Sökning: L773:0038 092X OR L773:1471 1257 >
Measurement of radi...
-
Adsten, MUppsala universitet,Materialvetenskap
(författare)
Measurement of radiation distribution on the absorber in an asymmetric CPC collector
- Artikel/kapitelEngelska2004
Förlag, utgivningsår, omfång ...
Nummerbeteckningar
-
LIBRIS-ID:oai:lup.lub.lu.se:87af9f1b-e5ae-49fb-860b-bd91a1544ffd
-
https://lup.lub.lu.se/record/288902URI
-
https://doi.org/10.1016/j.solener.2003.08.024DOI
-
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-89751URI
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:art swepub-publicationtype
-
Ämneskategori:ref swepub-contenttype
Anmärkningar
-
A method to estimate the annual collected energy and the annual average optical efficiency factor is suggested. The radiation distribution on the absorber of an asymmetric CPC collector with a flat bi-facial absorber is measured for three different absorber mounting angles using a photo diode. The annual optical efficiency factors and a relative measure of the annual collected energy are determined for collectors with the absorber fin thickness 0.5 and 1 mm, and for a collector with a teflon convection suppression film mounted around the absorber. With the local optical efficiency factors and the annual incident solar energy distribution considered, the analysis indicates that the energy gain for a mounting angle of 20 is higher than for a collector with 65 absorber mounting angle. The annual collected energy is increased with 6-8% if the absorber fin thickness is increased from 0.5 to 1 mm. The annual average optical efficiency factor is relatively independent of the absorber mounting angle. It was found to be 0.87-0.88 for a collector with a 0.5 mm thick absorber fin and 0.92 for a collector with a 1 mm thick absorber fin or for a collector with 0.5 mm thick absorber fin with a teflon convection suppression film added. The low annual average optical efficiency factor is not caused by the uneven irradiance distribution but by the relatively high U-L-values. (C) 2003 Elsevier Ltd. All rights reserved.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Hellström, BengtLund University,Lunds universitet,Avdelningen för Energi och byggnadsdesign,Institutionen för bygg- och miljöteknologi,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Energy and Building Design,Department of Building and Environmental Technology,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ebd-bhe
(författare)
-
Karlsson, B
(författare)
-
Uppsala universitetMaterialvetenskap
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Solar Energy: Elsevier BV76:1-3, s. 199-2060038-092X1471-1257
Internetlänk
Hitta via bibliotek
Till lärosätets databas