摘要
植物工厂是当前可控农业环境的最高形式之一,但植物工厂内温度、气流空间分布不均,不同栽培架之间存在一定温差、气流速度差。为解决气流植物工厂内局部环境因子差异大的问题,该研究对植物工厂进风口设置进行改进,在侧进上出气流循环模式下,借鉴均流板原理设计了一款全网孔通风墙型植物工厂,并通过计算流体力学软件(computational fluid dynamics,CFD)进行模拟,分析该类型工厂下温度、气流速度、CO_(2)浓度、相对湿度、适宜风速占比、空气龄、指定流线速度变化情况,以评价全网孔通风墙对植物工厂内局部环境差异的改进效果。该设计平均空气龄为7.5 s,是无全网孔通风墙条件下的1/9,空气更新效率有效提升。研究表明全网孔通风墙型植物工厂能有效提升植物工厂内环境因子分布均匀性。
The plant factory realizes environmental control and plant growth prediction by integrating environmental data,monitoring plant growth conditions,utilizing computers to make dynamic adjustments,and ultimately carrying out environmental control to realize the planned annual production of plants.However,its internal temperature and airflow space distribution are uneven between the two sides and the middle cultivation shelf,the same row of cultivation shelves between the different layers of shelves has a certain temperature and airflow speed difference.Airflow velocity is related to the position of the air inlet,within the direct radiation range of the air inlet,the airflow flow is intense,the airflow velocity is large,and the air exchange efficiency is high;while not in the direct radiation range of the air inlet area,the airflow flow is slow,the velocity is small,and the air exchange efficiency is low.Traditional plant factories have large differences in environmental factors,resulting in poor plant growth consistency.Therefore,the air inlet setting is the key to solving the problem of large differences in local environmental factors within the airflow plant factory.At present,most studies on airflow circulation patterns inside plant factories take the position,number,and angle of air inlets and outlets as the entry points.The effect of airflow circulation in plant factories is significantly affected by the internal structure,and it is worthwhile to study whether it is possible to improve the uniformity and stability of the distribution of environmental factors in plant factories by optimizing the airflow circulation mode and improving the internal structure.In this study,we improved the setting of the air inlet of the plant factory,designed a plant factory with a full mesh ventilating wall under the air circulation mode of side inlet and top outlet,compared the uniformity of the distribution of the environmental factors in the plant factory with and without the full mesh ventilating wall,which was simulated by co
作者
王晋伟
陈竞楠
韩冬
林志远
黄晨馨
郑书河
钟凤林
侯毛毛
WANG Jinwei;CHEN Jingnan;HAN Dong;LIN Zhiyuan;HUANG Chenxin;ZHENG Shuhe;ZHONG Fenglin;HOU Maomao(College of Horticulture,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Fujian Vocational College of Agricultural,Fuzhou 350119,China;Juhuang Group Co.,Ltd.,Xiamen 361021,China;Dezhou University,Dezhou 416012,China;College of Mechanical and Electrical Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,China)
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2023年第13期213-221,共9页
Transactions of the Chinese Society of Agricultural Engineering
基金
福建省自然科学基金面上项目(2023J01133579)
福建省科协“德化淮山科技小院”(202203)。
关键词
通风
温度
墙
植物工厂
均流板
送风系统
ventilation
temperature
walls
plant factory
average flow plate
air supply system
