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An Approach to DNI Transients Characterization for System Evaluation

Feldhoff, Jan Fabian and Hirsch, Tobias (2016) An Approach to DNI Transients Characterization for System Evaluation. SolarPACES 2016, 11.-14. Okt. 2016, Abu Dhabi, Vereinigte Arabische Emirate.

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Abstract

The direct normal irradiance (DNI) is of utmost importance for concentrated solar power (CSP) plants. For annual yield prediction, a steady-state heat balance is made for each hour of the year or for a smaller time period such as 15 min with the corresponding average DNI value. However, the distribution and short term DNI variations are ignored by this approach. In consequence, there is no information on the transient behavior of the plant and the question remains how the plant is influenced by the DNI disturbance. The paper intends to start a discussion on DNI characterization and its application to CSP. An approach to categorize the DNI behavior from a transient system point of view is presented by using purpose-/system-specific filters. The resulting DNI disturbance or variability classes, respectively, can be used to directly compare different sites and technologies. They might as well be useful for better yield analysis in the future.

Item URL in elib:https://elib.dlr.de/108469/
Document Type:Conference or Workshop Item (Speech)
Title:An Approach to DNI Transients Characterization for System Evaluation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Feldhoff, Jan Fabianjan.feldhoff (at) dlr.deUNSPECIFIED
Hirsch, Tobiastobias.hirsch (at) dlr.deUNSPECIFIED
Date:12 October 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:DNI, disturbance class, variability, yield analysis, CSP, direct steam Generation, system evaluation
Event Title:SolarPACES 2016
Event Location:Abu Dhabi, Vereinigte Arabische Emirate
Event Type:international Conference
Event Dates:11.-14. Okt. 2016
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: Feldhoff, Dr.-Ing. Jan Fabian
Deposited On:01 Dec 2016 19:35
Last Modified:01 Dec 2016 19:35

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