Heat and math transfer mathematical model and numerical computation of rotary dehumidifier

The heat and mass transfer mathematical model of a rotary solid desiccant dehumidifier was presented. Some comparison were made between the scheme of using gas from the outlet dehumidified to regenerate solid adsorbent and the one without using gas from the outlet dehumidified to regenerate solid adsorbent. Some figures and laws have been got according to numerical simulation .On the given parameters of desiccant dehumidifier, the content of humid air decreases rapidly as the mass flow of regeneration air is increasing at 0~1.5 kg/(m²·s). If T₂＜450 K, the content of humid air decreases rapidly when T₂ is increasing. If T₂＞450 K, the content of humid air decreases slowly when T₂ is increasing. The results can be applied to optimize the design of rotary desiccant dehumidifier.