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Heat Transfer in Moving Bed Heat Exchangers for High Temperature Thermal Energy Storage.

Bartsch, Philipp and Zunft, Stefan (2017) Heat Transfer in Moving Bed Heat Exchangers for High Temperature Thermal Energy Storage. American Institute of Physics. SolarPACES 2016, 11.-14. Okt. 2016, Abu Dhabi, Vereinigte Arabische Emirate. DOI: 10.1063/1.4984425

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Abstract

Heat transfer inside a moving bed heat exchanger (M BHX) is closely investigat ed. For this purpose a novel simulation model has been developed whose results are comp ared to experimental data and theoretical predictions ('penetration theory'). While the penetration theory clea rly underestimates heat transfer inside the MBHX, the simulation model shows good agreem ent with the experimental da ta, especially at low flow speeds. This result indicates that areas which are supposed to have negligible contribution to heat transfer have in fact to be taken into account and that a precise modelling of the flow field is necessary. Furthermore, it is found th at the range of operating velocities of the MBHX lie in an intermediate flow regime where neither the thermal contact resistance from the wall to the first layer of particles nor the thermal penetration re sistance of the bulk can be neglected.

Item URL in elib:https://elib.dlr.de/115919/
Document Type:Conference or Workshop Item (Poster)
Title:Heat Transfer in Moving Bed Heat Exchangers for High Temperature Thermal Energy Storage.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bartsch, Philippphilipp.bartsch (at) dlr.deUNSPECIFIED
Zunft, Stefanstefan.zunft (at) dlr.deUNSPECIFIED
Date:June 2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.1063/1.4984425
Publisher:American Institute of Physics
Series Name:AIP Conference Proceedings
Status:Published
Keywords:Moving Bed Heat Exchanger, CSP, solarthermische Kraftwerke, Thermal Energy Storage, Wärmespeicher, granulare Medien, erneuerbare Energien, Partikelwärmeübertrager
Event Title:SolarPACES 2016
Event Location:Abu Dhabi, Vereinigte Arabische Emirate
Event Type:international Conference
Event Dates:11.-14. Okt. 2016
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Thermal Energy Storage
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes (Storage)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Bartsch, Philipp
Deposited On:01 Dec 2017 14:11
Last Modified:01 Dec 2017 14:11

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