dc.contributor.author | Johnsen, Håkon Jarand Dugstad | |
dc.contributor.author | Aksnes, Astrid | |
dc.contributor.author | Torgersen, Jan | |
dc.date.accessioned | 2021-01-11T13:09:59Z | |
dc.date.available | 2021-01-11T13:09:59Z | |
dc.date.created | 2021-01-10T14:41:07Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 0146-9592 | |
dc.identifier.uri | https://hdl.handle.net/11250/2722402 | |
dc.description.abstract | Line-focus solar concentrators are commonly designed by extruding a two-dimensional concentrator in the third dimension. For concentration in air, these concentrators are, by the nature of their design, limited by the two-dimensional solar concentration limit of 212×. This limit is orders of magnitude lower than the 45000× concentration limit for three-dimensional solar concentrators. Through the use of étendue squeezing, we conceptually show that it is possible to design line-focus solar concentrators beyond this 2D limit. This allows a concentrator to benefit from a line focus suitable for heat extraction through a tubular receiver, while reaching concentration ratios and acceptance angles previously unseen for line-focus concentrators. We show two design examples, achieving simulated 75× concentration and 218× concentration ratios, with a ±1∘ acceptance angle. For comparison, the 2D concentration limit is 57× at this acceptance angle. Étendue-squeezing line-focus solar concentrators, combined with recent developments in tracking integration, may enable the development of a new class of concentrated solar power systems | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Optical Society of America | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Beyond the 2D limit: étendue-squeezing line-focus solar concentrators | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.journal | Optics Letters | en_US |
dc.identifier.doi | 10.1364/OL.406280 | |
dc.identifier.cristin | 1868325 | |
dc.description.localcode | © 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |