A New Approach to Heat and Mass Transfer in a Rotary Dehumidifier: Modeling and Simulation

Abstract

In this paper the analytical and simulation modelling of the combined heat and mass transfer processes that occur in a solid desiccant wheel is carried out. Using the numerical method, the performance of an adiabatic rotary dehumidifier is parametrically studied, and the optimal rotational speed is determined by examining the outlet adsorption-side humidity profiles. An approach to compare the solutions for different conditions used in air dehumidifier has been investigated according to the previous published studies. Comparing the simulated results with the published actual values of an experimental work substantiates the validity of model. The model accuracy with respect to the key variables (outlet and inlet temperatures and humidity) is optimized to minimize margin of error. This method is useful to study and modelling of solid desiccant dehumidification and cooling system.