摘要
本文采用计算流体动力学方法模拟研究了热压自然通风和局部机械送风相结合的复合通风工业厂房室内气流组织和热流分布特征。研究了在不同热源强度,不同机械送风压力下厂房内气流分布,通风量,温度垂直分布以及排温效率的变化规律。结果表明:排温效率随着热源强度的增加而降低,随着机械送风强度的增大,排温效率先升高后降低再升高最后趋于平稳。研究结果可以为工业厂房通风系统设计提供一定的参考。
General features of the airflow patterns and heat and species distributions in the industrial workshop are numerically identified by the use of CFD, where the hybrid ventilation system combined with buoyancy driven natural ventilation and mechanical supplying fan ventilation was installed. Ventilation volume rate, vertical temperature distribution and the efficiency of heat removal in the industrial workshop are numerically calculated through changing the thermal source intensity and mechanical supply pressures. The results indicate that heat removal efficiency dropped as the heat source intensity increased. When the mechanical supply pressure increased, heat removal efficiency varied nonlinearly and finally became constant. The present paper probably provides reference to the industrial plant ventilation system design.
作者
赵福云
刘科君
申广
王汉青
寇广孝
ZHAO Fu-Yun LIU Ke-Jun SHEN Guang WANG Han-Qing KOU Guang-Xiao(School of Civil Engineering, Hunan University of Technology School of Power and Mechanical Engineering, Wuhan University School of Civil Engineering, University of South China)
出处
《建筑热能通风空调》
2017年第10期10-14,共5页
Building Energy & Environment
关键词
自然通风
机械通风
气流组织
温度分布
数值模拟
natural ventilation, mechanical ventilation, air flow distribution, temperature distribution, CFD simulation
