北方地区鸡舍中气流组织分布的研究

发布时间：2018-07-01 11:35

本文选题：鸡舍 + 横向通风　；参考：《沈阳建筑大学》2013年硕士论文

【摘要】：随着生活水平的不断提高,现阶段人们对禽产品质量的要求越来越高。而近年来养鸡业的发展速度较快,目前我国在饲养技术和疾病控制方面与国际先进水平的差距不是很大,但在鸡舍控制环境方面存在着较大的差距,环境控制在鸡只生产过程中一直没有得到相应的重视,而鸡舍环境控制在生产中起着十分重要的作用。良好的鸡舍生存环境是鸡只健康生长的前提条件,是提高鸡只产品质量的重要保障。鸡只对养殖环境要求较高,如温度、气流速度和氨气浓度。因此对鸡舍环境的模拟研究也是十分有必要的。本文旨在通过对影响因素的模拟分析,获得鸡舍内气流组织的变化规律。通过对北方地区典型鸡舍横向通风和纵向通风的模拟研究,探讨鸡舍内两种通风模式气流组织分布的合理性。模拟研究了气流组织对鸡舍内环境因素的影响,给出了鸡舍的优化设计方案。首先,建立了横向通风和纵向通风鸡舍的数学物理模型,然后再用Airpark软件对鸡舍通风模式内的气流组织进行了数值模拟计算得出舍内空气温度场、速度场、氨气浓度场的分布。同时根据模拟得出的数据分析鸡舍内气流组织的舒适性。通过对模拟结果的数据分析可知,横向通风鸡舍内设备(如笼具)与气流流动方向排列垂直对鸡舍舍内的气流有很大的阻碍作用,导致气流的温度、速度和氨气浓度分布较为不均匀。同时在横向通风鸡舍廊道内产生涡流区,对鸡只的舒适性有一定的影响。纵向通风对气流的阻碍作用就大大减弱,而鸡舍两侧入风口共同作用导致在鸡舍两个墙角产生涡流区,影响鸡只的舒适性。而这些模拟的结论为进一步研究鸡舍通风的控制提供了数据和理论依据。其次我们根据纵向通风的模型尺寸和结论,在纵向通风模式中加入挡风垂壁进行模拟分析,得出挡风垂壁在鸡舍中的最佳优化设计方案。本文还对鸡舍内建筑结构进行了优化设计分析,分析进风口的各种形式对鸡舍气流组织的影响,通过分析我们知道在鸡舍中使用天花板式通风方式可以使鸡舍随时动态的调节舍内气流。同时我们对鸡舍内挡风垂壁的优化设计进行分析利弊,并总结鸡舍内稀释氨气浓度的设计方法。最后分析总结出鸡舍整体的优化设计方案,使其可以让鸡只更舒适的生长,提高鸡只产品的质量,并且达到节能的目的,同时给生产经营者提供理论和技术上的支持。
[Abstract]:With the improvement of living standard , the demand for poultry product quality is higher and higher . In recent years , the development speed of chicken products is relatively fast . In recent years , the gap between breeding technology and disease control is not great , but the environment control plays a very important role in the production of chicken .

The purpose of this paper is to study the regularity of air flow in chicken house by simulation analysis of influencing factors . Through the simulation study of lateral ventilation and longitudinal ventilation of typical chicken house in the northern area , the rationality of the distribution of two ventilation modes in chicken house is discussed . The influence of air flow organization on the environmental factors in chicken house is studied , and the optimal design scheme of chicken house is given .

Firstly , the mathematical physical model of transverse ventilation and longitudinal ventilation chicken house is established , and then the distribution of temperature field , velocity field and ammonia concentration field is calculated by using Airpark software in the ventilation mode of chicken house .

Through the analysis of the simulation results , it can be found that the air flow in the horizontal ventilation henhouse equipment ( such as the cage ) and the air flow direction has great obstruction to the air flow in the chicken house , which causes the temperature , velocity and ammonia concentration distribution of the air flow to be uneven .

Secondly , according to the model size and conclusion of longitudinal ventilation , the vertical ventilation mode is simulated and analyzed , and the optimal design scheme of the vertical wall in chicken house is obtained .

The paper also optimizes the building structure in chicken house , analyzes the influence of various forms of air inlet on the air - flow structure of chicken house , analyzes the advantages and disadvantages of the optimization design of the vertical wall in chicken house , and summarizes the design method of dilution ammonia gas concentration in chicken house .

At last , the optimal design scheme of the whole chicken house is analyzed and summarized , so that the chicken can only grow more comfortably , improve the quality of the chicken products , and achieve the aim of saving energy , and simultaneously provide theoretical and technical support for the production operators .
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU264.7;TU834.54

【参考文献】