侧墙上置/下置风口置换通风特性的数值计算  

Numerical Calculation of Displacement Ventilation Characteristics of Side Wall Upper/Lower Air Outlets

作　　者：吴兆波 WU Zhaobo(Gaochi International Design Co.,Ltd.Jinan Branch)

机构地区：[1]高驰国际设计有限公司济南分公司

出　　处：《上海节能》2024年第10期1704-1709,共6页Shanghai Energy Saving

摘　　要：建立了侧墙上置风口置换通风与侧墙下置风口置换通风的办公室模型,并对其进行了数值计算,分析了室内工作区空气温度、速度的分布特性,并比较了两种置换送风口布置方式的温度不均匀系数、速度不均匀系数及通风效率。结果表明,在室内冷负荷及送风参数相同的条件下,与侧墙下置风口置换通风相比,侧墙上置风口置换通风的工作区温度低0.7℃左右,且温度分布均匀性更好,但通风效率低10%。An office model with displacement ventilation with air outlets placed on side walls and displacement ventilation with air outlets placed under side walls was established.Numerical calculations were conducted to analyze the distribution characteristics of air temperature and velocity within the indoor working area.The temperature unevenness coefficient,velocity unevenness coefficient and ventilation efficiency of the two displacement air supply air supply arrangements were compared.The results show that under the same conditions of indoor cooling load and air supply parameters,compared with the displacement ventilation with the air outlet placed under the side wall,the temperature in the working area of the displacement ventilation with the air outlet placed under the side wall is about 0.7℃lower,and the temperature distribution is better,but the ventilation efficiency is 10%.

关 键 词：置换通风 温度不均匀系数 速度不均匀系数 通风效率 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程]