Binder Influence on the Water Adsorption Uptake of Silica Gel

Ang Li; Kyaw Thu; Karan M. Sabnani; Kim Choon Ng

doi:10.4028/www.scientific.net/AMM.819.176

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Binder Influence on the Water Adsorption Uptake of Silica Gel
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 819Binder Influence on the Water Adsorption Uptake of...

Binder Influence on the Water Adsorption Uptake of Silica Gel

Abstract:

The heat transfer rate of an adsorbent embedded heat exchanger can be significantly improved by as much as three folds using powder adsorbent coated by binder on the fin surfaces of exchangers. The overall performance of such exchangers in an adsorption chiller, however, is determined both by the heat transfer and adsorption mass transport phenomena, which are also highly interlaced in the chiller operations. If a severe suppression on the latter is observed as a result of the binder, the heat exchanger may eventually underperform. This work evaluates the overall effect of the binder on the mass transport. It focuses on a common adsorbent-adsorbate pair utilized in the chiller, i.e. silica gel type 3A-water. A hydroxyethyl cellulose (HEC) is used as the binder. Experiment is conducted to measure the water equilibrium uptake of the pure and binder added silica gel at various temperatures. Based on the results, the net influence of the binder on the water uptake rate in the adsorption heat transfer process is determined.

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Periodical:

Applied Mechanics and Materials (Volume 819)

Pages:

176-180

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.819.176

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Online since:

January 2016

Authors:

Ang Li*, Kyaw Thu, Karan M. Sabnani, Kim Choon Ng

Keywords:

Adsorption Isotherm, Binder, Hydroxyethyl Cellulose, Silica Gel

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References

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