Draft sensation distribution of air jet supply system in large space building in summer  

高大空间建筑夏季喷口送风系统的吹风感分布(英文)

作　　者：蔡宁[1] 黄晨[1] 曹伟武[2] 

机构地区：[1]上海理工大学环境与建筑学院,上海200093 [2]上海工程技术大学机械工程学院,上海201620

出　　处：《Journal of Southeast University(English Edition)》2010年第2期246-248,共3页东南大学学报（英文版）

基　　金：The National Natural Science Foundation of China(No.50478113);the Leading Academic Discipline Project of Shanghai Municipal Education Commission(No.J50502)

摘　　要：To study the draft sensation distribution of an air jet supply system in a large space building in summer,experiments are conducted in a large laboratory.The temperature,velocity and draft sensation distributions at a nozzle height of 4 m in the occupied zone are obtained.Then,the numerical simulation under the test condition is carried out by the computational fluid dynamics（CFD）method.The calculation results of the indoor vertical temperature and the draft sensation distribution are validated by the test data.Simulations with different nozzle heights are conducted.The satisfactory air supply condition is determined by analyzing the draft sensations and the temperatures in the occupied zone under three conditions.The simulation results show that the optimal draft sensation distribution and the uniform temperature and velocity fields can be obtained at a nozzle height of 5 m.为了研究高大空间建筑喷口送风系统的吹风感分布,在大空间实验室中进行了夏季工况的实验测试,得到了喷口高度为4m时人体活动区域温度场、速度场和吹风感的分布.然后,采用计算流体力学的方法对实验工况进行模拟计算.将室内垂直温度和冷吹风感分布的计算结果和实测数据进行对比验证,结果显示吻合良好.在此基础上进行了不同喷口高度处工况的模拟计算,通过分析3个工况下人体活动区域的吹风感和温度,获得了较理想的送风工况.模拟结果显示,喷口高度为5m时吹风感分布较为理想,温度场和速度场较为均匀.

关 键 词：computational fluid dynamics draft sensation air jet supply thermal comfort 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]