摘要
提出准三维土壤—空气传热传质模型,对地道通风系统内空气与土壤之间的热物理过程进行数值模拟。模型忽略土壤在地道方向的传热,并解决了出现凝结水时的模拟问题,同时利用实测数据对模型进行验证,模拟结果与实测数据基本符合。利用已验证的模型,该文对影响地道通风效果的长度、埋深、风速等参数进行了深入的模拟分析。以北京地区,文章指出地道埋深以3～4米较为适宜,而地道内风速不宜太大。
A quasi-three-dimensional model was developed to simulate earth-to-air heat exchange process in underground duct system（UDS）, which ignores heat transfer in the earth in the direction of air flow. The results of the mathematical model have been compared with the measured data, and a high level of agreement was obtained. Furthermore, the model was applied to analyze the effect of different parameters on the cooling/heating capability, including length, depth and air velocity. The depth should be 3 - 4 meters while the air speed should not be too high was proposed applying in Beijing.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2006年第9期923-928,共6页
Acta Energiae Solaris Sinica
关键词
地道通风系统
土壤-空气传热
数值模拟
underground duct system
earth-to-air heat exchange
numerical simulation
