Impact of Dish Structure on the Convective Heat Loss From a Parabolic Dish Solar Cavity Receiver

Simple item page
aut.relation.conference2016 Asia-Pacific Solar Research Conferenceen_NZ
aut.researcherAnderson, Timothy
dc.contributor.authorUzair, Men_NZ
dc.contributor.authorAnderson, Ten_NZ
dc.contributor.authorNates, Ren_NZ
dc.date.accessioned2018-12-19T00:52:01Z
dc.date.available2018-12-19T00:52:01Z
dc.date.copyright2016-11-28en_NZ
dc.date.issued2016-11-28en_NZ
dc.description.abstractParabolic dish cavity receivers achieve higher operating temperatures by using higher concentration ratios from larger dish structures, which in turn incur greater costs. Many studies have focused on understanding the heat loss from the cavity receiver in order to accurately predict the technical and hence economic performance of these systems. However, there is a lack of work on the influence of the dish structure on the wind and its subsequent effect on convective heat loss from the receiver. Hence, this work investigated the heat losses from a coupled dish-cavity receiver system. Convective heat losses from a cavity receiver (with a coupled dish) were determined numerically using computational fluid dynamics (CFD) for various wind directions and dish-receiver orientations. The heat losses were assessed considering wind velocities from 0 to 20 m/s, together with a range of wind incidence angles and dish tilt angles. The results show that the dish orientation in the flow field has a significant impact on the convective heat loss. It was found that at wind velocities less than 3m/s, the convective heat loss was lower than the natural convection heat loss (at 0 m/s). Further, the results indicate a significant reduction in heat loss (of between 15% to 40 % for winds between 3 m/s to 20 m/s) when including the presence of dish structure, compared to its absence. This finding highlights the need to consider the dish structure in the determination of thermal performance of these systems in order to avoid over design and excessive cost.en_NZ
dc.identifier.citationProceedings of the Asia Pacific Solar Research Conference 2016, Publisher: Australian PV Institute, Editors: R. Egan and R. Passey, Dec 2016, ISBN: 978-0- 6480414-0-5
dc.identifier.urihttps://hdl.handle.net/10292/12123
dc.publisherAustralian PV Instituteen_NZ
dc.relation.urihttp://apvi.org.au/solar-research-conference/en_NZ
dc.rightsAuthors retain the right to place his/her publication version of the work on a personal website or institutional repository for non commercial purposes. The definitive version was published in (see Citation). The original publication is available at (see Publisher’s Version).
dc.rights.accessrightsOpenAccessen_NZ
dc.titleImpact of Dish Structure on the Convective Heat Loss From a Parabolic Dish Solar Cavity Receiveren_NZ
dc.typeConference Contribution
pubs.elements-id219447
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Design & Creative Technologies
pubs.organisational-data/AUT/Design & Creative Technologies/Engineering, Computer & Mathematical Sciences
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Anderson - Impact of dish structure on the convective heat loss from a parabolic dish solar cavity receiver.pdf
Size:
333.6 KB
Format:
Adobe Portable Document Format
Description:
Conference Contribution
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
RE4.10 Grant of Licence.docx
Size:
14.05 KB
Format:
Microsoft Word 2007+
Description:
Download
Collections
School of Engineering, Computer and Mathematical Sciences - Te Kura Mātai Pūhanga, Rorohiko, Pāngarau