Optimum operating temperature for evacuated tube solar collectors

Kamel, Fouad (2002) Optimum operating temperature for evacuated tube solar collectors. In: 40th Annual Conference of the Australian and New Zealand Solar Energy Society (Solar02): Solar Harvest, 25 Nov - 2 Dec 2002, Newcastle, Australia.

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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.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Deposited with permission of publisher.
Depositing User: Dr Fouad Kamel
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Electrical, Electronic and Computer Engineering
Date Deposited: 21 Apr 2008 23:29
Last Modified: 02 Jul 2013 23:01
Uncontrolled Keywords: evacuated tube solar heaters, operating temperature, collector efficiency
Fields of Research (FOR2008): 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering
URI: http://eprints.usq.edu.au/id/eprint/4087

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