Experimental Studies on the Thermal Performance of the Balcony-Type Flat-Plate Solar Water Heater

Abstract:

Based on the test methods for solar water heating systems, the unsteady thermal efficiency, the daily thermal efficiency and the daily water temperature rise of the balcony-type solar water heating system with a flat-plate solar collector fixed at a large tilt angle (≥60^o) have been discussed by the experimental test in Kunming. The results indicate that the average daily thermal efficiencies of the solar collector installed at 60^o, 70^o, 80^o and 90^o are around 0.35, 0.39, 0.34 and 0.40. The intercept and the slope of the unsteady thermal efficiency equations are about 0.36~0.44 and 1.62~4.01W·°C^-1·m^-2. The average daily water temperature rise is 25.2°C, 20.1°C, 18.2°C and 17.4°C for the solar collector fixed at 60^o, 70^o, 80^o and 90^o.

• Periodical: Advanced Materials Research (Volumes 953-954)
• Pages: 111-114
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.953-954.111
• Online since: June 2014
• Authors: Sheng Xian Wei*, Fen E Hu, Dong Yu Li, Hui Li
• Keywords: Flat-Plate Solar Collector, Large Tilt Angle, Solar Energy, Thermal Performance

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