基于Airpak3.0的建筑内天井热环境模拟

Thermal Environment Simulation of Inner Courtyard in Building Based on Airpak 3.0

东南亚国家建筑方案多采用建筑内天井通风采光,本项目方案设计之初拟将空调室外机放置于内天井中。基于Airpak3. 0气流模拟软件,对内天井中的气流进行数值模拟,验证了在一定时间稳定之后,空调室外机的工作环境温度超过其允许的最高温度。同时通过对比3种不同工况下的模拟结果,得出方形内天井较长方形内天井散热更优的结论。通过试算得到本项目条件下满足使用要求的最小内天井尺寸,对于方案确定具有重要意义。

Inner courtyard is frequently adopted for ventilation and lighting in Southeast Asian Architectural Design. In this project, designers decided to place the outdoor air conditioner inside the inner courtyard, however the machine cooling would be dramatically influenced by the size of this courtyard. For this reason, relevant thermal simulation is necessary. Based on the airflow simulation result conducted by Airpak 3.0, this paper verified that the operating temperature of outdoor air conditioner after stabilized would be higher than its＇ allowable maximal temperature. Additionally, by comparing with simulation results＇ acquired under three different conditions, the conclusion that the cooling effect of inner courtyard in square shape on outdoor air conditioner is better than rectangle shape courtyard. The calculation process of gaining the minimal size of inner courtyard that can fulfil related requirement in this project is also shown, and this experiment result plays a role in the decision making process of architectaral design.