墙体二维热湿耦合传递模型及验证
Two-dimensional coupled heat and moisture transfer model for wall and its validation
刘向伟 1高强 1郭兴国1
作者信息
- 1. 南昌大学工程建设学院,江西 南昌 330031;江西省超低能耗建筑重点实验室,江西 南昌 330031
- 折叠
摘要
为了更加准确地分析墙体内部温湿度分布及热湿桥对建筑能耗的影响,考虑湿传递及其对热传递的影响,基于多孔介质传热传质理论,以温度和相对湿度为热湿驱动势,建立建筑墙体二维热湿耦合传递模型,并采用COMSOL对模型进行数值求解.通过将新建模型模拟结果与ISO 10211中的验证案例1的解析解对比,结果表明温度分布的最大差值仅为0.17℃,与其他模型模拟结果进行对比,吻合良好,验证了模型的准确性.
Abstract
To more accurately analyze the temperature and humidity distribution inside the wall and the effect of hygrothermal bridges on building energy consumption,a two-dimensional coupled heat and moisture transfer model of the building wall was established,and the model was numerically solved by COMSOL.The model considered the moisture transfer and its effect on heat transfer,was based on the theory of heat and mass transfer in porous media,with temperature and relative humidity as the driving potential of heat and moisture.By comparing the simulation results of the newly developed model with the analytical solution of the validation case 1 in ISO 10211,the results showed that the maximum difference in temperature distribution was only 0.17℃,and the agreement was good when comparing with the simulation results of other models,which verified the accuracy of the model.
关键词
建筑墙体/二维热湿耦合传递/相对湿度/非稳态Key words
building wall/two-dimensional coupled heat and moisture transfer/relative humidity/transient引用本文复制引用
出版年
2024
NETL
NSTL
万方数据