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本文从热湿迁移机理出发，通过在液相渗流中引入毛细滞后的影响，采用液相运动的最小梯度假设，建立了未饱和含湿多孔介质在考虑毛细滞后效应时传热传质的较普遍的模型理论．并对方程中的热湿迁移特性系数进行了分析，为进一步发展确定热湿迁移特性的有效实验方法提供了依据。
In this paper, based on the mechanism of heat and moisture transfer, the capillary gradient hysteresis is introduced into liquid-phase seepage flow and the minimum gradient assumption of liquid-phase motion is used to establish the heat and mass transfer of unsaturated porous medium considering capillary lag effect Model theory. And the coefficient of heat and moisture migration in the equation is analyzed, which provides a basis for further development of an effective experimental method for determining the heat and moisture transfer characteristics.