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Energies 2012, 5(9), 3266-3278; doi:10.3390/en5093266
Article

Performance of Thermosyphon Solar Water Heaters in Series

,
* ,
 and
Energy Research Center, National Cheng Kung University, 2500 Section 1, Chung-Cheng South Road, Guiren, Tainan 711, Taiwan
* Author to whom correspondence should be addressed.
Received: 3 July 2012 / Revised: 9 August 2012 / Accepted: 24 August 2012 / Published: 30 August 2012
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Abstract

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.
Keywords: thermosyphon solar water heater; temperature stratification; water draw profile; thermal performance thermosyphon solar water heater; temperature stratification; water draw profile; thermal performance
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Liu, Y.-M.; Chung, K.-M.; Chang, K.-C.; Lee, T.-S. Performance of Thermosyphon Solar Water Heaters in Series. Energies 2012, 5, 3266-3278.

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