桌面工位空调环境参数分布特性  

Research on Environmental Parameter Distribution Characteristics of Desktop Task Air-Conditioning

作　　者：端木琳[1] 舒海文[1] 王宗山[1] 李伟涛[2] 沈胜强[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116023 [2]海洋石油工程股份有限公司,天津300452

出　　处：《沈阳建筑大学学报（自然科学版）》2007年第2期306-310,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50678030)

摘　　要：目的分析桌面工位空调在人体周围所形成的非均一环境参数场,并进一步研究非均匀环境对人体热舒适的影响.方法利用计算流体力学PHOENICS软件建立湍流模型,分析不同工位送风参数以及一定的背景空调参数下,房间和人体周围的环境参数的分布状况.结果模拟结果发现桌面工位送风时,人体头部区域的温度明显低于人体其他区域,人体前与背景区相比平均温度有一定的差异,最大可达2℃.结论分析表明,当送风温度较低时,人体前与背景区之间可以产生较大温差;当送风温度较高时,两者之间只能形成较小的温差。同时,虽然人体前的温度与背景区的温度不同,但在一定的送风温度和送风量组合工况下,人在工作区和背景区都不会有过冷和过热的感觉.The air supply of desktop task air-conditioning （TAC） forms a non-uniform environmental parameters field around human body that is different from traditional air-conditioning. So the distribution of environmental parameters around working and background area and non-uniform environment should be under- stood when the thermal comfort of TAC is studied. Using CFD （computational fluid dynamics） software, the paper analyzes the environmental parameters distribution in the room and around a human body under different air supply parameters of TAC and background air-conditioning system. The simulation results show that the temperature around the head is apparently lower than that around other parts of the body in a TAC system, and the average temperature of human front area and background area differs as much as 2 ℃. And further study indicates that when the supply temperature of desktop task air-conditioning is low, the difference in temperature between human front area and background area can be higher; when the supply temperature of desktop task air-conditioning is high, the difference in temperature between human front area and background area cannot be higher, but certain combination of temperature and amount of air supply can make the PMV of both working and background area within -1 and ＋ 1.

关 键 词：热感觉 热舒适 空气调节 环境参数 

分 类 号：TU831.1[建筑科学—供热、供燃气、通风及空调工程]