Performance of Thermosyphon Solar Water Heaters in Series

• Main Authors: Tsong-Sheng Lee, Keh-Chin Chang, Kung-Ming Chung, Yi-Mei Liu
• Format: Article
• Language: English
• Published: MDPI AG 2012-08-01
• Series: Energies
• Subjects: thermosyphon solar water heater; temperature stratification; water draw profile; thermal performance
• Online Access: http://www.mdpi.com/1996-1073/5/9/3266

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.