摘要
气流组织是影响屏障环境实验动物设施流场的一个重要因素,本文以某屏障环境小鼠饲养室为例,用Airpak软件模拟排风口位置、数量、尺寸以及笼具位置对室内流场的影响。模拟结果表明:房间排风口的数量和位置对小鼠饲养室整体的平均温度、平均风速、平均空气龄以及均方根偏差影响较小,主要影响局部气流分布;笼具沿房间宽度方向布置的平均空气龄比笼具沿房间长度方向布置平均少25 s。此外,计算分析夏季空调新风冷负荷指标和换气次数呈现一次函数关系,新风冷负荷占总冷负荷比例达92.25%。相对于开放式笼具系统,独立通气笼具系统新风冷负荷指标降低62.6%。
Air distribution is an important factor affecting the flow field of a laboratory animal room in a barrier environment.We studied a mouse breeding room in a barrier environment as an example,using Airpak software to simulate the effect of the position,number and size of exhaust outlets,as well as the cage position,on the indoor flow field.The simulation result showed that the number and location of exhaust outlets mainly affected the local air distribution,and had little effect on the average temperature,air speed,air age and mean square deviation of the entire mouse feeding room.The average age of air particles in cages arranged along the width direction of the room was 25 s shorter than that in cages arranged along the length direction of the room.Additionally,there was a linear function relationship between the fresh air cooling load index during summer air conditioning and the number of air changes,with the fresh air cooling load accounting for 92.25%of the total cooling load.Compared with the open cage system,the fresh air cooling load index of the independent ventilation cage system was reduced by 62.6%.
作者
钟加晨
王志毅
吴强
ZHONG Jiachen;WANG Zhiyi;WU Qiang(Zhejiang Sci-Tech University,Hangzhou 310018,China;Jiangsu Sujing Group,Suzhou 215122)
出处
《中国比较医学杂志》
CAS
北大核心
2021年第3期104-110,共7页
Chinese Journal of Comparative Medicine
基金
浙江省自然科学基金(LY18E060008)。
关键词
实验动物
气流组织
数值模拟
节能
laboratory animal
air distribution
numerical simulation
energy saving
