摘要
本文针对干式地板辐射供冷结合置换通风复合式系统进行了实验研究,测量了从系统开启到关闭的室内温度、地板表面温度、围护结构表面温度等参数,分析了系统运行过程中地板表面温度、距地面0.1 m处空气露点温度和湿度、系统换热量、温度场和湿度场以及热舒适性变化。结果表明:置换通风系统的引入可有效地避免地面结露;系统稳定运行时,室内空气温度在竖直方向分布均匀;辐射换热量占总换热量的27.8%;水系统提供的辐射换热量有限,系统稳定时,热舒适性较差,这是由于系统供水温度偏高引起的,可通过降低供水温度得到改进。
In this paper, the experimental study on dry radiant floor cooling system combined with displacement ventilation system was carried out. When the system was under the on/off conditions, the temperatures of indoor air, floor surface and building envelope surface were measured. In addition, when the system was in operation, the parameters, including the floor surface temperature, the air dewpoint temperature and relative humidity above the floor of 0.1 m, the heat transfer capacity, temperature field, relative humidity field and thermal comfort, were analyzed. The experimental results indicated that the introduction of the displacement ventilation system could prevent the dew condensation effectively. When the system was operated under the stable condition, the indoor air temperature distribution was uniform in vertical direction, the radiant heat transfer capacity was 27.8 % of the total one. Furthermore, the radiant heat transfer capacity provided by the water system was limited, and because of the relatively higher supply water temperature, the thermal comfort level could not be satisfied under the stable condition.
出处
《建筑科学》
北大核心
2009年第6期38-42,共5页
Building Science
关键词
干式地板
辐射供冷
置换通风
实验研究
dry radiant floor, radiant cooling, displacement ventilation, experimental study
