Abstract
The study aims at clarifying the local heat and mass transfer in the desiccant rotor, and at obtaining the design aspects of high efficient desiccant rotor and operation method. In the paper, theoretical analysis is performed for rotary dehumidifier. Both surface diffusion and mass transfer coefficient are considered in the model. The local temperature, humidity and the amount of adsorbed water vapor are calculated. It is examined that temperature and humidity of air in the rotor change clockwise between each inlet air condition on the psychrometric chart. The reason that the system has the optimum adsorption and desorption rate. It is attributed to the increase of mass transfer coefficient and surface diffusivity.
