灌溉排水学报2024，Vol.43Issue(4)：90-95,104,7.DOI:10.13522/j.cnki.ggps.2023421
尖顶宽度对Venlo型温室微气候的影响
The effect of spire width on microclimate within Venlo-type greenhouses
摘要
Abstract
[Objective]The Venlo-type greenhouse is commonly used in commercial horticulture due to its efficient space utilization and superior light transmission.This study investigates the impact of spire width on microclimate within such greenhouses under natural ventilation conditions.[Method]The study focused on multi-span glass greenhouses.We used experimental measurement and CFD modelling to simulate the variations in temperature and airflow in the greenhouse for various spire widths:3.2 m JD3.2,3.6 m JD3.6 and 4 m JD4 under natural ventilation conditions when the outdoor wind speed was 0 and 1 m/s,respectively.[Result]① Comparing with measured temperature at different sampling points in the greenhouse reveals that the relative error of the simulated temperature ranged from 0.2%to 3.3%,② Spire width had a significant effect on temperature distribution in the greenhouse.In particular,temperature increased upward in the greenhouses with the JD3.2 spire,while,in contrast,temperature increased downward in the greenhouses with the JD3.6 spire.③ Regardless of the outdoor wind speed,greenhouses with JD3.2 spire had the best heat removal efficiency.The heat removal efficiency of JD3.6 and JD4 spire and the associated temperature distribution in the greenhouses was better when the outdoor speed was 0 m/s than when the outdoor wind speed was 1 m/s.[Conclusion]For all spire widths we compared under different working conditions,the greenhouse with JD3.2 spire work best for ventilating and cooling the greenhouse.关键词
Venlo型温室/尖顶宽度/自然通风/数值计算Key words
venlo type greenhouse/spire width/natural ventilation/numeral calculations分类
农业科技引用本文复制引用
高振军,郗笑,李浩,李苇,丁小明,张晨骏..尖顶宽度对Venlo型温室微气候的影响[J].灌溉排水学报,2024,43(4):90-95,104,7.基金项目
"十三五"国家重点研发计划(2017YFD0701500) （2017YFD0701500）
农业农村部农业设施结构工程重点实验室开放课题(201903) （201903）
河南省重点研发与推广专项(科技攻关)项目(232102110286) （科技攻关）
