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Comparison of different safety concepts for evaluation of molten salt receivers

Binder, Matthias and Schuhbauer, Christian and Uhlig, Ralf and Schwarzbözl, Peter and Schwaiger, Ruth and Pitz-Paal, Robert (2022) Comparison of different safety concepts for evaluation of molten salt receivers. Solar Energy, 234, pp. 119-127. Elsevier. doi: 10.1016/j.solener.2022.01.051. ISSN 0038-092X.

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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0038092X22000627?via%3Dihub


Solar power tower plants are a promising technology for renewable energy supply, because of their base load capability. Nevertheless, this type of power plant is in competition with various other technologies. In order to ensure the competitiveness of power tower plants, there are several approaches to reduce investment and operating costs. Huge amounts of these costs are defined in the lifetime calculation of the solar receiver. For this purpose, based on ASME BPVC Section III Division 5 (Nuclear Code), a number of safety concepts have been developed in the last decades, which are adapted to solar applications using reduced conservatism. However, a generally established approach has not yet been developed. Therefore, this study introduces a novel approach that makes it possible to directly compare the different safety concepts on the level of permissible strains and stresses. The comparison with these so-called interaction maps illustrates the range of variation of the allowable strains (factor of 1.5) and stresses (factor of 2.2), depending on the applied safety concept. Ultimately, a preferred method is identified that is both easy to apply, since it relies on generally available material data, and economically advantageous compared to the approach defined in the Nuclear Code. Additionally, it is demonstrated that the interaction maps can also be used for preliminary design of the receiver components. A change of the absorber material from the currently used nickel-based alloys to the significantly more cost-effective stainless steels offers options for an economically advantageous design, especially in the regions of low receiver temperatures. Introduction

Item URL in elib:https://elib.dlr.de/189857/
Document Type:Article
Title:Comparison of different safety concepts for evaluation of molten salt receivers
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schwaiger, RuthInstitute of Energy and Climate Research (IEK), Forschungszentrum JuelichUNSPECIFIEDUNSPECIFIED
Pitz-Paal, RobertUNSPECIFIEDhttps://orcid.org/0000-0002-3542-3391UNSPECIFIED
Date:1 March 2022
Journal or Publication Title:Solar Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 119-127
EditorsEmailEditor's ORCID iDORCID Put Code
Pitchumani, RangaVirginia Tech Research Center Department of Mechanical EngineeringUNSPECIFIEDUNSPECIFIED
Keywords:Solar Power Tower Plant,
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 SW - Solar and Wind Energy
DLR - Research theme (Project):E - Advanced Heat Transfer Media
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Power Plant Technology
Institute of Solar Research > Leitungsbereich SF KP
Institute of Solar Research > Solar High Temperature Technologies
Deposited By: Pitz-Paal, Robert
Deposited On:09 Nov 2022 09:35
Last Modified:09 Nov 2022 09:35

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