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Investigation on the isotherm of silica gel + water systems by using TG and volumetric methods


Wang, X and Zimmerman, W and Ng, KC and Chakraborty, A, Investigation on the isotherm of silica gel + water systems by using TG and volumetric methods, Journal of Thermal Analysis and Calorimetry, 76, (2) pp. 659-669. ISSN 1388-6150 (2004) [Refereed Article]


This article presents results of the experimental investigation on the adsorption of the water vapor on silica gel. Two independent experimental methods has been used, viz. the constant-volume-variable-pressure (CVVP) system and variable pressure thermogravimetry (TG). Results from these two methods are compared with each other. Also the isosteric heat of adsorption of this system has been determined from the equilibrium data. The silica gels investigated here are Fuji Davison type 'A' and type 'RD'. Adsorption isotherm of water vapor have been measured under a variety of conditions all referring to chiller operation cycles, i.e. temperatures from 303 to 358 K and pressures from 500 to 7000 Pa. The data collected from the two independent experiments compare very favorably with each other and their trends are consistent with those of the adsorption chiller manufacturer. This lends significant weight to our experimental data on silica gel+water systems as being valuable to the adsorption chiller manufacturers and the scientific community.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Other engineering
Research Field:Other engineering not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Wang, X (Professor Xiaolin Wang)
ID Code:81229
Year Published:2004
Web of Science® Times Cited:60
Deposited By:Engineering
Deposited On:2012-11-27
Last Modified:2012-11-27

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