室内环境参数对室外气象参数瞬时变化的动态响应研究  

Dynamic response study of the indoor environmental parameters for variable outdoor meteorological conditions

作　　者：王烨[1] 张文霞[2] 胡文婷[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070 [2]北京工业大学建筑工程学院,北京100124

出　　处：《重庆大学学报（自然科学版）》2015年第3期8-14,共7页Journal of Chongqing University

基　　金：国家自然科学基金项目(51266004;51476073);甘肃省自然科学基金项目(1308RJZA151)~~

摘　　要：为研究空调房间室内环境参数对室外气象参数瞬时变化的动态响应,采用CFD中的标准k-ε模型对兰州地区某办公室在考虑非稳定传热情况下的室内气流组织和污染物浓度场进行数值分析,获得了顶送风/下回风和侧送风/下回风两种通风模式下室内流场、温度场及污染物浓度场的分布。结果表明:不同时刻的太阳辐射通过激励室内自然对流换热过程对室内污染物的空间分布及迁移特性产生了显著影响。同一送风模式下,16:00时室内的污染物浓度较8:00时均匀,而8:00时的污染物浓度平均水平较高;在同一送风参数下,采用顶送风方式时更有利于降低室内污染物浓度。To study the indoor environment parameters dynamic response to the instantaneous variation of outdoor meteorological conditions in Lanzhou,a standard k-ε turbulent model of CFD is adopted to numerically analyze the pollutant concentration field and airflow distribution in an office when the unsteady heat transfer through outer walls is considered.The velocity field,temperature field and pollutant concentration field of two air supply modes,ceiling air supply and lateral air supply,are obtained.The results indicate that the pollutant concentration field and migration characteristics are affected significantly by the solar radiation resulting from stimulating the natural convention heat transfer in the room.Under the same air supply mode,the indoor pollutant concentration is more uniform at 16：00than that at 8：00.And the average value of pollutant concentration at 8：00is relatively higher than that at 16：00.At the same air supply parameters,the ceiling air supply mode is more beneficial to lower the indoor pollutant concentration.

关 键 词：室外气象条件 非稳定传热 通风模式 气流组织 空气品质 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]