CPC 集热器冷却通道结构优化及换热流动数值模拟

doi:10.11930/j.issn.1004-9649.202210093

中国电力 ›› 2023, Vol. 56 ›› Issue (9): 206-214.DOI: 10.11930/j.issn.1004-9649.202210093

CPC 集热器冷却通道结构优化及换热流动数值模拟

耿直^1,2,3, 鲁向武¹, 王剑利², 石天庆², 常绪成¹, 顾煜炯⁴

1. 郑州航空工业管理学院航空发动机学院，河南郑州 450046;
2. 华电郑州机械设计研究院有限公司，河南郑州 450046;
3. 清华大学能源与动力工程系，北京 100084;
4. 华北电力大学国家火力发电工程技术研究中心，北京 102206

收稿日期:2022-10-24 修回日期:2023-07-15 发布日期:2023-09-20
作者简介:耿直(1991-),男,博士(后),讲师,从事清洁可再生能源高效转换与利用研究,E-mail:zhgz@zua.edu.cn;顾煜炯(1968-),男,通信作者,博士,教授,从事新能源利用技术、电站设备状态监测与维修等研究,E-mail:gyj@ncepu.edu.cn
基金资助:
国家自然科学基金资助项目（51975539）；河南省青年人才托举工程资助项目（2022HYTP021）；河南省住房城乡建设科技计划资助项目（HNJS-2022-K57）。

Optimization of Cooling Channel Structure and Numerical Simulation of Heat Transfer with Flow for CPC Collector

GENG Zhi^1,2,3, LU Xiangwu¹, WANG Jianli², SHI Tianqing², CHANG Xucheng¹, GU Yujiong⁴

1. School of Aero Engine, Zhengzhou University of Aeronautics, Zhengzhou 450046, China;
2. Huadian Zhengzhou Mechanical Design Institute Company Limited, Zhengzhou 450046, China;
3. Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China;
4. National Thermal Power Engineering & Technology Research Center, North China Electric Power University, Beijing 102206, China

Received:2022-10-24 Revised:2023-07-15 Published:2023-09-20
Supported by:
This work is supported by National Natural Science Foundation of China (No.51975539); Young Elite Scientists Sponsorship Program by Henan Association for Science and Technology (No.2022HYTP021); Henan Housing Urban-Rural Development Science and Technology Program (No.HNJS-2022-K57).

摘要/Abstract

摘要： 利用复合抛物面聚光集热器实现光伏与光热一体化应用，是太阳能综合利用的一种有效方式。针对光伏构件表面降温的核心问题，分别从进口截面优化和冷却流道布局2个角度进行了理论仿真，提出了矩形、半圆形和梯形内管3种不同形状的进口截面方案。结合控制方程，利用Fluent软件模拟了各流道内部温度场、速度场等传热流动分布规律。研究表明，当质量流量较小时，矩形截面综合性能较好；当质量流量较大时，半圆形截面综合性能较优。在此基础上，提出传统直管和新型弯管2种不同构件的冷却通道方式，并对比探究了不同进口截面通道的换热流动特性及系统热、电㶲效率。结果表明，在相同边界条件下，新型弯管的综合换热性能优于传统直管。

关键词: 太阳能, CPC 集热器, 光伏光热一体化, 强化换热, 结构优化, 性能分析

Abstract: It is an effective way of comprehensive utilization of solar energy to realize the integrated application of photovoltaic and photothermal by using compound parabolic concentrator. Aiming at the core problem of surface cooling of photovoltaic components, this paper conducted theoretical simulation from the perspectives of cooling channel layout and inlet section optimization. Two different cooling channel modes of traditional straight pipe and new serpentine elbow were proposed. Combined with the control equation, the temperature field and velocity field in each channel were simulated by using Fluent software. The results showed that under the same boundary conditions, the comprehensive heat transfer performance of coiled tubes was better than that of traditional straight tubes. On this basis, three kinds of inlet section schemes with different shapes, namely, rectangular, semicircular and trapezoidal inner tubes, were proposed, and the heat transfer flow characteristics of channels with different inlet sections and the thermoelectric efficiency of the system were compared. The results showed that the comprehensive performance of rectangular section was better when the mass flow rate was small. While when the mass flow rate was large, the semicircular section was better.

Key words: solar energy, CPC collector, photovoltaic-photothermal integration, heat transfer enhancement, structural optimization, performance analysis

耿直, 鲁向武, 王剑利, 石天庆, 常绪成, 顾煜炯. CPC 集热器冷却通道结构优化及换热流动数值模拟[J]. 中国电力, 2023, 56(9): 206-214.

GENG Zhi, LU Xiangwu, WANG Jianli, SHI Tianqing, CHANG Xucheng, GU Yujiong. Optimization of Cooling Channel Structure and Numerical Simulation of Heat Transfer with Flow for CPC Collector[J]. Electric Power, 2023, 56(9): 206-214.

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CPC 集热器冷却通道结构优化及换热流动数值模拟

Optimization of Cooling Channel Structure and Numerical Simulation of Heat Transfer with Flow for CPC Collector

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CPC 集热器冷却通道结构优化及换热流动数值模拟

Optimization of Cooling Channel Structure and Numerical Simulation of Heat Transfer with Flow for CPC Collector

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