Heat and mass transfer modeling in rotary desiccant dehumidifiers

A desiccant wheel model has been developed in the aim to be adapted to building simulation tools. This model fulfils several criteria such as simplicity of parameterization, accuracy, possibility to characterize the equipment under all operation conditions and low computation time. The method of cha...

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Bibliographic Details
Published in:Applied energy 2009-05, Vol.86 (5), p.762-771
Main Authors: Stabat, Pascal, Marchio, Dominique
Format: Article
Language:English
Subjects:
Adsorption
Air conditioning
Air conditioning. Ventilation
Applied sciences
Desiccant
Desiccant Adsorption Heat and mass transfer Modeling Air conditioning
domain_spi.energ
Energy
Energy. Thermal use of fuels
Engineering Sciences
Exact sciences and technology
Heat and mass transfer
Heating, air conditioning and ventilation
Mechanics
Modeling
Physics
Techniques, equipment. Control. Metering
Thermics
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Summary:A desiccant wheel model has been developed in the aim to be adapted to building simulation tools. This model fulfils several criteria such as simplicity of parameterization, accuracy, possibility to characterize the equipment under all operation conditions and low computation time. The method of characteristics has been applied to the heat and mass transfer partial differential equations. This transformation provides new equations which are similar to those of a rotary heat exchanger. Then, the model is described by the Effectiveness-NTU method and it is identified from only one nominal rating point. The model has been compared to experimental and manufacturers’ data for a broad range of operating conditions. A good agreement has been found.
ISSN:0306-2619
1872-9118
DOI:10.1016/j.apenergy.2007.06.018