规模化保育猪舍自然通风对猪仔生长环境及健康的影响研究  

Effects of Natural Ventilation on the Growth Environment and Health of Piglets in Large-scale Nursery Piggery

作　　者：刘晨晨 鲁祥友[1] 张虎[1] 苏文博 舒云祥 LIU Chen-chen;LU Xiang-you;ZHANG Hu(School of Environment and Energy,Anhui Jianzhu University,Hefei,Anhui 230601)

机构地区：[1]安徽建筑大学环境与能源学院,安徽合肥230601

出　　处：《安徽农业科学》2022年第11期198-202,共5页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目:(51606002);安徽省高校自然科学研究项目(KJ2019A0755);安徽建筑大学自然科学研究项目(JY16-3-184)。

摘　　要：以农村地区的保育舍为研究对象,运用计算流体力学(CFD)模拟技术对冬季采用横向自然通风的保育舍进行速度场、温度场和颗粒物分布的模拟分析,研究同种通风方式下不同窗户开度猪舍内部的环境质量,并提出优化建议。模拟结果显示:横向自然通风猪舍气流死区较多,但仔猪周围小部分区域的温度和风速值并不能满足国标的要求,影响部分猪只正常的生长发育;对于大跨度的横向自然通风,窗户开度影响颗粒物的排出效果。窗户开度增大,颗粒物的排出效果虽有提升但并不明显,同时也加剧了颗粒物向相邻区域的扩散,最终大部分颗粒物在热升力作用下分布在屋顶周围。该研究结果为夏热冬冷地区冬季自然通风猪舍的结构设计和气流组织优化提供了理论指导。Taking nursery piggery in rural areas as research object,CFD simulation technology was used to simulate and analyze the velocity field,temperature field and particulate matter distribution of nursery piggery with transverse natural ventilation in winter.The environmental quality inside pig houses with different window openings under the same ventilation mode was studied,and some optimization suggestions were proposed.The simulation results showed that there were more areas with no air circulation under transverse natural ventilation,and the temperature and wind speed values in a small area around the piglets did not meet the requirements of the national standards,which affected the normal growth and development of some pigs.For large-span transverse natural ventilation,the size of the window opening affected the discharge effect of particulate matters.When the window opening was increased,the discharge effect of particulate matter was improved but it was not obvious.It also intensified the diffusion of particulate matters to the adjacent area.Finally,most particles were distributed around the roof under the action of thermal lift.This study provided theoretical guidance for the structural design and air distribution optimization of piggery with natural ventilation in winter in the areas with hot summer and cold winter.

关 键 词：保育猪舍 CFD模拟 横向自然通风 颗粒物 窗户开度 

分 类 号：TU264.3[建筑科学—建筑设计及理论]