【摘要】 阐述太阳能热风发电系统的理论工作循环和影响系统性能主要参数。为便于系统模型的实验研究,利用量纲分析方法,将多个主要影响因素转化成2个无量纲参数。分析模型间的动力相似性能,并用有限体积法数值验证3个模型的无量纲参数的相同规律。计算时把系统集热棚下的地面所吸收到的太阳辐射能当作恒定内热源来处理边界条件。结果表明太阳能热风发电系统模型间具有动力相似性。为推广到相似的模型上深入研究系统的性能提供重要参考。更多还原

【Abstract】 The standard working cycle of the solar chimney power plant system and parameters influencing its performance are presented.Based on the dimensional analysis,two dimensionless parameters were obtained from various influencing factors to guide the experimental study in a small-scale solar chimney power plant.The dynamic similarity among three solar chimney models is analyzed,and the infinite volume method was used to validate the similarity among dimensionless parameters of these models.In calculation,the solar radiation energy absorbed by the ground surface under the heat collector is considered as the constant inner heat source.The calculation results show that there is dynamic similarity among solar chimney power plant models.更多还原