Numerical method of coupled heat and mass transfer solution in static total heat exchangers

Heat and mass transfer in static total heat exchangers is a typical weak-coupled transfer problem in narrow and long channel. Assumes an analogy between fluid-solid coupled moisture transfer and fluid-solid coupled heat transfer. Establishes a mathematical model for coupled moisture and heat transfer. Taking a quasi-counter flow total heat exchanger as an example, presents the calculation method using present CFD software and verifies the computational results. The results show that the maximum deviation is 6.2% for sensible heat efficiency, and 3.8% for latent heat efficiency, at various air flow rates from 100 to 510 m³/h.