Distribution and optimization of solar radiation in a solar greenhouse under the influence of wall shading

IF 6 2区 工程技术 Q2 ENERGY & FUELS Solar Energy Pub Date : 2024-10-31 DOI:10.1016/j.solener.2024.113034
Lianhua Deng, Angui Li, Jigang Che
{"title":"Distribution and optimization of solar radiation in a solar greenhouse under the influence of wall shading","authors":"Lianhua Deng,&nbsp;Angui Li,&nbsp;Jigang Che","doi":"10.1016/j.solener.2024.113034","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, an indoor solar radiation calculation model was established to investigate the horizontal beam and diffuse radiation distributions in a solar greenhouse and their optimization under the influence of wall shading. According to the model calculation results, both the indoor horizontal beam and diffuse radiation were influenced by greenhouse wall shading. The closer the location was to the corner, the lower the received global solar radiation on a horizontal surface. From 08:00 to 16:00 in winter, the position of the solar energy maximum on the greenhouse ground surface gradually moved from southwest to southeast. Then, the concept of the solar radiation utilization efficiency was proposed to explain the indoor horizontal solar radiation distribution differences between the span and length directions. Finally, the horizontal solar radiation variation was studied via dimensionless analysis of greenhouse building parameters. A sloped soil surface was proposed to improve global solar radiation received by the soil surface. On the basis of the dimensionless analysis results, when the length-height ratio was less than 4, ranged from 4 to 10, or greater than 10, there was an obvious shade effect, a weak shade effect, or a negligible shade effect, respectively. At soil slopes of 2.5°, 5°, 7.5°, and 10°, the hourly mean value of the total solar radiation on the soil surface from 08:00 to 16:00 increased by 6 %, 11 %, 15 %, and 20 %, respectively, compared with the original value.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"284 ","pages":"Article 113034"},"PeriodicalIF":6.0000,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solar Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038092X24007291","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0

Abstract

In this study, an indoor solar radiation calculation model was established to investigate the horizontal beam and diffuse radiation distributions in a solar greenhouse and their optimization under the influence of wall shading. According to the model calculation results, both the indoor horizontal beam and diffuse radiation were influenced by greenhouse wall shading. The closer the location was to the corner, the lower the received global solar radiation on a horizontal surface. From 08:00 to 16:00 in winter, the position of the solar energy maximum on the greenhouse ground surface gradually moved from southwest to southeast. Then, the concept of the solar radiation utilization efficiency was proposed to explain the indoor horizontal solar radiation distribution differences between the span and length directions. Finally, the horizontal solar radiation variation was studied via dimensionless analysis of greenhouse building parameters. A sloped soil surface was proposed to improve global solar radiation received by the soil surface. On the basis of the dimensionless analysis results, when the length-height ratio was less than 4, ranged from 4 to 10, or greater than 10, there was an obvious shade effect, a weak shade effect, or a negligible shade effect, respectively. At soil slopes of 2.5°, 5°, 7.5°, and 10°, the hourly mean value of the total solar radiation on the soil surface from 08:00 to 16:00 increased by 6 %, 11 %, 15 %, and 20 %, respectively, compared with the original value.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
墙体遮阳影响下日光温室的太阳辐射分布与优化
本研究建立了一个室内太阳辐射计算模型,以研究日光温室的水平辐射束和漫射辐射分布及其在墙体遮阳影响下的优化。根据模型计算结果,室内水平光束和漫射辐射都受到温室墙体遮阳的影响。位置越靠近墙角,水平面上接收到的全球太阳辐射就越低。从冬季的 8:00 到 16:00,温室地面上的太阳能最大值位置逐渐从西南向东南移动。然后,提出了太阳辐射利用效率的概念来解释室内水平太阳辐射在跨度和长度方向上的分布差异。最后,通过对温室建筑参数的无量纲分析,研究了水平太阳辐射的变化。提出了一种倾斜的土壤表面,以改善土壤表面接收到的全球太阳辐射。根据无量纲分析结果,当长高比小于 4、在 4 至 10 之间或大于 10 时,分别存在明显的遮阳效应、微弱的遮阳效应或可忽略不计的遮阳效应。当土壤坡度为 2.5°、5°、7.5° 和 10°时,8:00 至 16:00 土壤表面的太阳辐射总量的小时平均值分别比原始值增加了 6%、11%、15% 和 20%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Solar Energy
Solar Energy 工程技术-能源与燃料
CiteScore
13.90
自引率
9.00%
发文量
0
审稿时长
47 days
期刊介绍: Solar Energy welcomes manuscripts presenting information not previously published in journals on any aspect of solar energy research, development, application, measurement or policy. The term "solar energy" in this context includes the indirect uses such as wind energy and biomass
期刊最新文献
Photovoltaic functionality assessment of InPBi-based solar cells using a combination of density functional theory and finite element method analysis The role of masking and aperture size for accurate measurement of performance parameters of DSSCs On the closure relationship among shortwave radiometric measurements under a cold climate during winter Performance evaluation of indirect solar drying system for potato slices: Comparative analysis with open-sun drying method The future of photovoltaic energy potential in Africa under higher emission scenarios: Insights from CMIP6 multi-model ensemble analysis
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1