摘要
为解决高大空间建筑如剧院、体育馆等空调能耗巨大的问题,该文以海南某剧院为例,针对大空间建筑提出地道风预冷-太阳能通风塔一体化系统。该系统利用地道风作为天然冷源将室外空气冷却,以太阳能通风塔增强热压而产生强大的浮力作为驱动,使剧院以被动冷却方式消除内部余热。并借助于Fluent软件主要对地道长度对一体化系统通风性能的影响进行了数值模拟。结果表明:对于单地道复合系统,当地道长度从80 m增至140 m时,送风温度降低2℃,提高了工作区的舒适性,同时导致通风量降低约17%。但当地道长度分别为80、100 m时,剧院后排一些座位的温度、通风速度已超过或接近舒适性标准的上限。并将单地道优化为双地道复合系统,发现达到相同送风温度情况下,双地道系统所要求的单条地道长度减小,且整个工作区的温度场、速度场比单地道复合系统更加均匀。
In order to decrease the air condition energy consumption of high and large-space building such as theatre and stadium,this paper puts forward an integrated system of tunnel and solar wind tower for the passie cooling system of a theater in Hainan.In this system,the outdoor air is cooled by tunnel heat exchanger and powered by the strong buoyancy generated by the thermal pressure enhanced by the solar wind tower,which can eliminate the surplus heat in the theatre by natural ventilation.Effect of tunnel length on ventilation performance of the integrated system is simulated by software of FLUENT.The results show that the air supply temperature is reduced by 2℃,which improves the comfort of the working area,while the air flow rate is reduced by 17%when the length of the tunnel is increased from 80 m to 140 m for the single tunnel integrated system.The temperature and velocity at back row seats are exceed and approximate the upper limit when the length of the tunnel is 80 m and 100 m.Compared with the single tunnel integrated system,in order to attain the same supply temperature,the double tunnel length can be decreased greatly and the temperature and velocity are more uniform.
作者
刘丽孺
吴成赫
刘琳
潘鑫沛
王璋元
Liu Liru;Wu Chenghe;Liu Lin;Pan Xinpei;Wang Zhangyuan(School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2021年第6期216-221,共6页
Acta Energiae Solaris Sinica
基金
广东省自然科学基金(2016A030313711)
广东工业大学大学生创新创业项目(xj201911845282)。
关键词
被动冷却
地道
太阳能通风塔
复合系统
性能研究
数值模拟
passive cooling
tunnel
solar wind tower
integrated system
performance study
numerical simulation
作者简介
通信作者:刘丽孺(1971-),女,博士、教授,主要从事建筑节能、空调系统节能方面的研究。liruhongfu2006@126.com。
