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Hydrogen generation in CSP plants and maintenance of DPO/BP heat transfer fluids – A simulation approach

Kuckelkorn, Thomas und Jung, Christian und Gnädig, Tim und Lang, Christoph und Schall, Christina (2016) Hydrogen generation in CSP plants and maintenance of DPO/BP heat transfer fluids – A simulation approach. In: AIP Conference Proceedings 1734, Seiten 90002-1. American Institute of Physics. SolarPACES 2015, 2015-10-13 - 2015-10-16, Cape Town, South Africa. doi: 10.1063/1.4949187. ISBN 978-0-7354-1386-3.

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Offizielle URL: http://aip.scitation.org/doi/pdf/10.1063/1.4949187

Kurzfassung

The ageing of diphenyl oxide/ biphenyl (DPO/BP) Heat Transfer Fluids (HTFs) implies challenging tasks for operators of parabolic trough power plants in order to find the economic optimum between plant performance and O&M costs. Focusing on the generation of hydrogen, which is effecting from the HTF ageing process, the balance of hydrogen pressure in the HTF is simulated for different operation scenarios. Accelerated build-up of hydrogen pressure in the HTF is causing increased permeation into the annular vacuum space of the installed receivers and must be avoided in order to maintain the performance of these components. Therefore, the effective hydrogen partial pressure in the HTF has to be controlled and limited according to the specified values so that the vacuum lifetime of the receivers and the overall plant performance can be ensured. In order to simulate and visualize the hydrogen balance of a typical parabolic trough plant, initially a simple model is used to calculate the balance of hydrogen in the system and this is described. As input data for the simulation, extrapolated hydrogen generation rates have been used, which were calculated from results of lab tests performed by DLR in Cologne, Germany. Hourly weather data, surface temperatures of the tubing system calculated by using the simulation tool from NREL, and hydrogen permeation rates for stainless steel and carbon steel grades taken from literature have been added to the model. In a first step the effect of HTF ageing, build-up of hydrogen pressure in the HTF and hydrogen loss rates through piping and receiver components have been modeled. In a second step a selective hydrogen removal process has been added to the model. The simulation results are confirming the need of active monitoring and controlling the effective hydrogen partial pressure in parabolic trough solar thermal power plants with DPO/BP HTF. Following the results of the simulation, the expected plant performance can only be achieved over lifetime, if the hydrogen partial pressure is actively controlled and limited.

elib-URL des Eintrags:https://elib.dlr.de/112770/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Hydrogen generation in CSP plants and maintenance of DPO/BP heat transfer fluids – A simulation approach
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Kuckelkorn, ThomasSchott Solar CSPNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Jung, ChristianChristian.Jung (at) dlr.dehttps://orcid.org/0000-0002-5893-4979NICHT SPEZIFIZIERT
Gnädig, TimSchott Solar CSPNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Lang, ChristophDow EuropeNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Schall, ChristinaSchott Solar CSPNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2016
Erschienen in:AIP Conference Proceedings 1734
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.1063/1.4949187
Seitenbereich:Seiten 90002-1
Verlag:American Institute of Physics
ISBN:978-0-7354-1386-3
Status:veröffentlicht
Stichwörter:CSP, hydrogen formation, heat transfer fluid
Veranstaltungstitel:SolarPACES 2015
Veranstaltungsort:Cape Town, South Africa
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:13 Oktober 2015
Veranstaltungsende:16 Oktober 2015
HGF - Forschungsbereich:Energie
HGF - Programm:Materialien und Technologien für die Energiewende
HGF - Programmthema:Chemische Energieträger
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SW - Solar- und Windenergie
DLR - Teilgebiet (Projekt, Vorhaben):E - Solare Brennstoffe
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Solarforschung
Hinterlegt von: Jung, Dr.rer.nat. Christian
Hinterlegt am:22 Aug 2019 09:57
Letzte Änderung:24 Apr 2024 20:17

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