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On the development of an innovative adsorber plate heat exchanger for adsorption heat transformation processes; an experimental and numerical study

  • An innovative adsorber plate heat exchanger (APHE), which is developed for application in adsorption heat pumps, chillers and thermal energy storage systems, is introduced. A test frame has been constructed as a representative segment of the introduced APHE for applying loose grains of AQSOA-Z02. Adsorption kinetic measurements have been carried out in a volumetric large-temperature-jump setup under typical operating conditions of adsorption processes. A transient 2-D model is developed for the tested sample inside the setup. The measured temporal uptake variations with time have been fed to the model, through which a micro-pore diffusion coefficient at infinite temperature of 2 E−4 [m2s−1] and an activation energy of 42.1 [kJ mol−1] have been estimated. A 3-D model is developed to simulate the combined heat and mass transfer inside the APHE and implemented in a commercial software. Comparing the obtained results with the literature values for an extruded aluminium adsorber heat exchanger coated with a 500 μm layer of the same adsorbent, the differential water uptake obtained after 300 s of adsorption (8.2 g/100 g) implies a sound enhancement of 310%. This result proves the great potential of the introduced APHE to remarkably enhance the performance of adsorption heat transformation appliances.

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Metadaten
Author:Makram Mikhaeil, Matthias GadererORCiD, Belal DawoudORCiDGND
DOI:https://doi.org/10.1016/j.energy.2020.118272
Parent Title (English):Energy
Publisher:Elsevier
Document Type:Article
Language:English
Year of first Publication:2020
Release Date:2022/01/19
Tag:Adsorber heat exchanger; Adsorption kinetics; Dynamic simulation; Plate heat exchanger
Volume:207
Issue:September
Article Number:118272
First Page:1
Last Page:13
Note:
Corresponding author: Belal Dawoud
Institutes:Fakultät Maschinenbau
Begutachtungsstatus:peer-reviewed
research focus:Energie und Mobilität
OpenAccess Publikationsweg:Hybrid Open Access - OA-Veröffentlichung in einer Subskriptionszeitschrift/-medium
Corresponding author der OTH Regensburg
Licence (German):Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International