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Energy, exergy and efficiency of four photovoltaic thermal collectors with different energy storage material
摘要： Hybrid photovoltaic thermal (PV/T) is a technology with many variations and designs. The aim of this unit is cooling down PV temperature while producing hot water. In this paper, different PV/T designs are compared in terms of energy, exergy and efficiency. Data from experiments and numerical calculations conducted at Bangi, Malaysia was used for the comparisons. The proposed systems were tested in outdoor conditions. The designs in question are water-based PV/T, water-based PV/T with PCM tank, nanofluid-based PV/T with nano-PCM tank and conventional PV module. Effect of mass flow rate and solar irradiance are emphasized in this paper. The highest thermal efficiency, thermal energy and electrical exergy produced are found for PV/T with nanofluids and nano-PCM with around 72%, 14 kW and 76.152, respectively. All PV/T systems proposed exhibit better performance than the conventional PV module. These findings highlight the utility of PV/T technology and its massive potential to energize and popularize the solar energy field.
关键词： Nanofluids,PV/T,Nano-PCM,Exergy,Efficiency
更新于2025-09-19 17:13:59
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Evaluation and Design Criteria of Photovoltaic Thermal (PV/T)
摘要： More interesting research in the field of photovoltaic thermal is being conducted widely due to shifting interest in supplying both electrical and thermal needs especially in areas that suffer from small installation space. Photovoltaic thermal (PV/T) offers to produce both electricity and thermal power from solar irradiance within the same area; therefore, saving up space & other costs directed to installation. Moreover, various techniques & types have been studied and implemented to improve PV/T’s performance and combined efficiency. The aim of this paper is to review the fundamentals of this technology, current works in the field and show innovative designs of PV/T to illuminate the way forward for the technology for globe-wide recognition. Nanofluid and nano-PCM based PV/T collector was found to produce the highest efficiency among other types in tropical climate conditions. The performance evaluation criteria for this system was presented and explained. It is recommended to amend the current design by simplifying it for better use in building integrated applications and for residential consumers.
关键词： Photovoltaic thermal,Combined efficiency,PV/T,Nanofluid,Nano-PCM,Renewable energy,Solar energy
更新于2025-09-16 10:30:52