考虑环境风时碟式太阳能热发电系统用腔式吸热器的热性能模拟THERMAL PERFORMANCE SIMULATION OF CAVITY RECEIVER FOR DISH CSP SYSTEMS CONSIDERING AMBIENT WIND
王晓文,屠楠,方嘉宾,王驰宇,刘晓群,刘家琛
摘要(Abstract):
吸热器是碟式太阳能热发电系统中集热系统的关键部件,为了探究环境因素对吸热器热性能的影响,利用光线追踪和数值计算的方法,在考虑环境风的情况下,对腔式吸热器进行了不同工况时的热性能模拟,讨论分析了太阳高度角、环境风风向、风速及传热工质进口状态对腔式吸热器热性能的影响。结果表明:太阳高度角越小,腔式吸热器对流热损失越大;随着环境风风向角的增大,无论风速如何,腔式吸热器的热损失都呈现先减小后增大的趋势,当风向角为135°时的热损失最小,风向角小于45°时的热损失较大;任何风向下,腔式吸热器的热损失都随着环境风风速的增大而增大,且在0°和45°风向角下,腔式吸热器对于风速变化较为敏感;传热工质进口流量的增加会提升腔式吸热器的热性能,进口温度的提高则会降低腔式吸热器的热性能,且对其影响的规律呈线性。
关键词(KeyWords): 太阳能热发电;碟式;腔式吸热器;螺旋盘管;环境风;传热特性;热性能
基金项目(Foundation): 陕西省秦创原“科学家+工程师”队伍建设项目(2022KXJ-179);; 西安市现代智能纺织装备重点实验室建设项目(2019220614SYS021CG043)
作者(Author): 王晓文,屠楠,方嘉宾,王驰宇,刘晓群,刘家琛
DOI: 10.19911/j.1003-0417.tyn20230215.01
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