Theoretical and Experimental Study on the Performance of a Fluidized Air Dryer
Walaa Ramadan Abd El Rahman Abd El Rahman;
Abstract
Transient adsorption/desorption characteristics of solid desiccant particles in fluidized bed system have been presented. The system operates in batch mode and atmospheric air with controlled inlet humidity and temperature is dehumidified by the applied desiccant. Also, heated air is used for regeneration purposes. A simplified analytical solution, with isothermal adsorption assumption, is demonstrated.
In the experimental study, spherical particles of silica gel about 3 mm in
diameter are used as the working desiccant in the fluidized bed. The experimental system is equipped with the necessary control valves to facilitate operation in adsorption and desorption modes, respectively. To control the humidity of the inlet air, a humidifier is designed and fitted in the proper location in the system. Also, the system is well instrumented to measure the inlet and outlet air parameters as well as bed temperatures during the operation modes.
Transient values of the adsorbed water mass in the bed, rate of adsorption and
water content in silica gel particles are evaluated from the experimental • measurements. Also, numerical values of the volumetric mass transfer coefficient are plotted and discussed for different operating conditions.
Model output, which show the dependence of the dimensionless value of water
content in the bed [(w;- w)/(w;- w
with the experimental results.
)] on the dimensionless time, is compared
In the experimental study, spherical particles of silica gel about 3 mm in
diameter are used as the working desiccant in the fluidized bed. The experimental system is equipped with the necessary control valves to facilitate operation in adsorption and desorption modes, respectively. To control the humidity of the inlet air, a humidifier is designed and fitted in the proper location in the system. Also, the system is well instrumented to measure the inlet and outlet air parameters as well as bed temperatures during the operation modes.
Transient values of the adsorbed water mass in the bed, rate of adsorption and
water content in silica gel particles are evaluated from the experimental • measurements. Also, numerical values of the volumetric mass transfer coefficient are plotted and discussed for different operating conditions.
Model output, which show the dependence of the dimensionless value of water
content in the bed [(w;- w)/(w;- w
with the experimental results.
)] on the dimensionless time, is compared
Other data
| Title | Theoretical and Experimental Study on the Performance of a Fluidized Air Dryer | Other Titles | دراية نظرية وتجريبية عن اداء مجفف هواء ذى مهد مميع | Authors | Walaa Ramadan Abd El Rahman Abd El Rahman | Issue Date | 2005 |
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