Optimum operating temperature for evacuated tube solar collectors

Paper

Kamel, Fouad. 2002. "Optimum operating temperature for evacuated tube solar collectors." 40th Annual Conference of the Australian and New Zealand Solar Energy Society (Solar02): Solar Harvest. Newcastle, Australia 25 Nov - 02 Dec 2002 Frenchs Forest, Australia.
Paper/Presentation Title

Optimum operating temperature for evacuated tube solar collectors

Presentation TypePaper
Authors
AuthorKamel, Fouad
Journal or Proceedings Title40th Annual Conference of the Australian and New Zealand Solar Energy Society (Solar02): Program & Papers
Number of Pages6
Year2002
Place of PublicationFrenchs Forest, Australia
Web Address (URL) of Paperhttp://www.anzses.org/
Conference/Event40th Annual Conference of the Australian and New Zealand Solar Energy Society (Solar02): Solar Harvest
Event Details
40th Annual Conference of the Australian and New Zealand Solar Energy Society (Solar02): Solar Harvest
Event Date
25 Nov 2002 to end of 02 Dec 2002
Event Location
Newcastle, Australia
Abstract

[Abstract]: The domestic evacuated tube solar collector (ETC) can easily achieve during its operation
relatively high water temperature levels approaching 100 oC. Operating the collector at such high temperatures induce considerable losses in form of latent heat working to evaporate the water into steam and excessive heat losses due to the wide difference to the ambient
temperature. This paper presents an analysis based on field measurments taken over a prolonged field test aiming to identify the impact of water-discharge temperature on the performance of the subject ETC. Ways of improving collector efficiency and energy yield by adjusting the water-discharge temperature are discussed. During the assessment the water temperature has been set at different levels from 25 to 98 oC before being discharged to the
user.

Keywordsevacuated tube solar heaters, operating temperature, collector efficiency
ANZSRC Field of Research 2020401703. Energy generation, conversion and storage (excl. chemical and electrical)
Public Notes

File reproduced in accordance with the copyright policy of the publisher/author.

Byline AffiliationsSouthern Institute of Technology, New Zealand
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