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<p>In response to the growing concerns of climate change and fossil fuel depletion, solar photovoltaics (PV) have emerged as a prominent clean energy. However, the efficiency of PV panels is significantly influenced by temperature variations, which can adversely affect their performance and overall energy output. This study explores innovative cooling techniques, including water-based cooling and colour filter applications, to mitigate the impact of temperature fluctuations on PV efficiency. Experimental analysis is conducted under varying mass flow rates and initial water temperatures to assess their effectiveness in improving energy conversion efficiency. The findings provide valuable insights into optimizing PV performance, ensuring enhanced sustainability and reliability in renewable energy applications. This paper investigates three experimental methods aimed at reducing the operating temperature of PV panels and enhancing their efficiency. The study utilizes colour filters and water-based cooling techniques, examining meteorological parameters such as ambient temperature and solar irradiation, as well as output parameters including electrical efficiency, voltage, current, power, and PV panel temperature. The experimental set-up involves cooling the front surface of the PV panel with flowing water and implementing a back surface cooling mechanism using dry grass. Additionally, the impact of colour filters on panel temperature and overall performance is assessed. Comparative tests were conducted on a non-cooled panel and two water-cooled panels, under varying conditions, with mass flow rates ranging from 2 to 4&#xa0;L per minute (LPM) and different initial water temperatures. The results indicate that the lowest operating temperature was achieved with the panel covered by a violet colour filter. At a mass flow rate of 2.5&#xa0;LPM, the average PV/T efficiency ranged from 47 to 77%, with the highest recorded efficiency being 67.16% at a total mass flow rate of 2&#xa0;LPM. These findings underscore the potential of cooling techniques to mitigate temperature-induced efficiency losses in PV systems.</p>

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Experimental techniques for enhancing PV panel efficiency through temperature reduction using water cooling and colour filters

  • 期刊论文

  • 发表日期：

    2025年4月19日

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  • Bibhu Prasad Ganthia,
  • Sampurna Panda,
  • Krishna Priya Remamany,
  • Abhay Chaturvedi,
  • A. Yasmine Begum,
  • G. Mohan,
  • S. J. Suji Prasad,
  • S. Ishwarya

摘要

In response to the growing concerns of climate change and fossil fuel depletion, solar photovoltaics (PV) have emerged as a prominent clean energy. However, the efficiency of PV panels is significantly influenced by temperature variations, which can adversely affect their performance and overall energy output. This study explores innovative cooling techniques, including water-based cooling and colour filter applications, to mitigate the impact of temperature fluctuations on PV efficiency. Experimental analysis is conducted under varying mass flow rates and initial water temperatures to assess their effectiveness in improving energy conversion efficiency. The findings provide valuable insights into optimizing PV performance, ensuring enhanced sustainability and reliability in renewable energy applications. This paper investigates three experimental methods aimed at reducing the operating temperature of PV panels and enhancing their efficiency. The study utilizes colour filters and water-based cooling techniques, examining meteorological parameters such as ambient temperature and solar irradiation, as well as output parameters including electrical efficiency, voltage, current, power, and PV panel temperature. The experimental set-up involves cooling the front surface of the PV panel with flowing water and implementing a back surface cooling mechanism using dry grass. Additionally, the impact of colour filters on panel temperature and overall performance is assessed. Comparative tests were conducted on a non-cooled panel and two water-cooled panels, under varying conditions, with mass flow rates ranging from 2 to 4 L per minute (LPM) and different initial water temperatures. The results indicate that the lowest operating temperature was achieved with the panel covered by a violet colour filter. At a mass flow rate of 2.5 LPM, the average PV/T efficiency ranged from 47 to 77%, with the highest recorded efficiency being 67.16% at a total mass flow rate of 2 LPM. These findings underscore the potential of cooling techniques to mitigate temperature-induced efficiency losses in PV systems.