【中文摘要】 针对一典型办公建筑,在6次换气次数和19℃送风温度条件下实验研究了层式通风和置换通风的气流组织特性,分析比较了两种通风方式的工作区及人体附近温度场、速度场、CO2浓度场,对两种通风方式气流组织特性及热舒适性进行了数值模拟研究。研究结果表明,在层式通风系统条件下,呼吸区空气品质和热舒适性良好,通风能有效消除室内热负荷和污染物。
【英文摘要】 The airflow characteristics in a typical office building with stratum ventilation and displacement ventilation were investigated,respectively,in the conditions of six air changes and 19℃ supply air temperature.The temperature fields,velocity fields and concentration fields in the working area and the surrounding region of human body were analyzed and compared.The air?ow characteristics and thermal comfort with these two ventilation systems were studied by the numerical simulation.The experiment and calculation results show that,with the stratum ventilation,the IAQ and the thermal comfort in the breathing zone will be favourable,and the heat and air pollutants in the breathing zone can be removed effectively.
【中文关键词】 市政工程; 层式通风; 置换通风; 气流组织; 热舒适性
【英文关键词】 Municipal engineering; Stratum ventilation; Displacement ventilation; Airflow characteristics; Thermal comfort
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