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Operation strategies for falling particle receivers

Gobereit, Birgit and Amsbeck, Lars and Buck, Reiner (2013) Operation strategies for falling particle receivers. 7th International Conference on Energy Sustainability, 14.-19- July 2013, Minneapolis, USA.

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Abstract

Solar thermal tower power plants with a falling particle receiver are a promising concept for large scale electricity generation. To yield high power plant efficiencies, particle outlet temperatures of 800 °C or more are desired, to drive a high efficiency power block. Different design parameters and operation strategies have been assessed with an advanced CFD-Model. In this CFD-Model all significant physical effects are included and therefore the simulations can provide detailed information about the receiver efficiency and the different receiver losses. With this CFD model different operation strategies have been assessed. A falling particle receiver with 394 MW thermal design power was evaluated with different operating strategies, assuming a temperature increase from 300 °C to 800 °C and a face-down cavity configuration. Simulation results indicate that receiver efficiencies in excess of 90 % can be reached. In the simulated test case the receiver efficiency in part load (50 % solar input) increases with three recirculations by 16 % compared to the case with no recirculation. Thus the receiver efficiency is calculated to be higher than 80% even in 50 % part load. Different recirculation options are also discussed.

Item URL in elib:https://elib.dlr.de/85888/
Document Type:Conference or Workshop Item (Speech)
Title:Operation strategies for falling particle receivers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gobereit, BirgitBirgit.Gobereit (at) dlr.dehttps://orcid.org/0000-0002-1952-9209
Amsbeck, Larslars.amsbeck (at) dlr.deUNSPECIFIED
Buck, Reinerreiner.buck (at) dlr.deUNSPECIFIED
Date:2013
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:particle receivers, concentrated solar power (CSP) , direct absorption receiver (DAR), high temperatures receiver
Event Title:7th International Conference on Energy Sustainability
Event Location:Minneapolis, USA
Event Type:international Conference
Event Dates:14.-19- July 2013
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 - Punktfokussierende Systeme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Punktfokussierende Systeme
Deposited By: Uhlig, Tamara
Deposited On:28 Nov 2013 13:48
Last Modified:11 Jan 2018 13:30

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