Large Deformation Plate Bending with Application to Solar Collectors

UTSePress Research/Manakin Repository

Search UTSePress Research

Advanced Search


My Account

Show simple item record Watterson, Peter en_US Savvides, Nick en_US Lovatt, Howard en_US
dc.contributor.editor Prasad D & Morrison G (Co-Chairs) en_US 2010-05-28T10:01:09Z 2010-05-28T10:01:09Z 2008 en_US
dc.identifier 2009001748 en_US
dc.identifier.citation Watterson Peter, Savvides Nick, and Lovatt Howard 2008, 'Large Deformation Plate Bending with Application to Solar Collectors', International Solar Energy Society, Freiburg, Germany, pp. 1-10. en_US
dc.identifier.issn 978-0-646-50593-0 en_US
dc.identifier.other E1UNSUBMIT en_US
dc.description.abstract In a typical trough solar collector, a reflective sheet is shaped by a set of ribs with parabolic cutouts. This paper proposes the alternative simple construction method of pushing a thin elastic plate inwards on opposite edges, allowing the plate to adopt its minimum bending energy shape. Analytical solutions are derived for the shape, parameterised by the tangent angle at the plate edges. The limiting shape for a small bend is shown to be a cosine, even up to 15o edge angle. For edge angle between 40o and 52o, the shape is remarkably close to a parabola, differing by less than 2% of the shape height. Measured profiles of a thin metal strip accurately follow the analytic curves ? see figure below. The ability of the shape to focus parallel light by reflection is assessed. For circular section collectors, the maximum concentration factor (trough width to collector diameter catching all reflected light) is 26 for edge angle 53o and the collector centre dropped by 0.163 of the trough width. For planar collectors, the maximum factor is not as high, only 8.2, achieved in the small bend limit with the collector well above the trough. The results are also relevant to solar trough collectors shaped by ribs, since minimum distortion between the ribs will be obtained by using edge compression and edge angles in the range around 35o ? 55o, to give a free shape which is close to parabolic, thus needing minimal tuning by the ribs en_US
dc.language en_US
dc.publisher International Solar Energy Society en_US
dc.relation.isbasedon NA en_US
dc.title Large Deformation Plate Bending with Application to Solar Collectors en_US
dc.parent Third International Solar Energy Society Conference - Asia-Pacific Region, Sydney en_US
dc.journal.volume en_US
dc.journal.number en_US
dc.publocation Freiburg, Germany en_US
dc.identifier.startpage 1 en_US
dc.identifier.endpage en_US
dc.identifier.endpage 10 en_US FEIT.School of Elec, Mech and Mechatronic Systems en_US
dc.conference Verified OK en_US
dc.for 091400 en_US
dc.personcode 900329 en_US
dc.personcode 0000059235 en_US
dc.personcode 0000059234 en_US
dc.percentage 100 en_US Other Technology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom International Solar Energy Society Conference en_US 20081125 en_US
dc.location.activity Sydney, Australia en_US
dc.description.keywords NA en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record