Modeling and testing of a silica gel packed-bed system

A two-column packed-bed desiccant dehumidification system is tested and analytically modeled. The results are consistent. The desiccant is a spherical silica gel particle with an average diameter of 5 mm. The length of the columns are individually 9, 15 and 24 cm. Three regeneration temperatures are...

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Bibliographic Details
Published inInternational journal of heat and mass transfer Vol. 37; no. 8; pp. 1173 - 1179
Main Authors San, Jung-Yang, Jiang, Gwo-Donq
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1994
Elsevier
Subjects
Air conditioning. Ventilation
Air treatment
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heating, air conditioning and ventilation
Packed bed
Air treatment
Air dehumidification
Adsorption
Friction
Fluid
Steam
Silica gel
Simulation model
Experimental study
Heat transfer
Mass transfer
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Summary:A two-column packed-bed desiccant dehumidification system is tested and analytically modeled. The results are consistent. The desiccant is a spherical silica gel particle with an average diameter of 5 mm. The length of the columns are individually 9, 15 and 24 cm. Three regeneration temperatures are used, namely, 65, 75 and 85°C. An optimum operating time period is obtained. The heat and mass transfer is analyzed by using a solid-side resistance method with consideration of a fluid friction effect. The magnitude of the fluid friction effect is governed by the Reynolds number and a nondimensional length factor. For a long column or a high inlet air velocity the fluid friction effect becomes significant.
ISSN:0017-9310
1879-2189
DOI:10.1016/0017-9310(94)90203-8