Numerical Simulation for Thermal Distribution of Air-conditioner Outdoor Units  

作　　者：Li-Ge Tong Zhen Zhang Li Wang Shao-Wu Yin Jiangfeng Yu Chun Liu 

机构地区：[1]School of Mechanical Engineering,University of Science&Technology Beijing,100083,China [2]Beijing Key Laboratory for Energy Saving and Emission Reduction of Metallurgical Industry,100083,China [3]Chinese people's liberation army 96819 power specialist group,Beijing,100015,China [4]China Dalian International Economic&Technical Cooperative Group Ltd.,Dalian,116011,China

出　　处：《Journal of Thermal Science》2012年第3期269-275,共7页热科学学报（英文版）

基　　金：supported by National Basic Research Program of China (973 Program)(No.2012CB720406);the Fundamental Research Funds for the Central Universities (No.FRF-AS-10-005B)

摘　　要：Air-conditioners used in high-rise residential or office buildings often have outdoor units installed on the side-walls or roofs in the confined space of the buildings.The heat released from the outdoor units causes the tem-perature rise in the confined installation space and leads to uncomfortable thermal environment and deteriorative performance of air-conditioners.The factors affecting the performance of air-conditioners are the heat released from the outdoor units,the solar radiation and the ventilation of the confined installation space,which are inves-tigated in this study and simulated by FLUENT using the porous model and discrete ordinates (DO) radiation model.It is proved that the porous model is more reliable than the solid model.The optimal installation distance from the supporting wall is obtained.The average temperature of the exit without wind is 1.18% higher than that with wind.The results show that the heat released from the outdoor units and the ventilation of the confined in-stallation space are the main factors affecting the thermal environment in the confined installation space.The in-fluence of the solar radiation is negligible.

关 键 词：high-rise building air conditioner heat rejection porous model solar radiation 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程] TQ171.623[化学工程—玻璃工业]