[1]任晓帅,王登甲,刘艳峰,等.真空管太阳能空气集热系统阻力特性实验研究[J].西安建筑科技大学学报(自然科学版),2022,(01):142-148.[doi:10.15986/j.1006-7930.2022.01.018 ]
 REN Xiaoshuai,WANG Dengjia,LIU Yanfeng,et al.Experimental study on resistance characteristics of evacuated tube solar air heating system[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2022,(01):142-148.[doi:10.15986/j.1006-7930.2022.01.018 ]
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真空管太阳能空气集热系统阻力特性实验研究()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
期数:
2022年01期
页码:
142-148
栏目:
出版日期:
2022-02-28

文章信息/Info

Title:
Experimental study on resistance characteristics of evacuated tube solar air heating system
文章编号:
1006-7930(2022)01-0142-07
作者:
任晓帅23王登甲12刘艳峰12丁 奎2
(1.西部绿色建筑国家重点实验室,陕西 西安 710055; 2.西安建筑科技大学 建筑设备科学与工程学院,陕西 西安 710055; 3.中冶京诚工程技术有限公司,北京 102600)
Author(s):
REN Xiaoshuai23WANG Dengjia12LIU Yanfeng12DING Kui2
(1.State Key Laboratory of Green Building in Western China,Xi'an 710055,China; 2.School of Building Services Science and Engineering, Xi'an Univ. of Arch. & Tech., Xi'an 710055,China; 3.Capital Engineering & Research Incorporation Limited,Beijing 102600,China)
关键词:
太阳能 空气集热器 阻力特性 设计参数
Keywords:
solar energy solar air collector resistance characteristic design parameter
分类号:
TU83
DOI:
10.15986/j.1006-7930.2022.01.018
文献标志码:
A
摘要:
通过理论分析明确了真空管太阳能空气集热系统中集热器、管道以及局部构件阻力影响因素,进而利用实验手段,研究了不同太阳辐射强度、集热工质温度,质量流量作用下,真空管太阳能空气集热器、输配管道及弯头阻力变化规律,结果表明,稳定状态下,空气集热器压降随太阳辐射强度增大呈正向增大趋势,集热器阻抗系数与压降有相似变化趋势; 而管道当量局部阻力系数与弯头局部阻力系数随流体温度升高呈对数增长趋势.对集热系统阻力单位化后发现,集热器压降占系统总压降比例约为86%~93%,输配系统(单位管长、单个局部弯头)约占7%~14%.归纳给出系统阻力简化计算式,可计算不同组真空管太阳能空气集热器、不同输配长度条件下的阻力.
Abstract:
Through theoretical analysis, the influencing factors of collector, pipeline and local component resistance in evacuated tube solar air collector system were clarified. Then, by means of experiments, the variation laws of collector, transmission and distribution pipeline and elbow resistance under different solar radiation intensities, collector working fluid temperatures and mass flow rates were studied. The results showed that under stable conditions, the pressure drop of air collector increased positively with the increase of solar radiation intensity, and the impedance coefficient of collector had a similar trend with the pressure drop, while the equivalent local resistance coefficient of the pipeline and the local resistance coefficient of the elbow increases logarithmically with the increase of fluid temperature. After unitizing the resistance of the collector system, it was found that the collector pressure drop accounted for about 86%~93% of the total pressure drop of the system, and the transmission and distribution system(unit pipe length, single local elbow)accounted for about 7%~14%. The simplified calculation formula of system resistance was summarized, which could calculate the resistance of solar air collectors with different groups of evacuated tubes and different transmission and distribution lengths.

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备注/Memo

备注/Memo:
收稿日期:2021-04-03修改稿日期:2022-01-20
基金项目:国家自然科学基金面上项目(51676468,51878532); 陕西省杰出青年基金项目(2020JC-43)
第一作者:任晓帅(1995-),男,硕士,主要研究方向为太阳能供暖与建筑热环境.E-mail:rxs13293375591@163.com 通信作者:王登甲(1984-),男,教授,博士生导师,主要研究方向为太阳能供暖与建筑热环境.E-mail:wangdengjia@xauat.edu.cn

更新日期/Last Update: 2022-02-20