新型传染病房通风空调方案的研究

【作者】 翁钰影；

【导师】 张少凡；

【作者基本信息】 南京理工大学 ， 供热、供燃气、通风及空调工程， 2004， 硕士

【摘要】 本论文针对以SARS为代表的烈性呼吸道传染病的传播特性，对传染病房的空调通风方式开展研究，以解决室内气流组织的合理分布，无害化排风以及系统的合理用能问题。文中综合应用计算流体力学的理论和方法模拟三维较复杂条件下隔离病房室内空气流场、浓度场以及温度场的湍流流动，在对数学模型及物理模型进行理论分析的基础上，对含湍流双方程模型及非均温强制对流的耦合方程组采用了联立迭代解方法，并使用了对流-扩散方程系数的计算法、SIMPLEC算法、交错网格法等，边界条件采用了的κ-ε占模型结合壁面函数的方法。并将数值模拟的结果采用计算机图形学的直观方式来表示多种气流组织方案的气流流型，由此证明本论文气流组织方案的合理性；同时通过比较、分析各种现有的杀菌消毒方法，提出一个针对传染病房使用特点的病房排风无害化的方案，并以实验数据来说明此种杀菌消毒处理的有效性；最后通过论述、计算比较，提出针对传染病房空调通风特点的合理的冷热回收措施。更多还原

【Abstract】 This paper carries out some disquisition on the way of infection sickroom ventilation, in order to make the indoor-air distributing reasonble, extracted air inoffensive, and the air-condition energy- economical on the base of the pestiferous peculiarities of respiratory infections such as SARS. It simulates the airflow concentration and temperature structure of the isolated sickroom by using the theoretics and methods of CFD. On the basis of the theoretical analysis of physical and mathematical model, the iterative method is adopted to the conjugated governing equations, and the numeration of the coefficient to the convection-diffusion equation, SIMPLEC algorism, staggered grid method are used, and so on. K-e turbulence model linked with the wall function are applied to the boundary condition. The results of numerical simulation for many different kinds of airflow are expressed in streamline chart of airflow structure through the computer graphics to prove the rationality of the flow structure in this paper, and some kinds of methods for sterilizing will be comparing and analyzing to confirm a best method to listerize the extracted air from sickrooms, proving it possible by data from experiments. Then, the paper comes out some methods about energy reclaim from the air by dissertation calculating and comparing.更多还原