Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23152
Title: Effects of impregnating variables on dynamic sorption characteristics and storage properties of composite sorbent for solar heat storage
Authors: Wu, H
Wang, S 
Zhu, D
Keywords: Composite sorbent
Solar heat storage
Sorption characteristics
Sorption storage
Storage property
Issue Date: 2007
Publisher: Elsevier
Source: Solar energy, 2007, v. 81, no. 7, p. 864-871 How to cite?
Journal: Solar energy 
Abstract: A family of composite sorbents was prepared by impregnating silica gel in the solution of the hygroscopic salt CaCl2 for solar heat storage. The characteristics of water adsorbed on the composite sorbents prepared under different impregnating conditions were measured by a micromeritics gas adsorption analyzer, a Calvet-type microcalorimeter and an open-type gravimetric method. From the results of these dynamic sorption measurements, the effects of impregnating variables on the characteristics of water adsorbed on the composite sorbents were evaluated. The composite sorbents prepared under different impregnating conditions were also tested on an open-type sorption storage system. The composite sorbent prepared by impregnating in the CaCl2 solution of 30% showed a high and stable storage capacity of 1020 J g-1 at the charging temperature of about 90 °C. This study demonstrates a great potential in controlling the sorption characteristics as well as the storage properties of the composite sorbents by optimizing the impregnating variables to meet the specific demands of solar heat storage.
URI: http://hdl.handle.net/10397/23152
ISSN: 0038-092X
EISSN: 1471-1257
DOI: 10.1016/j.solener.2006.11.013
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