辐射吊顶供冷方式节能舒适性研究  

Study on Energy Saving and Thermal Comfort of Radiant Cooling Ceiling Air Conditioning System

作　　者：李锦堂[1] 孙宗宇[1] 李骥[1] 邹瑜[1] 

机构地区：[1]中国建筑科学研究院建筑环境与节能研究院,北京100013

出　　处：《建筑科学》2015年第10期169-177,共9页Building Science

基　　金："十二五"国家科技支撑计划课题"建筑节能评估方法和指标体系研究"(2012BAJ12B03)

摘　　要：利用TRNSYS软件建立办公建筑空调过程计算模型,并分别设置对流供冷与辐射吊顶供冷2种空调方式。用PID控制吊顶水流量来调节辐射板冷量,使室内参数满足设计值。为保证控制的精确性,模拟计算时采用较小的时间步长(0.01 h)。在不同工况下,对建筑辐射吊顶供冷及对流供冷方式的室内舒适性、负荷进行模拟计算。结果表明,相同室内空气温度下,辐射吊顶供冷方式室内舒适性优于对流供冷方式;相同舒适性情况下,辐射吊顶供冷方式房间负荷小于对流供冷房间负荷。因此,辐射吊顶供冷方式具有良好的舒适性和节能性。Taken TRNSYS as the simulation platform,an air-conditioning simulation model for office building has been established,and the convective cooling and cooling ceiling air-conditioning system for the building were set respectively. The water flow rate of the ceiling was regulated by PID controller,so that the indoor parameters could meet the design values. Very small time step（ 0. 01 h） was adopted in TRNSYS to ensure the precision of simulation. The dynamic load and thermal comfort has been systematically studied of the office with the convective cooling and cooling ceiling air-conditioning system under different conditions. The simulation results show that the cooling ceiling air-conditioning system was better in comfort than the convective cooling air-conditioning system under the same air temperature,and the load of the cooling ceiling air-conditioning system was smaller than the convective cooling air-conditioning system under the same comfort. Therefore,the cooling ceiling air-conditioning system is of very good comfort and energy saving.

关 键 词：辐射冷吊顶 对流供冷 节能性 热舒适性 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]