Performance of Thermosyphon Solar Water Heaters in Series

More than a single thermosyphon solar water heater may be employed in applications when considerable hot water consumption is required. In this experimental investigation, eight typical Taiwanese solar water heaters were connected in series. Degree of temperature stratification and thermosyphon flow...

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Bibliographic Details
Published in:Energies (Basel) 2012-09, Vol.5 (9), p.3266-3278
Main Authors: Liu, Yi-Mei, Chung, Kung-Ming, Chang, Keh-Chin, Lee, Tsong-Sheng
Format: Article
Language:English
Subjects:
Alternative energy sources
Cold
Consumption
Efficiency
Heat exchangers
Heaters
Radiation
Resistance thermometers
Solar energy
temperature stratification
thermal performance
thermosyphon solar water heater
water draw profile
Water heaters
Water temperature
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Summary:More than a single thermosyphon solar water heater may be employed in applications when considerable hot water consumption is required. In this experimental investigation, eight typical Taiwanese solar water heaters were connected in series. Degree of temperature stratification and thermosyphon flow rate in a horizontal tank were evaluated. The system was tested under no-load, intermittent and continuous load conditions. Results showed that there was stratification in tanks under the no-load condition. Temperature stratification also redeveloped after the draw-off. Analysis of thermal performance of the system was conducted for each condition.
ISSN:1996-1073
1996-1073
DOI:10.3390/en5093266