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The additional heat flux due to adhesion at a partially immersed rotating drum heat exchanger for latent heat storage

Tombrink, Jonas and Jung, Erik and Bauer, Dan (2021) The additional heat flux due to adhesion at a partially immersed rotating drum heat exchanger for latent heat storage. In: Journal of Physics: Conference Series, 1 (2144), 012097. IOP Publishing. 8th European Thermal Sciences Conference (EUROTHERM 2021), 20.-22. Sep. 2021, Virtual. doi: 10.1088/1742-6596/2116/1/012097. ISSN 1742-6588.

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Official URL: https://iopscience.iop.org/issue/1742-6596/2116/1

Abstract

Latent heat storages can be used to store thermal energy at a constant temperature. By actively removing the solidified phase change material from the heat exchanger surface during the discharge process, the heat flux can be kept constant and a separation of power and capacity is possible. In the presented rotating drum concept, a cooled drum is partially immersed in a tub of liquid phase change material and rotates in it. Phase change material solidifies at the submerged part of the drum. In addition, adhering liquid phase change material solidifies after the surface has left the tub. In this paper, the additional heat transfer due to adhesion is examined by determining the solidified layer thickness as well as the heat transfer by comparing measurements with adhesion and while eliminating the adhesion with a rubber lip. The measured adhering layer thickness differs by 33% from a presented analytical approach. The transferred heat is increased up to 26 % due to the adhesion.

Item URL in elib:https://elib.dlr.de/147803/
Document Type:Conference or Workshop Item (Speech)
Title:The additional heat flux due to adhesion at a partially immersed rotating drum heat exchanger for latent heat storage
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Tombrink, JonasJonas.Tombrink (at) dlr.dehttps://orcid.org/0000-0002-8600-1236
Jung, ErikErik.Jung (at) dlr.deUNSPECIFIED
Bauer, DanDan.Bauer (at) dlr.deUNSPECIFIED
Date:8 December 2021
Journal or Publication Title:Journal of Physics: Conference Series
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:1
DOI :10.1088/1742-6596/2116/1/012097
Page Range:012097
Publisher:IOP Publishing
ISSN:1742-6588
Status:Published
Keywords:Latent Heat Thermal Energy Storage, Rotating Drum, Active Heat Exchanger, PCM, Adhesion, Solidification
Event Title:8th European Thermal Sciences Conference (EUROTHERM 2021)
Event Location:Virtual
Event Type:international Conference
Event Dates:20.-22. Sep. 2021
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Tombrink, Jonas
Deposited On:23 Dec 2021 11:01
Last Modified:25 Jan 2022 11:19

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