摘要
环境热舒适是衡量建筑物等级的重要指标。据大量实验与现场研究表明,PMV热舒适模型存在一定的偏差,有待完善、改进。现有PMV计算模型计算的各散热项、热负荷、PMV值与实际存在偏差;适用于PMV评价模型“接近热中性”环境条件、人体热负荷定义及其计算方法还存在异议。通过理论分析,本研究提出了新的“接近热中性”环境条件、新的人体热负荷定义及其计算方法,提出了新的PMV计算模型,并经对比分析发现,新的模型修正了在偏热环境下的现有PMV预测偏差。另一方面,在新的热负荷计算方法下,PMV与热负荷之间的函数关系K;必须进行相应调整,要获得准确的K;函数关系,必须获得较准确的人体平均皮肤温度与环境参数间的关系。
Environmental thermal comfort is an important index to measure the grade of buildings.According to a large number of experiments and field studies,the PMV thermal comfort model still needs to be improved There is a certain deviation between the heat dissipation terms,heat load and PMV value calculated by the existing PMV calculation model and the actual value;There are still some objections to the definition of human thermal load and the calculation method of the environmental conditions of“near thermal neutrality”suitable for PMV evaluation model.Through theoretical analysis,this paper puts forward a new“near thermoneutrality”environmental condition,a new definition of human thermal load and its calculation method,and proposes a new PMV calculation model.Through comparative analysis,it is found that the new model corrects the existing deviation of PMV prediction in the hot environment.On the other hand,under the new thermal load calculation method,the functional relation(K;)between PMV and thermal load must be adjusted accordingly.In order to obtain an accurate functional relation(K;),a more accurate relation between average human skin temperature and environmental parameters must be obtained.
作者
柳光磊
刘何清
欧聪颖
吴世先
吴国珊
LIU Guanglei;LIU Heqing;OU Congying;WU Shixian;WU Guoshan(School of Resources,Environment and Safety Engineering,Hunan University of Science and Technology,411201 Xiangtan,China;College of Physics and Engineering Technology,Xingyi Normal University for Nationalities,562400 Xingyi,China)
出处
《应用力学学报》
CAS
CSCD
北大核心
2022年第3期588-597,共10页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金资助项目(No.51864014,51704110)。
关键词
PMV计算模型
热中性
接近热中性
热负荷
热舒适
散热
PMV calculation model
thermal neutral
near thermal neutrality
heat load
thermal comfort
heat dissipation
