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Simulation model for the transient process behaviour of solar aluminium recycling in a rotary kiln

Alexopoulos, Spiros and Roeb, Martin and Dersch, Jürgen and Pitz-Paal, Robert (2015) Simulation model for the transient process behaviour of solar aluminium recycling in a rotary kiln. Applied Thermal Engineering, 78, pp. 387-396. Elsevier. doi: doi:10.1016/j.applthermaleng.2015.01.007. ISSN 1359-4311.

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The German Aerospace Center has developed a process concept for the solar thermal recycling of solid residues and waste materials in a commercial scale and applied this concept to the production of secondary aluminium. In this context a mathematical model for the simulation of the unsteady-state behaviour of a solar heated rotary kiln has been developed, which is used to figure out the specifics of the solar boundary conditions like intermittent insolation and at least one start-up period per day as well as for process design purposes. This model is also capable to simulate hybrid and conventionally fossil heated processes in rotary kilns. The model was adapted and validated by recycling experiments using a rotary kiln in mini-plant scale heated by a solar furnace. Subsequent experimental results were in good agreement with the data predicted by the transient calculations. Taking this as a basis the model was applied to predict a possible operation concept for a stand-alone plant operated solar-only at El Paso, Texas. An important step for further design studies was the calculation of the overall efficiency and the number of cycles feasible at representative days in such a plant. In a representative parameter studies the influence of geometrical kiln parameters on the efficiency and cycle duration of the batch process was investigated.

Item URL in elib:https://elib.dlr.de/94793/
Document Type:Article
Title:Simulation model for the transient process behaviour of solar aluminium recycling in a rotary kiln
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Alexopoulos, Spirosalexopoulos (at) sij.fh-aachen.deUNSPECIFIED
Roeb, MartinMartin.roeb (at) dlr.deUNSPECIFIED
Dersch, Jürgenjuergen.dersch (at) dlr.deUNSPECIFIED
Pitz-Paal, Robertrobert.pitz-paal (at) dlr.deUNSPECIFIED
Date:5 March 2015
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :doi:10.1016/j.applthermaleng.2015.01.007
Page Range:pp. 387-396
Keywords:Aluminium; Melting; Recycling; Solar; Rotary kiln Aluminium Melting Recycling
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solar Process Technology (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solare Verfahrenstechnik
Deposited By: Roeb, Dr.rer.nat. Martin
Deposited On:24 Mar 2015 13:57
Last Modified:06 Sep 2019 15:16

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