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Effects of different greenhouse coverings on energy parameters of a photovoltaic–thermal solar system
摘要： The present study analyzed the power and heat supply of a small-scale greenhouse by a photovoltaic–thermal (PV/T) system while using three greenhouse coverings (glass, plastic and polycarbonate) and four water mass flow rates (0.016, 0.025, 0.033 kg/s and no-flow), with or without a solar tracker. The electrical efficiency results for PV (without mass flow) and PV/T (0.016, 0.025 and 0.033 kg/s) states indicated that the application of the PV/T system enhanced electrical efficiency by 21.5, 28.4 and 36.84% for the glass glazing, by 15.28, 25 and 34.79% for the plastic covering, and by 19.82, 26.67 and 40.25% for the polycarbonate covering, compared to the PV state. The highest overall efficiency was at 0.033 kg/s with 59.9% (glass), 54.56% (plastic) and 47.58% (polycarbonate), and the lowest overall efficiency was at 0.016 kg/s with 41.75% (glass), 32.94% (plastic) and 31.22% (polycarbonate). In general, due to the electrical and thermal energy requirements of greenhouses, it can be said that, in addition to producing electricity by PV/T systems, their significant thermal energy production compared to PV panels can also promote the use of such systems in the future.
关键词： Photovoltaic/thermal,Different greenhouse coverings,Electrical efficiency,Thermal efficiency
更新于2025-09-11 14:15:04
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[IEEE 2018 International conference on computation of power, energy, Information and Communication (ICCPEIC) - Chennai, India (2018.3.28-2018.3.29)] 2018 Internat2018 International Conference on Computation of Power, Energy, Information and Communication (ICCPEIC)ional conference on computation of power, energy, Information and Communication (ICCPEIC) - Solar PV Active and Passive Cooling Technologies - A Review
摘要： This paper emphasizes the current advances in cooling techniques and temperature control of Photovoltaic (PV) panel. The Electrical Efficiency of PV panel can be improved by decreasing the panel temperature using various techniques. Several cooling techniques are employed to solar PV and how this cooling technologies have their impact on solar PV are discussed. This paper gives the comparison of different cooling techniques (dynamic and static) and also gives the suggestion that which type of cooling can be adopted to the solar PV by considering various aspects.
关键词： solar,cooling techniques,PV panels,electrical efficiency,renewable energy,photovoltaics
更新于2025-09-09 09:28:46