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Sztekler K, Kalawa W, Mlonka-Medrala A, et al. The Effect of Adhesive Additives on Silica Gel Water Sorption Properties. Entropy (Basel). 2020;22(3)doi: 10.3390/e22030327.
Sztekler, K., Kalawa, W., Mlonka-Medrala, A., Nowak, W., Mika, �. �., Krzywanski, J., Grabowska, K., Sosnowski, M., & Debniak, M. (2020). The Effect of Adhesive Additives on Silica Gel Water Sorption Properties. Entropy (Basel, Switzerland), 22(3), . https://doi.org/10.3390/e22030327
Sztekler, Karol, et al. "The Effect of Adhesive Additives on Silica Gel Water Sorption Properties." Entropy (Basel, Switzerland) vol. 22,3 (2020). doi: https://doi.org/10.3390/e22030327
Sztekler K, Kalawa W, Mlonka-Medrala A, Nowak W, Mika Ł, Krzywanski J, Grabowska K, Sosnowski M, Debniak M. The Effect of Adhesive Additives on Silica Gel Water Sorption Properties. Entropy (Basel). 2020 Mar 12;22(3). doi: 10.3390/e22030327. PMID: 33286102; PMCID: PMC7516784.
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Entropy (Basel). 2020 Mar 12;22(3). doi: 10.3390/e22030327.

The Effect of Adhesive Additives on Silica Gel Water Sorption Properties.

Entropy (Basel, Switzerland)

Karol Sztekler, Wojciech Kalawa, Agata Mlonka-Medrala, Wojciech Nowak, Łukasz Mika, Jaroslaw Krzywanski, Karolina Grabowska, Marcin Sosnowski, Marcin Debniak

Affiliations

  1. Faculty of Energy and Fuels, AGH University of Science and Technology, A. Mickiewicza Av.30, 30-059 Krakow, Poland.
  2. Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, Armii Krajowej 13/15, 42-200 Czestochowa, Poland.
  3. Innogy Polska S.A. ul. Wlodarzewska 68 02-384 Warszawa, Poland.

PMID: 33286102 PMCID: PMC7516784 DOI: 10.3390/e22030327

Abstract

Adsorption chillers are characterized by low electricity consumption, lack of moving parts, and high reliability. The disadvantage of these chillers is their large weight due to low adsorbent sorption capacity. Therefore, the attention is turned to finding a sorbent with a high water sorption capacity and enhanced thermal conductivity to increase chiller efficiency. The article discusses the impact of selected adhesives used for the production of an adsorption bed in order to improve heat exchange on its surface. Experiments with silica gel with three commercial types of glue on metal plates representing heat exchanger were performed. The structure of samples was observed under a microscope to determine the coverage of adsorbent by glue. To determine the kinetics of the free adsorption, the amounts of moisture adsorbed and the desorption dynamics the prepared samples of coated bed on metal plates were moisturized and dried in a moisture analyzer. Samples made of silica gel mixed with the adhesive 2-hydroxyethyl cellulose, show high adsorption capacity, low dynamic adsorption, and medium dynamic desorption. Samples containing adhesive poly(vinyl alcohol) adsorb less moisture, but free adsorption and desorption were more dynamic. Samples containing the adhesive hydroxyethyl cellulose show lower moisture capacity, relatively dynamic adsorption, and lower dynamic desorption.

Keywords: COP; adsorption bed; adsorption chiller; coated beds; silica gel

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