辐射供冷与贴附射流复合空调系统室内空气品质研究

Research on Indoor Air Quality of Radiant Cooling Combined with Wall-attached-jet System

以辐射供冷与竖壁贴附射流复合空调系统为研究对象,采用数值仿真和试验研究的方法对复合空调系统室内空气品质进行研究。结果表明,在辐射板温度和贴附射流送风参数选择合理的条件下,0.1~1.1m高度最大温差小于1.5℃,1.1m高度以下人员活动区温度在25.5~27℃之间,0.1~1.1m高度室内空气流速小于0.3m/s,复合空调系统的温度场、速度场分布均满足人体的热舒适性要求,同时贴附射流可以在冷辐射板表面形成一层干燥的空气隔离层,能有效防止结露现象发生。

The indoor air quality of radiant cooling combined with wall-attached-jet system was studied by numerical simulation and experimental measurement. The results show that the maximum temperature difference is less than 1. 5℃ at all section between 0. 1 and 1. 1m above the floor,and the temperature of staff occupied zone keeps in a range of 25. 5℃ to 27℃ under 1. 1m,meanwhile indoor air velocity is less than 0. 3m / s between the heights of 0. 1 and 1. 1m,so the temperature field and the velocity filed illustrate that the composite air-conditioning system can meet the thermal comfort for occupants. In addition wall-attached-jet can form a layer of dry air on the surface of radiant panels,which can effectively prevent condensation from occurring.