A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangers

Ursula Wittstadt, Gerrit Füldner, Olaf Andersen, Ralph Herrmann and Ferdinand Schmidt
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Ursula Wittstadt: Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, D-79110 Freiburg, Germany
Gerrit Füldner: Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, D-79110 Freiburg, Germany
Olaf Andersen: Fraunhofer Institute for Manufacturing and Advanced Materials IFAM, Branch Lab Dresden, Winterbergstraße 28, D-01277 Dresden, Germany
Ralph Herrmann: SorTech AG, Zscherbener Landstr. 17, D-06126 Halle/Saale, Germany
Ferdinand Schmidt: Karlsruhe Institute of Technology (KIT), Institute of Fluid Machinery (FSM), Kaiserstr. 12, 76131 Karlsruhe, Germany

Energies, 2015, vol. 8, issue 8, 1-16

Abstract: In order to achieve process intensification for adsorption chillers and heat pumps, a new composite material was developed based on sintered aluminum fibers from a melt-extraction process and a dense layer of silico-aluminophosphate (SAPO-34) on the fiber surfaces. The SAPO-34 layer was obtained through a partial support transformation (PST) process. Preparation of a composite sample is described and its characteristic pore size distribution and heat conductivity are presented. Water adsorption data obtained under conditions of a large pressure jump are given. In the next step, preparation of the composite was scaled up to larger samples which were fixed on a small adsorption heat exchanger. Adsorption measurements on this heat exchanger element that confirm the achieved process intensification are presented. The specific cooling power for the adsorption step per volume of composite is found to exceed 500 kW/m 3 under specified conditions.

Keywords: adsorption heat exchanger (AdHEX); adsorption kinetics; SAPO-34; partial support transformation (PST); metal fibers; melt-extraction process (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (14)

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