摘要
采用光学-动力学耦合的方法,建立槽式太阳能真空管接收器的三维流动、传热模型,分析影响集热系统热效率和效率的因素。为验证模拟结果准确性,与文献试验结果进行对比,吻合较好,平均误差为9.4%。模拟结果显示,传热流体入口温度、环形区域压力对集热系统热效率和效率的影响最显著,间隙尺寸的影响次之,传热流体质量流速的影响最小。
Energy and exergy analysis is the best thermodynamic method to study the parabolic trough collector systems.With the method,the performance of the collector systems can be evaluated effectively and optimized. In this paper,a three-dimensional flow and heat transfer model of the parabolic trough collector’s linear receiver was established by using the optical and dynamic coupling method,and the impacts of the thermal and exergy efficiency of the collector system were analyzed. To verify the validity of the proposed model,the simulated results were compared with the experimental data in the literatures. Satisfactory agreement is good,and the average deviation is about 9.4%. The simulation results showed that the thermal and exergy efficiency of the collector system were most affected by the inlet temperature of the heat transfer fluid and the annulus pressure,followed by the annulus gap size,and the mass flow rate had the least influence.
作者
张维蔚
巴旭阳
薛奇成
高虹
史志国
田瑞
Zhang Weiwei;Ba Xuyang;Xue Qicheng;Gao Hong;Shi Zhiguo;Tian Rui(College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Key Laboratory of Wind Energy and Solar Energy Technology(Inner Mongolia University of Technology),Ministry of Education,Hohhot 010051,China;Beijing Key Laboratory of Powertrain for New Energy Vehicle,School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China;Key Laboratory of Renewable Energy,Inner Mongolia Autonomous Region,Hohhot 010051,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第8期2251-2257,共7页
Acta Energiae Solaris Sinica
基金
风能太阳能利用技术教育部重点实验室开放基金(2017MS05)
内蒙古自治区高等学校科学研究项目(NJZZ19070)
2017-2018年研究生教育教学改革项目(YJG2017017)
内蒙古自然基金(2016MS0537)
关键词
真空管接收器
热效率
效率
环形区域
间隙尺寸
linear receiver
thermal efficiency
exergy efficiency
annulus space
annulus gap size
