Calculation of Dehumidification Coefficients for Numerical Simulation of Desiccant Wheel

In the previous study, a numerical method which simulates combined heat and moisture transfer process in solid desiccant materials was investigated. The calculation results successfully reproduced the cyclic process of the moisture adsorption and desorption. The validity of the numerical simulation method for the desiccant wheel was examined by the comparison between the experiment and the numerical simulation of the desiccant dehumidifier.
In this paper, it reports that the dehumidification performance of the desiccant wheel could be expressed as two dehumidification coefficients (effectivenesses of the dehumidifier) in the psychrometric chart, from the result of the air temperature and humidity before and behind the desiccant wheel. One is effectiveness for relative humidity, another one is effectiveness for enthalpy.
It was shown that the average temperature and humidity of the wheel outlet air were predictable without depending on the regeneration air temperature by using the effectivenesses of the dehumidifier.