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Moving Bed Heat Exchanger for Solar Central Receiver Power Plants: A multi-phase model and parameter variations

Baumann, Torsten and Zunft, Stefan (2012) Moving Bed Heat Exchanger for Solar Central Receiver Power Plants: A multi-phase model and parameter variations. SolarPACES2012, 11.-14. Sept., Marrakech.

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Abstract

Sensible solid media storage based on particulate materials is a promising concept for solar central receiver systems. The bulk material can be used as heat transfer and storage medium at high temperatures. A new heat exchanger concept based on the principles of a moving bed has been developed deploying a compact design, a good part-load behaviour and low parasitic loads. Numerical investigations applying a multiphase CFD approach are conducted in order to identify the determining factors on heat transfer. In a subsequent design study, the tube shape as well as the tube arrangement is varied in order to identify a design improving the thermal performance of the device. A circular tube geometry is found to be the most economic one compared to rhombs or ovals. A narrow tube arrangement taking into account the flow properties of the bulk offers a potentially higher thermal efficiency and an even more compact design of the heat exchanger.

Item URL in elib:https://elib.dlr.de/77035/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Moving Bed Heat Exchanger for Solar Central Receiver Power Plants: A multi-phase model and parameter variations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Baumann, Torstentorsten.baumann (at) dlr.deUNSPECIFIED
Zunft, Stefanstefan.zunft (at) dlr.deUNSPECIFIED
Date:2012
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:Moving Bed, Heat Exchanger, multiphase flow, CFD, CSP, TES
Event Title:SolarPACES2012
Event Location:Marrakech
Event Type:international Conference
Event Dates:11.-14. Sept.
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Baumann, Dr.Ing. Torsten
Deposited On:18 Dec 2012 17:56
Last Modified:15 Jan 2013 14:18

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