Two-dimensional coupled heat and moisture transfer model for wall and its validation
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.
building walltwo-dimensional coupled heat and moisture transferrelative humiditytransient
NETL
NSTL
万方数据
