基于能质平衡的密闭猪舍内小气候环境模拟与验证  

Simulation and verification of microclimate environment in closed swine house based on energy and mass balance

作　　者：谢秋菊[1,2,3] Ji-Qin Ni 包军 刘洪贵[2] Xie Qiuju;Bao Jun;Liu Honggui(Key Laboratory of Swine Facilities Engineering,Ministry of Agriculture P.R.China,Northeast Agricultural University Harbin 150030,China;College of Animal Science and Technology,Northeast Agricultural University,Harbin 150030,China;College of Electricaland Information,Heilongjiang Bayi Agricultural University,Daqing 163319,China)

机构地区：[1]东北农业大学农业部生猪养殖设施工程重点实验室,哈尔滨150030 [2]东北农业大学动物科学技术学院,哈尔滨150030 [3]黑龙江八一农垦大学电气与信息学院,大庆163319 [4]Department of Agricultural and Biological Engineering, Purdue University,West Lafayette,IN 47907,USA

出　　处：《农业工程学报》2019年第10期148-156,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：东北农业大学农业部生猪养殖设施工程重点实验室开放课题;国家生猪产业技术体系(CARS-35);黑龙江省青年科学基金项目(QC2013C065);黑龙江八一农垦大学学成、引进人才科研启动基金(XDB-2016-21)

摘　　要：良好的猪舍内小气候可以显著提高猪的生长性能和健康水平,然而由于猪舍内小气候受地域、季节、饲养数量等因素影响,难以实现可靠的预测及控制。该文基于能量及质量平衡方程,建立热量、湿度交换模型,以实际监测数据为基础,利用多元非线性回归方法(multiple nonlinear regression method)确定模型中的部分参数,建立适用于北方夏季密闭式猪舍环境模拟模型。对夏季北向背阴面和南向朝阳面的2个猪舍内温度及湿度进行模拟及验证,结果表明,南北2个朝向的猪舍内温度、湿度模拟与实测值变化趋势一致,温度最大误差为2.4℃,最大相对误差为9.2%,决定系数分别为0.836 9和0.786 9;舍内相对湿度最大误差为13.34%,最大相对误差为49.66%,决定系数分别为0.912和0.899 7。研究结果可为密闭式猪舍内环境调控及能量需求提供参考。Microclimate of swine house is a time-varying and nonlinear system affected by the interaction of internal production and external environment factors,and has an important effect on the pig’s growth performance and health status.Among multiple environmental factors,indoor air temperature affects the heat balance of the pig body and plays an important role to maintain the constant body temperature.Humidity influences the evaporation of the pig body and therefore a body’s thermoregulation.So,the indoor temperature and humidity are payed much attention by many researchers in the past decades in order to maintain a suitable indoor environment for pigs.Simulation of indoor microclimate is an effective way to provide a precision control strategy.Some researches on swine house environment control are conducted based on indoor air temperature and ventilation using traditional and automatic control method.However,in practice,it is difficult to realize an accurate microclimate control and prediction in a swine house due to some influences such as different regions that swine house located,seasons,raised number of pigs,and most simulations and models for swine house environment only focused on single environment factor such as temperature,humidity or airflow using computational fluid dynamics(CFD),the comprehensive interaction among the multiple factors and the energy consumptions are neglected.In this study,a thermal exchange model based on energy balance equations and a humidity variation model based on mass balance equations are developed for a closed swine house,the factors such as weather,heat dissipation,heat acquisition,building structure,building ventilation and pigs in the swine house are considered.Based on the one month’s measured data of 1 minute resolution of room 2 on the south side and room 11 on the northwest corner in the swine house,some parameters of the simulation model were determined by using multivariate non-linear regression model(MNRM).Two days measured data are randomly selected to validate t

关 键 词：环境控制 温度 湿度 密闭式猪舍 能量平衡 热量交换 

分 类 号：S2[农业科学—农业工程]