摘要
利用CFD仿真技术,对卧式明装风机盘管与辐射地板的空调末端组合进行了供冷模拟研究,分析了风机盘管送风状态、辐射末端表面温度等参数对室内温湿度环境、均匀度及舒适性的影响规律。模拟结果表明:送风与地板辐射末端组合在保证室内符合国家标准的舒适度要求时,能维持较好的热环境均匀度;送风风速不宜过大,否则会造成吹风感强烈;为防止结露和保证舒适性,送风相对湿度要低于70%;送风温度增加导致室内温度增加幅度较大,地板表面温度增加导致室内温度增加幅度较小,即室内温度对送风温度变化更加敏感;当地板表面温度增加时,室内温度和相对湿度的均匀性得到改善,舒适性提高,且结露风险大大降低,因此在满足舒适性要求的情况下,建议适当增加地板表面温度。
Based on CFD Simulation, combination cooling of horizontal exposed fan coil and floor radiation terminal was simulated and studied . The influences of air output state and surface temperature of radiation terminal on indoor temperature - humidity environment, uniformity and comfort were analyzed. Simulation results show that the indoor comfort requirement of national standard is met and the uniformity of indoor thermal environment is well by combination of air supply terminal and radiation terminal. Draft feeling is strong and comfort deteriorates because of big supply air velocity. For the prevention of moisture con- densation and ensuring comfort, relative humidity of supply air should be less than 70%. Indoor temperature is increased more by supply air temperature increasing than floor surface temperature increasing. Indoor temperature is more sensitive to the supply air temperature variation than floor surface temperature. With floor surface temperature increasing, uniformities of indoor temperature and relative humidity and comfort are improved, moisture condensation risk are decreased largely. In the meet of comfort requirements, suitably increasing floor surface temperature is recommended.
出处
《低温与超导》
北大核心
2017年第11期73-78,共6页
Cryogenics and Superconductivity
基金
合肥通用机械研究院青年科技基金项目(2016010476)资助
关键词
组合末端
数值模拟
供冷
均匀性
舒适性
Combined terminals, Simulation, Cooling, Uniformity, Comfort
