生产成本，进展前景宽阔。 关键词：太阳能，菲涅尔反射镜，聚光器，腔体接收器，优化AbstractThe receiver is the central part of solar thermal power system, responsible for bearing the solar-thermal conversion, its performance is directly related to ascense temperature, improve efficiency of the system. After comparing of severalreceiver of more often used for the current, such as straight pipe receiver , vacuum receiver, cavity receiver, it found that the straight pipe receiver and vacuum receiver is relatively simple in structure, and the cavity receiver can achieve higher temperature of the system, heat absorption effect is better. Due to high technical requirements is equired of the cavity receiver absorber fabrication and installation in needle distribution , this paper puts forward aabsorberof new type structure ,the research results show that, compared...