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Comparative experiment study on photovoltaic and thermal solar system under natural circulation of water.

Author(s) : HE W., ZHANG Y., JI J.

Type of article: Article

Summary

The hybrid photovoltaic and thermal (PV/T) system can utilize solar energy more effectively and has a higher total efficiency compared with a traditional solar collecting system and a photovoltaic (PV) module. However, there is limited experimental data on how much energy the PV/T system can save when operating with same area of a PV plate and a solar collector simultaneously. In this paper, a comparative test rig had been set up to measure and analyze the performance of PV/T system. There were monocrystalline silicon PV/T solar collector, a traditional solar collector and a monocrystalline silicon photovoltaic plate. The PV/T collector and the traditional solar collector had the same collecting areas and solar cell covered area of the PV/T collector was the same as the area of the photovoltaic plate. The experimental results showed that the daily thermal efficiency of PV/T system was about 40%, which was about 75% of that for a traditional solar thermosiphon system, and the daily average electrical efficiency was found about 10%, which was a little lower than the photovoltaic module. But primaryenergy saving efficiency of the PV/T system was much higher than that of the individual PV plate and the traditional solar collector.

Details

  • Original title: Comparative experiment study on photovoltaic and thermal solar system under natural circulation of water.
  • Record ID : 30005330
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 31 - n. 16
  • Publication date: 2011/11
  • DOI: http://dx.doi.org/10.1016/j.applthermaleng.2011.06.021

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