基于规模化保育猪舍的全新风通风负荷计算模型及测试分析  

A calculation method and test analysis research of all fresh air ventilation load based on large-scale nursery piggery

作　　者：汪斌 胡志儒 杨奇志 王勇 王金勇[2] WANG Bin;HU Zhiru;YANG Qizhi;WANG Yong;WANG Jinyong(School of Civil Engineering,Chongqing University,Chongqing 400044,China;Chongqing Academy of Animal Sciences,Chongqing 402460,China)

机构地区：[1]重庆大学土木工程学院,重庆400044 [2]重庆市畜牧科学院,重庆402460

出　　处：《中国科学院大学学报（中英文）》2024年第4期566-576,共11页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(51576023)资助。

摘　　要：猪舍的全新风通风不仅能提升猪舍环境质量,还能降低规模化养殖中的交叉感染问题。以保育猪为研究对象,建立了全新风通风负荷计算模型,应用该模型与传统逐时逐项冷负荷方法计算的负荷结果差异小于5%,可应用于工程简化计算。在该模型基础上,提出耦合不同室外气象参数下的猪舍环控参数动态调控方法。通过试验验证,该调控策略下舍内温度测试值与理论值平均相对误差为3.4%,且能够满足夏季猪舍温度、风速控制值及均匀性要求。在冬季运行工况下应用该调控方法,每栏仅需150 m^(3)/h风量即可满足舍内空气质量要求;理论送风参数下,测得舍内空气平均温度约26℃,日平均温差5℃,CO_(2)、NH_(3)、PM_(2.5)等污染物浓度均远低于国家标准指标。该负荷计算模型及动态调控方法可为规模化保育猪舍的热环境与卫生环境研究提供参考。In order to solve the problems of high energy consumption,challenging load calculation and cross-infection caused by traditional ventilation environmental control method of piggery,this paper takes nursery pigs as the research object and establishes the load calculation model of all fresh air ventilation.The difference in load calculation results between this model and the traditional time-by-time cold load method is less than 5%,which can be applied to simplify the calculation of engineering.Based on the model,the dynamic regulation method of piggery environmental control parameters,considering different outdoor meteorological conditions,is proposed.Experimental results show that,the average relative error between the measured and theoretical values of the piggery temperature under its regulation strategy is 3.4%,and it meets the requirements of temperature,wind speed control value,and uniformity of the summer piggery.When the regulation method is applied to winter operating conditions,only 150 m^(3)/h air volume per pen is required to meet the air quality requirements in the piggery.Under theoretical air supply parameters,the average air temperature in the piggery is measured to be about 26℃,the average daily temperature difference is 5℃,and the concentration of pollutants such as CO_(2),NH_(3),and PM_(2.5) are far below the national standard limits.The load calculation model and dynamic regulation method can provide reference for the research of thermal and sanitary environment in large-scale nursery piggery.

关 键 词：全新风 规模化保育猪舍 湿度控制 温度场 污染物 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]