中国电机工程学报Issue(1)：126-132,7.DOI:10.13334/j.0258-8013.pcsee.2015.01.016
槽式太阳能腔体式吸热器热力性能分析
Analysis of Thermodynamic Performance of Cavity Absorber in the Parabolic Trough Solar Concentrator
摘要
Abstract
The paper presented the structure and focusing principle of cavity absorber in the parabolic trough solar concentrator that was suitable for low and medium temperature solar thermal electric generation with organic Rankine cycle(ORC). The optical characteristics were studied by TRACEPRO software,and it was approved that the absorber reliably accepted solar radiation. This paper first established a two-dimensional steady-state heat transfer model, and selected R123 as working fluid, then systematically analyzed the major influence factors, including the solar irradiation, working pressure, flow rate, wind speed, and thickness of insulating layer, on the supercritical heat transfer processes. The results show that increasing mass flow rate should be carried out to enhance the heat absorption and keep the absorber tube in the safe state under supercritical condition. Equipment cost rises with increasing the inlet pressure, and can't improve the performance. The suitable insulation thickness can effectively reduce heat loss and improve performance of the absorber. The research results offer a reference for designing and building cavity absorber experimental system.关键词
槽式太阳能热发电/腔体式吸热器/二维稳态传热模型/超临界流体/R123/集热效率Key words
parabolic trough solar thermal power/cavity absorber/two-dimensional steady-state heat transfer model/supercritical fluid/R123/heat collection efficiency分类
能源科技引用本文复制引用
刘庆君,刘德有,朱天宇,毛宇飞,王磊..槽式太阳能腔体式吸热器热力性能分析[J].中国电机工程学报,2015,(1):126-132,7.基金项目
国家重点基础研究发展计划项目(973计划)(2010CB 227102)；江苏省科技支撑计划项目(BE2013070)；河海大学中央高校基本科研业务费项目(2013B19014)。National Basic Research Program of China (973 Program)(2010CB227102) （973计划）
Jiangsu Province Science and Technology Support Plan Project(BE2013070) （BE2013070）
Hohai University Fundamental Research Funds for the Central Universities(2013B19014) （2013B19014）
