Experimental Studies on the Thermal Performance of the Wall-Type All-Glass Evacuated Tube Solar Water Heater

Abstract:

Based on the test methods for solar water heating systems, the useful energy output, water temperature rise and thermal efficiency of the wall-type all-glass evacuated tube collectors fixed at a large tilt angle (≥60^o) have been conducted by the experimental test in Kunming. The results show that the average thermal efficiency varies from 35% to 50%, the useful energy output decreases from 13.1MJ to 8.8MJ and the water temperature rise decreases from 31.3 °Cto 20.9°C when the tilt angle increases from 60^o to 90^o. These results can provide some useful experimental data support for the application of the all-glass evacuated tube solar collector integrated into the wall of the high-rise buildings.

• Periodical: Advanced Materials Research (Volumes 953-954)
• Pages: 115-118
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.953-954.115
• Online since: June 2014
• Authors: Sheng Xian Wei*, Fen E Hu, You Ming Shi, Cui Qiong Yan
• Keywords: All-Glass Evacuated Tube Solar Collector, Large Tilt Angle, Solar Energy, Thermal Performance

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