摘要
利用地道风节约建筑空调和通风能耗,开发、利用新能源及可再生能源具有应用前景.在分析地道风降(升)温技术研究现状的基础上,分析并计算了土壤温度分布特性,将第4类边界条件即耦合边界条件引进地下工程的动态传热数值模型中,建立空气和壁面之间传热的数学模型.在非等温、非等热流边界条件下,对空气和地道换热过程进行模拟分析,系统地分析了各种因素对地道风降(升)温的影响,计算出在不同条件下室外空气经地道换热后的空气终温,为地道风在通风空调中的应用提供了依据.
Saving energy of building air-conditioning and ventilation by using tunnel-wind are re-raised under the promotion of development and utilization of new energy and renewable energy. Based on the analysis of the current research status of the temperature controlling technology using tunnel-wind, the distribution character of soil temperature was analyzed and calculated in this paper. The fourth class boundary condition, which is also named the coupled boundary condition, was adopted into the dynamic heat transfer numerical model of the underground project. Under the boundary condition of non-isothermal and unequal heat flux, the heat transfer process between air and tunnel was simulated and analyzed. Various kinds of factors to affect temperature reduc- tion （rise） of tunnel-wind were analyzed systemically. Finally,the air temperature after heat exchange with soil was calculated, which provides the basic foundation for application of tunnel-wind in air-conditioning system.
出处
《广州大学学报（自然科学版）》
CAS
2010年第5期67-72,共6页
Journal of Guangzhou University:Natural Science Edition
关键词
地道风
通风空调
耦合边界
动态模拟
air through tunnel
ventilating and air conditioning
coupling boundary
dynamic simulation
