基于Al2O3纳米流体的槽式太阳能热发电集热器传热建模及性能分析

doi:10.12096/j.2096-4528.pgt.19109

发电技术 ›› 2021, Vol. 42 ›› Issue (2): 230-237.DOI: 10.12096/j.2096-4528.pgt.19109

基于Al₂O₃纳米流体的槽式太阳能热发电集热器传热建模及性能分析

刘尧东¹(), 张燕平¹^,²^,*(), 万亮², 高伟¹

¹ 华中科技大学能源与动力工程学院, 湖北省武汉市 430074
² 华中科技大学中欧清洁与可再生能源学院, 湖北省武汉市 430074

收稿日期:2020-04-18 出版日期:2021-04-30 发布日期:2021-04-29
通讯作者: 张燕平
作者简介:刘尧东(1994), 男, 硕士研究生, 主要研究方向为太阳能集热器传热性能的优化, 1208825378@qq.com
基金资助:
国家国际科技合作专项项目(2014DFA60990)

Heat Transfer Modelling and Performance Analysis of Trough Solar Thermal Power Collector Based on Al₂O₃ Nanofluid

Yaodong LIU¹(), Yanping ZHANG¹^,²^,*(), Liang WAN², Wei GAO¹

¹ School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei Province, China
² China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, Hubei Province, China

Received:2020-04-18 Published:2021-04-30 Online:2021-04-29
Contact: Yanping ZHANG
Supported by:
National Special Project of International Scientific and Technological Cooperation(2014DFA60990)

摘要/Abstract

摘要：

基于计算流体动力学中的有限体积法，研究了Al₂O₃/Syltherm800导热油纳米流体作为传热介质时槽式太阳能热发电集热器的性能，建立了真空管集热器的三维模型，进行了光学模拟和传热数值模拟，并通过实验进行了验证。在非均匀热流密度分布的情况下，研究了进口温度、进口流速等运行参数对采用纳米流体的槽式集热器传热性能的影响规律。结果表明：随着Al₂O₃体积分数的增加，槽式集热器的换热性能及热效率均有所提高；进口温度、进口流速等运行参数对集热器的传热性能影响很大，随着进口温度的上升和进口流速的减小，纳米流体对传热性能的影响程度逐渐增大。

关键词: 太阳能热发电, 槽式集热器, 纳米流体, 传热性能

Abstract:

Based on the finite volume method in computational fluid dynamics, the performance of the trough solar thermal power collector with Al₂O₃/Syltherm800 oil nanofluid as heat transfer fluid was studied. A three-dimension model of the vacuum collector was established, optical simulation and heat transfer numerical simulation were carried out and verified by experiments. Under the condition of non-uniform heat flux distribution, the influence of inlet temperature and inlet velocity on the heat transfer performance of the trough collector with nanofluid was studied. The simulation results show that the heat transfer performance and heat efficiency of the trough collector are improved with the increase of Al₂O₃ volume fraction. The heat transfer performance of the collector is greatly influenced by the inlet temperature and the inlet velocity. With the increase of inlet temperature and the decrease of inlet velocity, the influence of the nanofluid on the heat transfer performance increases gradually.

Key words: solar thermal power generation, trough collector, nanofluid, heat transfer performance

中图分类号:

TK519

刘尧东, 张燕平, 万亮, 高伟. 基于Al₂O₃纳米流体的槽式太阳能热发电集热器传热建模及性能分析[J]. 发电技术, 2021, 42(2): 230-237.

Yaodong LIU, Yanping ZHANG, Liang WAN, Wei GAO. Heat Transfer Modelling and Performance Analysis of Trough Solar Thermal Power Collector Based on Al₂O₃ Nanofluid[J]. Power Generation Technology, 2021, 42(2): 230-237.

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基于Al₂O₃纳米流体的槽式太阳能热发电集热器传热建模及性能分析

Heat Transfer Modelling and Performance Analysis of Trough Solar Thermal Power Collector Based on Al₂O₃ Nanofluid

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