Photovoltaic/thermal systems based on concentrating and non-concentrating technologies: Working fluids at low, medium and high temperatures

RENEWABLE & SUSTAINABLE ENERGY REVIEWS

卷:137

Article

Lamnatou, Chr.¹  Vaillon, R.²  Parola, S.²  Chemisana, D.¹ 

[1] Univ Lleida, Environm Sci Dept, Appl Phys Sect, Jaume II 69, Lleida 25001, Spain

[2] Univ Montpellier, IES, CNRS, Montpellier, France

关键词: Photovoltaic/thermal (PVT) systems;    Low-temperature applications;    Medium-temperature applications;    High-temperature applications;    Technologies with/without solar concentration;    Buildings;    Industry;    Power plants;   

DOI  :  10.1016/j.rser.2020.110625

来源: Elsevier

【 摘 要 】

The present article provides an overview about photovoltaic/thermal systems categorised by the temperature of the working fluid: Low-temperature (lower than 60 degrees C), medium-temperature (between 60 and 90 degrees C) and high-temperature (higher than 90 degrees C). Concerning photovoltaic/thermal-air systems for low-temperature use, the majority of studies involve building-integrated non-concentrating systems with phase change materials and working-fluid temperatures at around 30-55 degrees C. Concerning low-temperature photovoltaic/thermal-water systems, a large number of studies are about non-concentrating configurations appropriate for building-integrated and, in general, domestic applications with working fluids at approximately 50-60 degrees C. Regarding non-concentrating photovoltaic/thermal systems for medium-temperature use, a large number of references are appropriate for industrial and domestic applications (working fluids: air; water) with around 60-70 degrees C working-fluid temperatures. The literature review about medium-temperature concentrating photovoltaic/thermal systems shows that the majority of investigations concern photovoltaic/thermal-water systems with concentration ratios up to 190X and working fluids at approximately 62-90 degrees C, appropriate for domestic and water-desalination applications. As for high-temperature concentrating photovoltaic/thermal systems, most of them have concentration ratios up to 1000X, involve parabolic concentrators and use water (as the working fluid) at around 100-250 degrees C. Moreover, in the field of high-temperature photovoltaic/thermal systems, most of the configurations are appropriate for building and industrial applications, and consist of triple-junction or silicon-based photovoltaic/thermal cells. In light of the issues mentioned above, a critical discussion and key challenges (in terms of materials, efficiencies, technologies, etc.) are presented.

【 授权许可】

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