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Atmospheric Extinction in Simulation Tools for Solar Tower Plants

Hanrieder, Natalie and Wilbert, Stefan and Schroedter-Homscheidt, Marion and Schnell, Franziska and Mancera Guevara, Diana Rocio and Buck, Reiner and Giuliano, Stefano and Pitz-Paal, Robert (2017) Atmospheric Extinction in Simulation Tools for Solar Tower Plants. In: AIP Conference Proceedings, 140011-1-140011-11. Elsevier. SolarPACES 2016, Abu Dhabi, United Arab Emirates. DOI: 10.1063/1.4984519 ISSN 0094-243X

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Official URL: http://dx.doi.org/10.1063/1.4984519

Abstract

Atmospheric extinction causes significant radiation losses between the heliostat field and the receiver in a solar tower plants. These losses vary with site and time. State of the art is that in ray-tracing and plant optimization tools, atmospheric extinction is included by choosing between few constant standard atmospheric conditions. Even though some tools allow the consideration of site and time dependent extinction data, such data sets are nearly never available. This paper summarizes and compares the most common model equations implemented in several ray-tracing tools. There are already several methods developed and published to measure extinction on-site. An overview of the existing methods is also given here. Ray-tracing simulations of one exemplary tower plant at the Plataforma Solar de Almería (PSA) are presented to estimate the plant yield deviations between simulations using standard model equations instead of extinction time series. For PSA, the effect of atmospheric extinction accounts for losses between 1.6 and 7 %. This range is caused by considering overload dumping or not. Applying standard clear or hazy model equations instead of extinction time series lead to an underestimation of the annual plant yield at PSA. The discussion of the effect of extinction in Tower plants has to include overload dumping. Situations in which overload dumping occurs are mostly connected to high radiation levels and low atmospheric extinction. Therefore it can be recommended that project developers should consider site and time dependent extinction data especially on hazy sites. A reduced uncertainty of the plant yield prediction can significantly reduce costs due to smaller risk margins for financing and EPCs. The generation of extinction data for several locations in form of representative yearly time series or geographical maps should be further elaborated.

Item URL in elib:https://elib.dlr.de/107040/
Document Type:Conference or Workshop Item (Speech)
Title:Atmospheric Extinction in Simulation Tools for Solar Tower Plants
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hanrieder, NatalieNatalie.Hanrieder (at) dlr.dehttps://orcid.org/0000-0002-9671-351X
Wilbert, StefanStefan.Wilbert (at) dlr.dehttps://orcid.org/0000-0003-3573-3004
Schroedter-Homscheidt, Marionmarion.schroedter-homscheidt (at) dlr.dehttps://orcid.org/0000-0002-1854-903X
Schnell, Franziskafranziska.schnell (at) dlr.deUNSPECIFIED
Mancera Guevara, Diana RocioDiana.ManceraGuevara (at) dlr.deUNSPECIFIED
Buck, Reinerreiner.buck (at) dlr.deUNSPECIFIED
Giuliano, StefanoStefano.Giuliano (at) dlr.deUNSPECIFIED
Pitz-Paal, RobertRobert.Pitz-Paal (at) dlr.dehttps://orcid.org/0000-0002-3542-3391
Date:2017
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.1063/1.4984519
Page Range:140011-1-140011-11
Publisher:Elsevier
ISSN:0094-243X
Status:Published
Keywords:CSP, tower plants, atmospheric extinction, simulation, raytracing, attenuation
Event Title:SolarPACES 2016
Event Location:Abu Dhabi, United Arab Emirates
Event Type:international Conference
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 - Impact of Desert Environment (old)
Location: Köln-Porz
Institutes and Institutions:German Remote Sensing Data Center > Atmosphere
Institute of Solar Research > Qualification
Deposited By: Hanrieder, Natalie
Deposited On:01 Dec 2016 19:20
Last Modified:31 Jul 2019 20:04

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