地板辐射供冷室内热环境改善研究*
Indoor thermal environment improvement of floor radiant cooling
摘要：
在地板辐射供冷中，室内空气温度常出现较大的竖直温差，使人产生头热脚冷的不舒适感。为改善地板辐射供冷中竖直温度分布不均匀的状况，采用吊扇通风和风机盘管侧吹通风来优化气流组织，改善室内温度场及舒适度。实验结果表明：与无通风相比，有通风时室内竖直温差由5 ℃左右降到1 ℃以下，显著改善了室内空气竖直温度分布不均匀的现象；供水流量与温度相同时，与无通风和风机盘管侧吹通风相比，吊扇通风时地板温度最高、空气温度最低、竖直温差最小，室内热环境最舒适，环境质量改善显著。
Abstract：
In floor radiant cooling, the indoor air temperature field often occurs a large vertical temperature difference, which makes people feel uncomfortable with hot head and cold feet. In order to improve the uneven vertical temperature distribution in floor radiant cooling, adopts ceiling fan ventilation and fan coil side blowing ventilation to optimize the air distribution and improve the indoor temperature field and comfort. The experimental results show that compared with no ventilation, the indoor vertical temperature difference drops from about 5 ℃ to less than 1 ℃ with ventilation, which significantly improves the vertical indoor air temperature distribution. At the same supply water flow rate and temperature, compared with no ventilation and fan coil side blowing ventilation, ceiling fan ventilation leads the highest floor temperature, the lowest air temperature, the smallest vertical temperature difference, the most comfortable indoor thermal environment, with significant environmental quality improvement.
Keywords:floor radiant cooling, ventilation, air distribution, vertical temperature difference, indoor thermal environment