摘要
以温度和相对湿度为驱动势,建立夜间通风气流作用下围护结构的热湿耦合模型。选取上海作为夏热冬冷地区典型城市,利用COMSOL软件对适宜通风降温的典型气象日夜间通风阶段围护结构的热湿耦合特性进行分析。结果表明,湿传递对夜间通风过程中墙体内部的温度分布几乎无影响,对通风气流作用侧墙体的湿度影响较大;夜间通风气流与墙体内表面的热湿交换对靠近外表面的墙体区域的温度分布影响较小。随着时间的推移,通风气流与墙体内壁间热湿交换的驱动力越来越小,蓄冷效果越来越差。
A thermal and moisture coupled model of enclosure structures under the influence of night ventilation airflow is established,driven by temperature and relative humidity.Shanghai,a typical city in the hot summer and cold winter region,is selected to analyze the thermal and moisture coupled characteristics of enclosure structures during the night ventilation phase of typical meteorological days suitable for ventilation cooling,using the COMSOL software.The results show that considering moisture transfer has almost no effect on the temperature distribution within the wall during the night ventilation process,but it has a significant impact on the humidity of the wall on the side affected by the ventilation airflow.The thermal and moisture exchange between the night ventilation airflow and the inner surface of the wall has a minor influence on the temperature distribution in the wall area close to the outer surface.Over time,the driving force for the thermal and moisture exchange between the ventilation airflow and the inner wall of the wall decreases,resulting in a progressively worse cooling effect.
作者
夏利梅
杨秀峰
赵秋雨
XIA Li-mei;YANG Xiu-feng;ZHAO Qiu-yu
出处
《节能》
2024年第7期1-5,共5页
Energy Conservation
基金
常州市科技计划项目(项目编号:CJ20220049)
江苏省自然科学基金资助项目(项目编号:BK20161336)
江苏省建设系统科技指导项目(项目编号:2018ZD153)。
关键词
夜间通风
热湿耦合特性
夏热冬冷地区
COMSOL
多物理场数值分析软件
night ventilation
thermal and moisture coupled characteristics
hot summer and cold winter region
COMSOL
multi-physics numerical analysis software
