CFD based airflow uniformity optimization of Chinese solar greenhouses with long-row cultivation: Impact of unit layout design

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2025-07-01 Epub Date: 2025-04-27 DOI:10.1016/j.csite.2025.106192

Jiarui Lu , He Li , Chunling Wang , Xin Tian , Weitang Song , Shumei Zhao , Kelei Wang

{"title":"CFD based airflow uniformity optimization of Chinese solar greenhouses with long-row cultivation: Impact of unit layout design","authors":"Jiarui Lu , He Li , Chunling Wang , Xin Tian , Weitang Song , Shumei Zhao , Kelei Wang","doi":"10.1016/j.csite.2025.106192","DOIUrl":null,"url":null,"abstract":"<div><div>The inherent conflict between thermal insulation and optimal airflow distribution presents a critical challenge in Chinese solar greenhouses (CSGs) during winter production. This study develops an innovative computational fluid dynamics (CFD) prediction model to optimize fan-coil unit (FCU) installation parameters under long-row cultivation conditions, aiming to enhance airflow velocity and uniformity within crop canopies. Experimental validation confirmed the reliability of the numerical model across different crop height scenarios. The results demonstrated that for lower crop heights (1.0 m), the unit optimal interval and installation height were 1.5 m and 2.0 m, the optimal tilt and swing angles were 10° and 30°, respectively; while for higher crop heights (1.6 m), the unit optimal interval and installation height were all 2.0 m, the optimal swing angle was 10°. The airflow velocity and temperature distribution uniformity improved by 33.33 %, 24.07 % (1.0 m) and 23.05 %, 45.06 % (1.6 m), respectively. The proposed methodology provides actionable guidelines for FCU system design while establishing a theoretical basis for both environmental optimization and mechanization development in CSG operations.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106192"},"PeriodicalIF":6.4000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Case Studies in Thermal Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214157X25004526","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/27 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"THERMODYNAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

The inherent conflict between thermal insulation and optimal airflow distribution presents a critical challenge in Chinese solar greenhouses (CSGs) during winter production. This study develops an innovative computational fluid dynamics (CFD) prediction model to optimize fan-coil unit (FCU) installation parameters under long-row cultivation conditions, aiming to enhance airflow velocity and uniformity within crop canopies. Experimental validation confirmed the reliability of the numerical model across different crop height scenarios. The results demonstrated that for lower crop heights (1.0 m), the unit optimal interval and installation height were 1.5 m and 2.0 m, the optimal tilt and swing angles were 10° and 30°, respectively; while for higher crop heights (1.6 m), the unit optimal interval and installation height were all 2.0 m, the optimal swing angle was 10°. The airflow velocity and temperature distribution uniformity improved by 33.33 %, 24.07 % (1.0 m) and 23.05 %, 45.06 % (1.6 m), respectively. The proposed methodology provides actionable guidelines for FCU system design while establishing a theoretical basis for both environmental optimization and mechanization development in CSG operations.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

基于CFD的中国长行栽培日光温室气流均匀性优化：单元布置设计的影响

保温隔热与最佳气流分布之间的内在矛盾是我国温室冬季生产中面临的严峻挑战。本研究开发了一种创新的计算流体动力学（CFD）预测模型，用于优化长行栽培条件下风机盘管（FCU）安装参数，以提高作物冠层内的气流速度和均匀性。实验验证了数值模型在不同作物高度情景下的可靠性。结果表明：当作物高度较低（1.0 m）时，机组最佳间距为1.5 m，安装高度为2.0 m，最佳倾斜角度为10°，最佳摆动角度为30°；当作物高度较高（1.6 m）时，机组最佳间距和安装高度均为2.0 m，最佳摆角为10°。气流速度和温度分布均匀性分别提高了33.33%、24.07% （1.0 m）和23.05%、45.06% （1.6 m）。所提出的方法提供了可操作的FCU系统设计指南，同时为CSG操作中的环境优化和机械化发展建立了理论基础。

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

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.