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CFD Simulation and Performance Analysis of Alternative Designs for High-Temperature Solid Particle Receivers

Khalsa, Siri Sahib S. and Christian, Joshua M. and Kolb, Gregory J. and Röger, Marc and Amsbeck, Lars and Ho, Clifford K. and Siegel, Nathan P. and Moya, Adam C. (2011) CFD Simulation and Performance Analysis of Alternative Designs for High-Temperature Solid Particle Receivers. In: Proceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference, ESFuelCell2011. ASME. ASME 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference, ESFuelCell2011, August 7-10, 2011, Washington, DC, USA.

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Abstract

Direct-absorption solid particle receivers are theoretically capable of yielding temperatures in excess of 1000°C, which enables higher efficiency power cycles and lower thermal storage costs. This paper presents rigorous CFD simulations of alternative solid particle receiver designs with recirculation to help identify optimal configurations that maximize the receiver thermal efficiency. The alternative receiver designs considered are a north-facing cavity receiver and a face-down surround-field cavity receiver. The CFD simulations model incident solar radiation from a heliostat field as a boundary condition on the model domain. The CFD simulations also couple convective flow with the thermal and discrete-phase (particle) solutions, which in turn affects absorption of incident solar radiation and thermal re-radiation within the receiver. The receivers are optimized to yield comparable particle temperatures at the outlets of 750-850°C, heated from an injection temperature of 300°C, and are compared on the basis of thermal efficiency. The CFD simulations yielded thermal efficiencies of the north-facing receiver at 72.3% (losses were 6.5% radiative and 20.9% convective) and the face-down receiver at 78.9% (losses were 11.4% radiative and 9.6% convective) at solar noon on March 22. Ongoing efforts are focused on reducing convective and radiative losses from both receiver configurations.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:CFD Simulation and Performance Analysis of Alternative Designs for High-Temperature Solid Particle Receivers
Authors:
AuthorsInstitution or Email of Authors
Khalsa, Siri Sahib S.SNL
Christian, Joshua M.SNL
Kolb, Gregory J.SNL
Röger, MarcDLR
Amsbeck, LarsDLR
Ho, Clifford K.SNL
Siegel, Nathan P.SNL
Moya, Adam C.SNL
Date:August 2011
Journal or Publication Title:Proceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference, ESFuelCell2011
Refereed publication:No
In ISI Web of Science:No
Publisher:ASME
Status:Published
Keywords:central receiver system, solid particle receiver, high temperature receiver, receiver design
Event Title:ASME 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference, ESFuelCell2011
Event Location:Washington, DC, USA
Event Type:international Conference
Event Dates:August 7-10, 2011
Organizer:ASME
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solare Hochtemperatursysteme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research
Deposited By: Marc Röger
Deposited On:15 Dec 2011 14:14
Last Modified:12 Dec 2013 21:29

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