EN流量对抛物面槽式太阳能集热器传热特性影响的实验分析
Experimental Analysis of the Influence of Flow Rate on Heat Transfer Characteristics of Parabolic Trough Solar Collector
- 发电技术 2021年42卷第6期 页码：665-672
- 作者机构：
1.中国科学院太阳能热利用及光伏系统重点实验室, 北京市 海淀区 100190
2.中国科学院电工研究所, 北京市 海淀区 100190
3.中国科学院大学, 北京市 海淀区 100049
4.北京市太阳能热发电工程技术研究中心, 北京市 海淀区 100190
- 作者简介：
[ "徐立(1984), 男, 博士, 副研究员, 研究方向为太阳能集热器和吸热器性能、电子器件散热和电池热管理等, xuli1@mail.iee.ac.cn" ]
[ "孙飞虎(1980), 男, 博士, 助理研究员, 研究方向为太阳能定日镜跟踪质量诊断、定日镜场跟踪校正和聚光能流密度分布测量等, sunfeihu@mail.iee.ac.cn" ]
[ "李钧(1974), 男, 博士, 助理研究员, 研究方向为太阳能热发电及废物清洁处理等, lijun@mail.iee.ac.cn" ]
[ "张强强(1986), 男, 博士, 副研究员, 研究方向为太阳能吸热器性能评价和太阳能热化学等, zhangqiangqiang@mail.iee.ac.cn" ]
- 基金信息：国家重点研发计划项目(2018YFB0905102)
DOI：10.12096/j.2096-4528.pgt.21072
中图分类号： TK513.1收稿：2021-06-01，
纸质出版：2021-12-31
- 稿件说明：
移动端阅览
徐立, 孙飞虎, 李钧, 等. 流量对抛物面槽式太阳能集热器传热特性影响的实验分析[J]. 发电技术, 2021,42(6):665-672.
Li XU, Feihu SUN, Jun LI, et al. Experimental Analysis of the Influence of Flow Rate on Heat Transfer Characteristics of Parabolic Trough Solar Collector[J]. Power Generation Technology, 2021, 42(6): 665-672.
徐立, 孙飞虎, 李钧, 等. 流量对抛物面槽式太阳能集热器传热特性影响的实验分析[J]. 发电技术, 2021,42(6):665-672. DOI： 10.12096/j.2096-4528.pgt.21072.
Li XU, Feihu SUN, Jun LI, et al. Experimental Analysis of the Influence of Flow Rate on Heat Transfer Characteristics of Parabolic Trough Solar Collector[J]. Power Generation Technology, 2021, 42(6): 665-672. DOI： 10.12096/j.2096-4528.pgt.21072.
摘要
抛物面槽式太阳能集热器被广泛应用于中温太阳能工业热利用和高温太阳能热发电领域，然而太阳能间歇性的固有缺陷与供能系统期望的稳定连续运行相悖。通常通过调节流量使变太阳辐照条件下运行的槽式集热器提供相对稳定的有用能量输出，进而对其下游设备的稳定性起着关键作用。为了研究流量变化对集热器瞬态热行为的影响，通过人工调节造成流量的阶跃变化来开展实验，并且研究分析了在不同流量下的雷诺数、努塞尔数和传热流体对流换热系数。
Abstract
The parabolic trough solar collector is a commercialized and mature concentrating solar collector
which is widely used in the field of medium temperature solar industrial heat utilization and high temperature solar thermal power generation. However
the inherent drawback of solar energy is contrary to the stable and continuous operations expected by the energy supply system. Usually
adjusting the flow rate of the heat transfer fluid is a method to let the collector provide a relatively stable output under varying solar irradiation conditions
which plays a key role in the stability of its downstream equipments. In order to clarify how the change of flow rate affects the transient thermal behaviors of the collectors
this study carried out experiments with the step-change of the flow rate by the manual adjustment
and then carried out the analysis of Reynolds number
Nusselt number and the convective heat transfer coefficient of the heat transfer fluid with different flow rates.
关键词
Keywords
references
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