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Transient modeling of an adsorber using finned-tube heat exchanger

Riffel, Douglas B.; Wittstadt, Ursula; Schmidt, Ferdinand P.; Núñez, Tomás; Belo, Francisco A.; Leite, Antonio P.F.; Ziegler, Felix

This paper presents a heat and mass transfer simulation of an adsorber, taking into consideration the geometry of the heat exchanger and the diffusion in the adsorbent medium. In this model, an increment in the direction of heating/cooling fluid containing one (or more) fin pitch was considered. In the domain of this increment, the distribution of the adsorbent temperature was evaluated in the radial and axial directions. The model is validated by experimental data of different adsorbents, volume flows and temperatures. All data were collected in an adsorber test-bench at Fraunhofer ISE. As a result it was found a coefficient of multiple determination of around 0.94 and an error of 20% during the transient. Finally, the model was run on typical operation for cooling application and compared with data from literature. A numerical energy balance was also evaluated. In summary, the results obtained by a independent group shows the same range of confidence of the model developed here, in terms of the tendency of the curves and even the absolute values.

DOI: 10.1016/j.ijheatmasstransfer.2009.12.001
Zitationen: 24
Web of Science
Zitationen: 20
Zugehörige Institution(en) am KIT Fachgebiet Strömungsmaschinen (FSM)
Karlsruher Institut für Technologie (KIT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2010
Sprache Englisch
Identifikator ISSN: 0017-9310
KITopen-ID: 1000017902
Erschienen in International Journal of Heat and Mass Transfer
Band 53
Heft 7-8
Seiten 1473-1482
Nachgewiesen in Web of Science
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