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The CellFlux Storage Concept for Increased Flexibility in Sensible Heat Storage

Odenthal, Christian and Steinmann, Wolf-Dieter and Eck, Markus (2015) The CellFlux Storage Concept for Increased Flexibility in Sensible Heat Storage. Energy Procedia, 73, pp. 244-253. Elsevier. DOI: doi:10.1016/j.egypro.2015.07.681 ISSN 1876-6102

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Official URL: http://www.sciencedirect.com/science/article/pii/S1876610215014496

Abstract

Packed beds using air at atmospheric pressure as heat transferring medium are the most cost effective systems for sensible heat storage. The basic idea of the CellFlux concept is to apply this concept also for liquid and/or pressurized primary HTFs by the introduction of an intermediate working fluid cycle. A heat exchanger is used for transferring energy between the primary HTF and the intermediate air cycle which eventually transfers the energy to a packed bed. The CellFlux concept can be implemented by using standard components. Essential is the minimization of efficiency losses resulting from the circulation of the air as well as the heat transfer processes within the heat exchanger and the storage volume. Some example cost estimations for the heat exchanger are given. The feasibility of the CellFlux concept has been proven by a pilot scale test facility operated at a maximum temperature of 380 °C and 100 kW. A novel approach promising further cost reductions has been applied by realizing a horizontal flow direction. Results from the theoretical and experimental analysis of the CellFlux concept will be presented. Distinctive for the CellFlux concept is the flexibility regarding working fluid (thermal oil, molten salt, pressurized water, CO2), temperature range (0-800 °C), power (kW-multi MW) and storage medium (rocks, clinker bricks, concrete). This allows a wide range of applications. An example for application in combined heat and power will be given.

Item URL in elib:https://elib.dlr.de/96600/
Document Type:Article
Title:The CellFlux Storage Concept for Increased Flexibility in Sensible Heat Storage
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Odenthal, ChristianTTUNSPECIFIED
Steinmann, Wolf-DieterTTUNSPECIFIED
Eck, MarkusTTUNSPECIFIED
Date:June 2015
Journal or Publication Title:Energy Procedia
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:73
DOI :doi:10.1016/j.egypro.2015.07.681
Page Range:pp. 244-253
Publisher:Elsevier
ISSN:1876-6102
Status:Published
Keywords:CellFlux, Sensible Thermal Ennergy Storage
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Energy-efficient Processes (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Odenthal, Christian
Deposited On:02 Dec 2015 08:28
Last Modified:06 Sep 2019 15:22

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