Adsorption Characteristics of a Novel Polymeric Desiccant
- Adsorption Characteristics of a Novel Polymeric Desiccant
- 이주현; 이대영
- desiccant; sorption; diffusivity
- Issue Date
- Thermal and Fluids Engineering Conference
- , 1-4
- Compared with conventional vapor compression air conditioning system, desiccant cooling system is
advantageous in being environment-friendly, energy saving and cost-effective. The properties such as isotherm and
diffusivity of desiccants play a significant role on the performance of desiccant cooling system. In this article, the
sorption characteristics of water vapor on the novel polymeric desiccant are studied experimentally using uptake
measurement method. Four sorption isotherms, correspond to 30°C, 40°C, 50°C, 60°C, are obtained at relative
humidity ranging from 5% to 70%. The kinetic sorption behavior is analyzed by applying modified Fick’s law and
diffusivity constants are also determined. The sorption capacity increases linearly with the relative humidity and the
temperature effect is not observed. The sorption capacity of the novel desiccant is found to be more than 2-5 times in
comparison with silica gel at the relative humidity of 70% showing a great potential for improved performance of a
desiccant cooling system.
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