摘要
气流组织是控制、安排空调区域内空气流动过程的技术,其优劣直接影响室内的空调效果,而室内气流组织与送风温度的大小有直接关系。以办公室空调房间为例,建立其数学和物理模型,用CFD软件Airpak模拟它在不同的送风温度下的室内温度场和速度场,得出送风温度与室内温度场和速度场的关系,并用能量利用系数指标对其设计效果进行评价。结果表明送风温度升高时,室内气流流形和各点速度大小几乎不变,相同位置的气流温度有所升高,但垂直方向上温度梯度变小。
Airflow distribution is the technique of controlling and arranging the air flow in the air-conditioning area. The quality of it takes an important part in the air-conditioning effect. The temperature of supply air has a direct relation with the airflow distribution. Taking one of office as model room, the relative mathematical and physical models are established, and indoor airflow of the model room at different air supply temperatures is simulated with CFD software： Airpak. The fields of air temperature, velocity are offered. The relation between air supply temperature and the field of air temperature and velocity is achieved. Finally, we valuate the airflow distribution with energy index 11 and get a best air supply temperature. The result indicates that the air-flow form and velocity at one point is hardly changed, the temperature increases and the temperature gradient decreases while the air-supply velocity is decreasing.
出处
《制冷与空调（四川）》
2008年第1期80-83,共4页
Refrigeration and Air Conditioning
