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Numerical simulation and experimental analysis of a modular storage system for direct steam generation

Stückle, Andreas and Laing, Doerte and Müller-Steinhagen, Hans (2014) Numerical simulation and experimental analysis of a modular storage system for direct steam generation. Heat Transfer Engineering, 35 (9), pp. 812-821. Tayler & Francis. DOI: 10.1080/01457632.2013.828556 ISSN 0145-7632

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Official URL: http://dx.doi.org/10.1080/01457632.2013.828556

Abstract

Thermal energy storage is a key technology for the commercialization of solar thermal power plants. This paper gives an overview of a coupled system comprised of concrete regenerators and latent heat storages for direct steam generation, as developed by the German Aerospace Center. Methodologies for an effective transient numerical description of the heat conduction processes inside the single modules and in the whole storage system are presented and their validity is proven by experiments. The presented process has a nominal system pressure of 105.6/80.0 bar for charging/discharging; the corresponding boiling temperatures are 315/295◦C. As storage material of the latent heat storage, sodium nitrate with a melting point of 305◦C is applied. With the presented models, a prediction of the storage system’s temperatures, capacities, and effectiveness is possible. As a result, the design of a 1000-MWhth storage system is presented.

Item URL in elib:https://elib.dlr.de/113334/
Document Type:Article
Title:Numerical simulation and experimental analysis of a modular storage system for direct steam generation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stückle, Andreasandreas.stueckle (at) dlr.deUNSPECIFIED
Laing, Doertedoerte.laing (at) dlr.deUNSPECIFIED
Müller-Steinhagen, HansUNSPECIFIEDUNSPECIFIED
Date:2014
Journal or Publication Title:Heat Transfer Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:35
DOI :10.1080/01457632.2013.828556
Page Range:pp. 812-821
Publisher:Tayler & Francis
ISSN:0145-7632
Status:Published
Keywords:direct steam Generation, numerical simulation
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: Johnson, Maike
Deposited On:20 Jul 2017 12:58
Last Modified:06 Sep 2019 15:16

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