抛物面槽式集热器温度分布的CFD模拟

IF 1.204 Q3 Energy
El Kouche Amal, El Ajouri Oumaima, Aroudam Elhassan
{"title":"抛物面槽式集热器温度分布的CFD模拟","authors":"El Kouche Amal,&nbsp;El Ajouri Oumaima,&nbsp;Aroudam Elhassan","doi":"10.3103/S0003701X23600303","DOIUrl":null,"url":null,"abstract":"<p>The aim of this paper is to assess the thermal performance of a parabolic trough collector where the thermophysical characteristics of the heat transfer fluid, the glass envelope, and the absorber pipe are temperature dependent for which we have created our own mathematical correlations. The structure of a parabolic trough collector consists of a reflecting mirror, a heat transfer fluid circulating in an absorber tube that is covered by a glass envelope. The studied model has been subjected to seasonal variations (solstices and equinoxes days) of solar radiation along with the concentrated heat flux reflected from the parabolic trough mirror for conditions at Tetouan city, Morocco. The amount of diffuse and beam solar radiation required has been modelled using the solar load model under Ansys Fluent software environment. The estimation of the heat transfer mechanism of our model has been done by solving Navier Stokes equations, also, the solar discrete ordinate model (DO) has been used to simulate radiation heat exchange on the receiver. The results have shown that the temperature of the heat collector element reaches its maximum values at equinoxes days compared to solstices days, also, it is found that the use of temperature-dependent properties enhances the thermal performance of the model by 1.4%.</p>","PeriodicalId":475,"journal":{"name":"Applied Solar Energy","volume":null,"pages":null},"PeriodicalIF":1.2040,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"CFD Simulation of Temperature Distribution in a Parabolic Trough Collector\",\"authors\":\"El Kouche Amal,&nbsp;El Ajouri Oumaima,&nbsp;Aroudam Elhassan\",\"doi\":\"10.3103/S0003701X23600303\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The aim of this paper is to assess the thermal performance of a parabolic trough collector where the thermophysical characteristics of the heat transfer fluid, the glass envelope, and the absorber pipe are temperature dependent for which we have created our own mathematical correlations. The structure of a parabolic trough collector consists of a reflecting mirror, a heat transfer fluid circulating in an absorber tube that is covered by a glass envelope. The studied model has been subjected to seasonal variations (solstices and equinoxes days) of solar radiation along with the concentrated heat flux reflected from the parabolic trough mirror for conditions at Tetouan city, Morocco. The amount of diffuse and beam solar radiation required has been modelled using the solar load model under Ansys Fluent software environment. The estimation of the heat transfer mechanism of our model has been done by solving Navier Stokes equations, also, the solar discrete ordinate model (DO) has been used to simulate radiation heat exchange on the receiver. The results have shown that the temperature of the heat collector element reaches its maximum values at equinoxes days compared to solstices days, also, it is found that the use of temperature-dependent properties enhances the thermal performance of the model by 1.4%.</p>\",\"PeriodicalId\":475,\"journal\":{\"name\":\"Applied Solar Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.2040,\"publicationDate\":\"2023-10-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Solar Energy\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S0003701X23600303\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"Energy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Solar Energy","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.3103/S0003701X23600303","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Energy","Score":null,"Total":0}
引用次数: 0

摘要

本文的目的是评估抛物面槽式集热器的热性能,其中传热流体、玻璃外壳和吸收管的热物理特性与温度有关,为此我们创建了自己的数学关联式。抛物面槽收集器的结构由反射镜、在玻璃外壳覆盖的吸收管中循环的传热流体组成。所研究的模型受到了太阳辐射的季节性变化(至点和分点日)以及从抛物槽反射镜反射的集中热通量的影响,这些变化适用于摩洛哥泰图安市的条件。在Ansys Fluent软件环境下,使用太阳能负荷模型对所需的散射和光束太阳辐射量进行了建模。通过求解Navier-Stokes方程对模型的传热机理进行了估计,并使用太阳离散纵坐标模型(DO)模拟了接收器上的辐射热交换。结果表明,与至日相比,集热元件的温度在分点达到最大值。此外,还发现使用与温度相关的特性将模型的热性能提高了1.4%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

CFD Simulation of Temperature Distribution in a Parabolic Trough Collector

CFD Simulation of Temperature Distribution in a Parabolic Trough Collector

The aim of this paper is to assess the thermal performance of a parabolic trough collector where the thermophysical characteristics of the heat transfer fluid, the glass envelope, and the absorber pipe are temperature dependent for which we have created our own mathematical correlations. The structure of a parabolic trough collector consists of a reflecting mirror, a heat transfer fluid circulating in an absorber tube that is covered by a glass envelope. The studied model has been subjected to seasonal variations (solstices and equinoxes days) of solar radiation along with the concentrated heat flux reflected from the parabolic trough mirror for conditions at Tetouan city, Morocco. The amount of diffuse and beam solar radiation required has been modelled using the solar load model under Ansys Fluent software environment. The estimation of the heat transfer mechanism of our model has been done by solving Navier Stokes equations, also, the solar discrete ordinate model (DO) has been used to simulate radiation heat exchange on the receiver. The results have shown that the temperature of the heat collector element reaches its maximum values at equinoxes days compared to solstices days, also, it is found that the use of temperature-dependent properties enhances the thermal performance of the model by 1.4%.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Applied Solar Energy
Applied Solar Energy Energy-Renewable Energy, Sustainability and the Environment
CiteScore
2.50
自引率
0.00%
发文量
0
期刊介绍: Applied Solar Energy  is an international peer reviewed journal covers various topics of research and development studies on solar energy conversion and use: photovoltaics, thermophotovoltaics, water heaters, passive solar heating systems, drying of agricultural production, water desalination, solar radiation condensers, operation of Big Solar Oven, combined use of solar energy and traditional energy sources, new semiconductors for solar cells and thermophotovoltaic system photocells, engines for autonomous solar stations.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信