EXPERIMENTAL INVESTIGATION OF ROOM AIR STRATIFICATION IN AN UNDERFLOOR AIR DISTRIBUTION SYSTEM

摘要：

Physical tests were utilized to investigate air stratification in an UFAD room. The test chamber, 3.9m (L) ×2.9m (W) × 2.6m (H), was served by an air-conditioning and mechanical ventilation system which was capable of controlling the air temperature and airflow rate at the supply diffuser. The different supply air conditions and space heat loads approximated those found in building applications were tested. The results show that the parameter affecting room air stratification would be expressed by the length scale of the floor supply jet. When the length scale was smaller than the room height and increased from 0.83 m to 1.15 m, the ratio of vertical temperature difference at the free area to the difference between return and supply air temperature decreased from 0.59 to 0.47.

关键词： UFAD air stratification vertical temperature difference the length scale

作者: Qiongxiang KONG Bingfeng YU Qing YANG

作者单位: School of Energy & Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China;School of Human School of Energy & Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China School of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049,China

会议类型: 国际会议

会议名称: The 22nd International Congress of Refrigeration(第22届国际制冷大会)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-21（万方平台首次上网日期，不代表论文的发表时间）