教室内不同送风方式气流组织有效性对比

Comparative Study of the Air Distribution Effectiveness in Classrooms Between Impinging Jet Ventilation and Mixing Ventilation Systems

以教室为研究对象,通过三维CFD数值模拟,对比研究了碰撞射流通风和混合通风在用于教室冬季热风供暖时室内气流流动结构的差异。通过分析不同送风温差下室内空气分布特性,利用不均匀系数、吹风感、能量利用系数等指标对两种送风方式的通风效果进行了评价。

Taking the classroom as the research object, three-dimensional numerical simulations were employed to make a comparative study of the indoor air distribution effectiveness between the impinging Jet Ventilation(IJV) and Mixing Ventilation(MV) systems used for room heating. By analyzing the distributions of air velocity and temperature under different supply air temperature differences, the ventilation performances of the two air supply modes were evaluated. The considered evaluation indices were uniformity coefficient, Draught Discomfort(PD), energy utilization coefficient.