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Energetic Comparison of Linear Fresnel and Parabolic Trough Collector Systems

Schenk, Heiko and Hirsch, Tobias and Feldhoff, Jan Fabian and Wittmann, Michael (2012) Energetic Comparison of Linear Fresnel and Parabolic Trough Collector Systems. ASME 2012 6th International Conference on Energy Sustainability, 23. - 26. Juli. 2012, San Diego, USA.

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Abstract

Within the last years, Linear Fresnel (LF) collector systems have been developed as a technical alternative to parabolic trough collector (PT) systems. In the past, LF systems focused on low- and medium temperature applications. Nowadays, LF systems equipped with vacuum receivers can be operated at the same temperatures as PT systems. Papers about the technical and economical comparison of specific PT and LF systems have already been published, [1-3]. However, the present paper focuses on the systematic differences in optical and thermodynamic performance and the impact on the economic figures In a first step the optical performance of typical PT and LF solar fields has been examined, showing the differences during the course of the day and annually. Furthermore, the thermodynamic performance, depending on the operating temperature, has been compared. In a second step, the annual electricity yield of typical PT and LF plants are examined. Solar Salt has been chosen as heat transfer fluid. Both systems utilize the same power block and storage type. Solar field size, storage capacity, and power block electrical power are variable, while all examined configurations achieve the same annual electricity yield. As expected for molten salt systems, both systems are the most cost-effective with large storage capacities. The lower thermodynamic performance of the LF system requires a larger solar field and lower specific costs in order to be competitive. Assuming specific PT field costs of 300 €/m² aperture, the break-even costs of the LF system with Solar Salt range between 202 and 235 €/m², depending on the site and storage capacity. Keywords: linear Fresnel, parabolic trough,

Item URL in elib:https://elib.dlr.de/78095/
Document Type:Conference or Workshop Item (Speech)
Title:Energetic Comparison of Linear Fresnel and Parabolic Trough Collector Systems
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schenk, HeikoHeiko.Schenk (at) dlr.deUNSPECIFIED
Hirsch, Tobiastobias.hirsch (at) dlr.dehttps://orcid.org/0000-0003-0063-0128
Feldhoff, Jan FabianJan.Feldhoff (at) dlr.dehttps://orcid.org/0000-0003-1636-5429
Wittmann, MichaelMichael.Wittmann (at) dlr.deUNSPECIFIED
Date:July 2012
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:linear Fresnel, parabolic trough, system comparison, solar thermal power plant, thermal energy storage, solar field cost, molten salt
Event Title:ASME 2012 6th International Conference on Energy Sustainability
Event Location:San Diego, USA
Event Type:international Conference
Event Dates:23. - 26. Juli. 2012
Organizer:ASME
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Linienfokussierende Systeme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Linienfokussierende Systeme
Deposited By: Schenk, Heiko
Deposited On:06 Dec 2012 17:45
Last Modified:31 Jul 2019 19:37

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