354-不同室外环境对室外机周围热环境的影响.pdfVIP

不同室外环境对室外机周围热环境的影响 1 天津商业大学，金梧凤 ，马竞达，蒋悦波 摘 要：目前的住宅建筑中，空调室外机一般布置于建筑凹槽结构内。本文主要研究了 不同室外环境（室外温度、室外风速风向）对室外机周围热环境以及能效的影响。通过采用 CFD 数值模拟，可以得到不同室外温度、室外风速风向下室外机的温度场和速度场变化规律。 研究表明：随室外环境温度的增大,室外机的进风温度升高；室外风为右侧风向的平均进风 温度明显低于正前风向室外风；随着正前方室外风风速的增加，室外风对室外机出风气流的 阻碍作用越明显，室外机的进风温度增大。 关键词：空调室外机；室外环境；数值模拟；热环境 Influence of different outdoor environments on the thermal environment around the outdoor unit Tianjin University of Commerce ，Jin Wu- feng1, Ma Jing-da,JiangYue-bo Abstract:In current residential buildings, the outdoor unit of the air conditioner is generally arranged in the groove structure of the building. This article mainly studied the effect of different outdoor environments (outdoor temperature, outdoor wind speed and direction) on the thermal environment around the outdoor unit and energy efficiency. By using CFD numerical simulation, the temperature field and velocity field of outdoor units with different outdoor temperatures and outdoor wind speeds can be obtained. Studies have shown that: With the increase of the outdoor ambient temperature, the outdoor units intake air temperature rises; the average outdoor air inlet air temperature is significantly lower than the positive front air direction; with the increase in the front wind speed, The outdoor wind has a greater obstruction effect on the outdoor air flow, and the outdoor air inlet temperature increases. Keywords: Outdoor unit of air conditioner; Outdoor environment; Numerical simulation; Thermal environment 0 引言 在现代建筑中，为了保持建筑外立面美观，空调室外机的布置一般为凹槽式，并用百叶 封闭。近年来，国内外很多学者或单位对空调室外机周围热环境做了相关研究，厦门市建筑 [ ] 设计院的黄章星 1 认为风冷室外机散热的影响因素有建筑构造、机型选择、风压、朝向和 [ ] 上下影响，应尽量采用侧吹型室外机、外挑式阳台，并附加风筒协助散热。M.Bojic 2 对高 层住宅建筑中每层布置四台空调的情况进行了 CFD 分析，结果