采用膜结构屋顶的大型娱乐中心项目的暖通空调设计
HAVC design for large entertainment center projects with membrane structure roofs
摘要：
以重庆市某大型娱乐中心项目为例,探讨了膜结构的热物理性能及其对室内舒适性和能耗的影响。项目采用PTFE(聚四氟乙烯)和ETFE(乙烯-四氟乙烯共聚物)2种膜材料,通过建模分析比较了不同太阳得热系数的膜材料对室内温度、辐射和舒适性的影响。结果表明,ETFE膜的高透光性有利于室内采光,但同时也增加了夏季太阳辐射对室内热舒适性的影响。为平衡室内舒适性与节能需求,结合项目特征,本研究提出了一种分层空调方案。通过模拟分析,该方案能有效提高室内舒适性并降低能耗。研究结果可为类似膜结构高大娱乐中心项目的暖通空调设计提供参考。
Abstract：
Taking a large entertainment center project in Chongqing as an example,this paper discusses the thermophysical properties of membrane structures and their impacts on indoor comfort and energy consumption.The project uses two membrane materials,PTFE (polytetrafluoroethylene) and ETFE (ethylene-tetrafluoroethylene copolymer).Through modeling analysis,the impacts of membrane materials with different solar heat gain coefficients on indoor temperature,radiation,and comfort are compared.The results show that the high light transmittance of ETFE membrane is beneficial for indoor lighting,but it also increases the impact of summer solar radiation on indoor thermal comfort.To balance indoor comfort and energy-saving requirements,combined with the project characteristics,this study proposes a stratified air conditioning scheme.Through simulation analysis,this scheme can effectively improve indoor comfort and reduce energy consumption.The research results can provide a reference for the HVAC design for similar large entertainment center projects with membrane structures.
Keywords:membrane structure; indoor comfort; solar heat gain coefficient(SHGC); stratified air conditioning; energy saving; solar radiation; entertainment center; HVAC design