doi: 10.3850/978-981-08-7614-2_IMPRES014

ABSTRACT

In this paper, we have developed a simulation model of a desiccant wheel to use the investigation of the optimum design and operation. For this usage, the high precision model has to be constructed for the global design and operating conditions. Heat and mass transfer phenomenon inside the desiccant wheel are divided into the convection heat and mass transfer inside air channels and heat and mass diffusions inside desiccant walls. Therefore, the simulation model is developed separately divided into the air channel and the desiccant wall. In the desiccant wall, the model is constructed by considering the diffusion in the porous solid. On the other hand, in the air channel, the convective heat and mass transfer coefficients are derived from the CFD analysis. To validate the model, we examined the effect of the air superficial velocity on the pressure drop and the effect of the regeneration air inlet temperature on the outlet humidity and temperature. As a result, The simulation results are in good agreement with the experimental results and the validity of this simulation model was confirmed.

Keywords: Adsorption, Desiccant, Dehumidification, Air-conditioning, Simulation.

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