An air-based corrugated cavity-receiver for solar parabolic trough concentrators
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Bader, Roman; Pedretti , Andrea; Barbato, Maurizio; Steinfeld, Aldo
Description
A tubular cavity-receiver that uses air as the heat transfer fluid is evaluated numerically using a validated heat transfer model. The receiver is designed for use on a large-span (9 m net concentrator aperture width) solar parabolic trough concentrator. Through the combination of a parabolic primary concentrator with a nonimaging secondary concentrator, the collector reaches a solar concentration ratio of 97.5. Four different receiver configurations are considered, with smooth or V-corrugated...[Show more]
dc.contributor.author | Bader, Roman | |
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dc.contributor.author | Pedretti , Andrea | |
dc.contributor.author | Barbato, Maurizio | |
dc.contributor.author | Steinfeld, Aldo | |
dc.date.accessioned | 2016-02-24T22:42:09Z | |
dc.identifier.issn | 0306-2619 | |
dc.identifier.uri | http://hdl.handle.net/1885/98960 | |
dc.description.abstract | A tubular cavity-receiver that uses air as the heat transfer fluid is evaluated numerically using a validated heat transfer model. The receiver is designed for use on a large-span (9 m net concentrator aperture width) solar parabolic trough concentrator. Through the combination of a parabolic primary concentrator with a nonimaging secondary concentrator, the collector reaches a solar concentration ratio of 97.5. Four different receiver configurations are considered, with smooth or V-corrugated absorber tube and single or double-glazed aperture window. The collector’s performance is characterized by its optical efficiency and heat loss. The optical efficiency is determined with the Monte Carlo ray-tracing method. Radiative heat exchange inside the receiver is calculated with the net radiation method. The 2D steady-state energy equation, which couples conductive, convective, and radiative heat transfer, is solved for the solid domains of the receiver cross-section, using finite-volume techniques. Simulations for Sevilla/Spain at the summer solstice at solar noon (direct normal solar irradiance: 847 W m2 , solar incidence angle: 13.9) yield collector efficiencies between 60% and 65% at a heat transfer fluid temperature of 125 C and between 37% and 42% at 500 C, depending on the receiver configuration. The optical losses amount to more than 30% of the incident solar radiation and constitute the largest source of energy loss. For a 200 m long collector module operated between 300 and 500 C, the isentropic pumping power required to pump the HTF through the receiver is between 11 and 17 kW. | |
dc.publisher | Pergamon Press | |
dc.source | Applied Energy | |
dc.title | An air-based corrugated cavity-receiver for solar parabolic trough concentrators | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 138 | |
dc.date.issued | 2014 | |
local.identifier.absfor | 091305 - Energy Generation, Conversion and Storage Engineering | |
local.identifier.ariespublication | u5117155xPUB46 | |
local.type.status | Published Version | |
local.contributor.affiliation | Bader, Roman, College of Engineering and Computer Science, ANU | |
local.contributor.affiliation | Pedretti , Andrea, ETH Zurich | |
local.contributor.affiliation | Barbato, Maurizio, Via Croce | |
local.contributor.affiliation | Steinfeld, Aldo, ETH Zurich | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.startpage | 337 | |
local.bibliographicCitation.lastpage | 345 | |
local.identifier.doi | 10.1016/j.apenergy.2014.10.050 | |
local.identifier.absseo | 850505 - Solar-Thermal Electric Energy | |
local.identifier.absseo | 850506 - Solar-Thermal Energy | |
dc.date.updated | 2016-06-14T09:11:48Z | |
local.identifier.scopusID | 2-s2.0-84920067561 | |
Collections | ANU Research Publications |
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