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Virtual Solar Field - Validation of a detailed transient simulation tool for line focus STE fields with single phase heat transfer fluid

Noureldin, Kareem and Hirsch, Tobias and Pitz-Paal, Robert (2017) Virtual Solar Field - Validation of a detailed transient simulation tool for line focus STE fields with single phase heat transfer fluid. Solar Energy (146), pp. 131-140. Elsevier. DOI: 10.1016/j.solener.2017.02.028 ISSN 0038-092X

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Official URL: http://dx.doi.org/10.1016/j.solener.2017.02.028

Abstract

Simulation models enable designers and operators to test different settings of the real systems while avoiding the large costs associated with experimental or practical systems. However, creating models that resemble the real physical system with acceptable accuracy and computational time remains a challenge for developers of such tools. With this motivation, a new simulation tool, the Virtual Solar Field (VSF), has been developed for line-focus power plants with single-phase heat transfer fluid (HTF) to assist in plant control during transient processes. VSF is a whole-field model based on an efficient coupling of hydraulic and thermal solvers that take into account the flow distribution in the parallel loops, as well as the transient conditions in the field. In this paper, some validation cases for VSF using data from Andasol-3 power plant are shown. Five test cases are examined, which include normal operation, start-up and evening operation during clear-sky and strong transients. The results show very good agreement with the real plant and some discrepancies are discussed and studied. The main sources of discrepancies are associated with difficulties in modelling all fine details of reality using the current technologies in some commercial power plants. For example, small cloud passage are not detected by the few weather stations in the power plant, as well as knowing the exact loop valve settings is not possible in Andasol-3. In addition, an overview of the potential applications of VSF are mentioned and briefly discussed. VSF offers a suitable platform for testing novel control strategies and assessing the performance of the solar fields

Item URL in elib:https://elib.dlr.de/111372/
Document Type:Article
Title:Virtual Solar Field - Validation of a detailed transient simulation tool for line focus STE fields with single phase heat transfer fluid
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Noureldin, Kareemkareem.noureldin (at) dlr.dehttps://orcid.org/0000-0003-3833-2425
Hirsch, Tobiastobias.hirsch (at) dlr.dehttps://orcid.org/0000-0003-0063-0128
Pitz-Paal, Robertrobert.pitz-paal (at) dlr.dehttps://orcid.org/0000-0002-3542-3391
Date:April 2017
Journal or Publication Title:Solar Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.solener.2017.02.028
Page Range:pp. 131-140
Publisher:Elsevier
ISSN:0038-092X
Status:Published
Keywords:CSP; Transient model; Simulation; Line-focus; Optimization
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Advanced Heat Transfer Media (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Linienfokussierende Systeme
Deposited By: Noureldin, Kareem
Deposited On:22 May 2017 14:57
Last Modified:07 Feb 2020 14:48

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