某高层建筑凹槽内室外机热环境模拟及优化  

Simulation and Optimization of Thermal Environment for Outdoor Units of Air Conditioner in Groove of a High-rise Building

作　　者：于涛[1] 赵影 石颖 田鹏 YU Tao;ZHAO Ying;SHI Ying;TIAN Peng(Shandong Jianzhu University,Jinan 250100,China;Shandong Provincial Architecture Design and Research Institute Co.,Ltd.,Jinan 250100,China)

机构地区：[1]山东建筑大学,济南250100 [2]山东省建筑设计研究院有限公司,济南25010

出　　处：《建筑节能（中英文）》2022年第4期72-77,共6页Building Energy Efficiency

基　　金：山东省自然科学基金资助项目(ZR2019MEE083)。

摘　　要：凹槽结构是高层建筑室外机预留机位的常用方式,凹槽内的热环境特性对于空调制冷能力的发挥具有重要影响。以某高层居住建筑为研究对象,通过CFD仿真模拟,对比分析不同的凹槽顶部形式和室外机排列方式下凹槽内的速度场和温度场,提出室外机布置的改善方案,以期为类似工程项目提供参考。研究结果表明:高层建筑室外机排风受浮升力影响显著,会对上层设备产生不利影响;在凹槽顶部开设孔洞可减轻浮升力产生的热量堆积;室外机采用错位排列可减轻同层设备间的热干扰;奇偶楼层室外机错层排列,可阻断热浮升力作用。项目采取凹槽顶部开设孔洞、同层两室外机在朝向和高度错位布置的方案,可有效降低室外机进风温度,提高机组运行效率。Outdoor units of air conditioners in high-rise buildings are usual placed in groove structures, and the thermal environment characteristics in the groove have significant influence on the capacity of air-conditioning refrigeration. A high-rise residential building is chosen as the project case, the velocity field and temperature field of outdoor units in different groove top forms and outdoor units’ arrangements are simulated and compared by using CFD. Improving solutions are proposed to provide reference for the similar design. The results show that the running of outdoor units in high-rise buildings is greatly affected by buoyancy, which will have a negative effect on the upper equipment. opening holes on the groove’s top can reduce the heat accumulation caused by thermal buoyancy, the outdoor units’ dislocation arrangement can decrease the thermal interference of equipment on the same floor, and the outdoor units’ dislocation arrangement on different floors can cut off the effect of the thermal accumulation. For this project, the method of opening holes on the groove’s top and dislocating outdoor units on the same floor in the orientation and height can effectively reduce the temperature of the air inlet and improve the efficiency of the outdoor units.

关 键 词：CFD 室外机 热环境 凹槽形式 排列方式 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]