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  4. Versatile siloxane based adsorbent coatings for fast water adsorption processes in thermally driven chillers and heat pumps
 
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2015
Journal Article
Title

Versatile siloxane based adsorbent coatings for fast water adsorption processes in thermally driven chillers and heat pumps

Abstract
In this work a versatile and hydrothermally stable binder based coating with fast adsorption kinetics for the use in thermally driven adsorption chillers, heat pumps and within dehumidification processes is reported. Two different adsorbents, a SAPO-34 with a typical adsorption isotherm favorable for low desorption temperatures and a zeolite Y for higher desorption temperatures were used. The coatings were prepared out of an aqueous dispersion for different binder contents with a minimum of 2.5 wt%. The performance of the coating and the influence of the binder on the equilibrium and dynamic adsorption characteristics were evaluated by means of thermogravimetry and a volumetric pressure jump method. Finally the hydrothermal stability under typical application boundary conditions was evaluated with surprisingly fair stability even for a very low binder content of a 2.5 wt%.
Author(s)
Kummer, Harry
Füldner, Gerrit  
Henninger, Stefan K.  
Journal
Applied thermal engineering  
DOI
10.1016/j.applthermaleng.2015.03.042
Language
English
Fraunhofer-Institut für Solare Energiesysteme ISE  
Keyword(s)
  • Thermische Anlagen und Gebäudetechnik

  • energieeffizientes Gebäude

  • Servicebereiche

  • Elektrische und thermische Wärmepumpen

  • Wärmeübertragung in gebäudetechnischen Anlagen

  • Kühlung und Klimatisierung von Gebäuden

  • Prüflabor für Adsorptionsmaterialien und poröse Materialien

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