摘要
自然通风效果与热压、风压强度及建筑物结构形式密切相关。对有平面热源及两个通风口的建筑模型进行了CFD研究。本研究涵盖了平面热源、风速及风口位置等三个因素:平面热源功率范围100～500W/m2,进风速度范围0.25～1.25m/s,进风口位置相对高度(进风口位置中心高度/房间高度)范围0.13～0.9。通过分析平面热源、进风口位置、进风速度等对室内温度场分布的影响,初步得出了风压与热压共同作用时室内温度场的分布规律。研究表明,当热压与风压共同作用时,室内存在一个温度相对较低的过渡区,且该过渡区有助于有效利用自然通风降低室温,提高通风效果。
A numerical study on a room with a heated floor and two openings was described, the effects of the heated floor, the opening and velocity on indoor air temperature field were analyzed. The power of the heated varied from 100 W/m^2 to 500 W/m^2 ,velocity varied from O. 25 m/s to 1.25 m/s and the opening height varied from 0.13 to 0.9. The research showed indoor air temperature field of heat press and wind press ventilation always exist a lower temperature transition section, which helped to reduce indoor air temperature by effective utilization of natural ventilation.
出处
《能源工程》
2008年第4期66-69,共4页
Energy Engineering
基金
国家自然科学基金资助项目(50278075)
关键词
自然通风
热压
风压
温度场
nature ventilation
wind
thermal buoyancy
indoor air temperature
