Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 76: Issue 2
Investigation on the isotherm of silica gel+water systems
Authors:
X. Wang National University of Singapore Graduate School of Science and Technology Department of Mechanical Engineering 10 Kent Ridge Crescent Singapore 119260 Singapore 10 Kent Ridge Crescent Singapore 119260 Singapore

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W. Zimmermann University of Siegen Institute of Fluid- and Thermodynamics, Mechanical Engineering Department D-57068 Siegen Germany D-57068 Siegen Germany

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K. Ng National University of Singapore Graduate School of Science and Technology Department of Mechanical Engineering 10 Kent Ridge Crescent Singapore 119260 Singapore 10 Kent Ridge Crescent Singapore 119260 Singapore

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A. Chakraboty National University of Singapore Graduate School of Science and Technology Department of Mechanical Engineering 10 Kent Ridge Crescent Singapore 119260 Singapore 10 Kent Ridge Crescent Singapore 119260 Singapore

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J. Keller University of Siegen Institute of Fluid- and Thermodynamics, Mechanical Engineering Department D-57068 Siegen Germany D-57068 Siegen Germany

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Pages:
659–669
Online Publication Date:
03 Nov 2004
Publication Date:
01 May 2004
Article Category:
Research Article
DOI:
https://doi.org/10.1023/b:jtan.0000028045.96239.7e
Keywords:
thermogravimetry; silica gel; adsorption isotherm; isosteric heat; volumetric method
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Abstract  

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.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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