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Techno-economic heat transfer optimization of large scale latent heat energy storage systems in solar thermal power plants

Hübner, Stefan and Eck, Markus and Stiller, Christoph and Seitz, Markus (2016) Techno-economic heat transfer optimization of large scale latent heat energy storage systems in solar thermal power plants. Applied Thermal Engineering, 98. Elsevier. DOI: doi:10.1016/j.applthermaleng.2015.11.026 ISSN 1359-4311

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Abstract

Concentrated solar power plants with integrated storage systems are key technologies for sustainable energy supply systems and reduced anthropogenic CO2-emissions. Developing technologies include direct steam generation in parabolic trough systems, which offer benefits due to higher steam temperatures and, thus, higher electrical efficiencies. However, no large scale energy storage technology is available yet. A promising option is a combined system consisting of a state-of-the art sensible molten salt storage system and a high temperature latent heat thermal energy storage system (LHTESS). This paper discusses the systematic development and optimization of heat transfer structures in LHTESS from a technological and economic point of view. Two evaluation parameters are developed in order to minimize the specific investment costs. First, the specific product costs determine the optimum equipment of the latent heat storage module, i.e. the finned tube. The second parameter reflects the interacting behavior of the LHTESS and the steam turbine during discharge. This behavior is described with a simplified power block model that couples both components.

Item URL in elib:https://elib.dlr.de/102180/
Document Type:Article
Title:Techno-economic heat transfer optimization of large scale latent heat energy storage systems in solar thermal power plants
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hübner, StefanLinde AGUNSPECIFIED
Eck, MarkusHochschule OsnabrückUNSPECIFIED
Stiller, ChristophLinde AGUNSPECIFIED
Seitz, Markusmarkus.seitz (at) dlr.deUNSPECIFIED
Date:2016
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:98
DOI :doi:10.1016/j.applthermaleng.2015.11.026
Publisher:Elsevier
ISSN:1359-4311
Status:Published
Keywords:Latent heat storage, Phase change material, Heat transfer enhancement, Direct steam generation
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Thermal Energy Storage
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemical Processes (Storage) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Seitz, Markus
Deposited On:20 Jan 2016 09:17
Last Modified:06 Sep 2019 15:16

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