Naslov
Comparative review and evaluation of state-of-the- art photovoltaic cooling technologies

Autori
Somayeh Sadegh, Koohestani ; Nižetić, Sandro ; Santamouris, Mattheos

Izvornik
Journal of cleaner production (0959-6526) 406 (2023), 136953; 1-21

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, ostalo

Ključne riječi
Photovoltaics ; Cooling ; Performance ; Efficiency ; Solar energy ; Renewable energy

Sažetak
Photovoltaic systems have a reliable method to generate electrical power from direct solar irradiance. Their efficiency is only up to 20% in real operating circumstances and is affected adversely by the inevitable temperature rise in their surface. Passive, active or combined cooling methods are applied to reduce operating temperature to a suitable level, depending on specific application. A Great body of literature has been investigating different PV cooling methods and techniques to reach optimized system efficiency and cooling effect. It is critical for both researchers and practitioners to have a thorough understanding and awareness of the most recent advances and existing gaps. Although there are certain review papers in this field, it is necessary to have up-to-date reviews of the most recent progress and research since the previous ones. In the present work, the main focus was to provide a review of the most recent studies and to compare their outcomes to provide a reference for practitioners and researchers. The holistic classification and evaluation of all the possible cooling technologies were provided in order to draw a comparison between various cooling approaches. Based on the analysis obtained, cooling techniques can ensure improvement in electrical efficiency in a range from 1% to 53% with expected decrease in the photovoltaic panel's surface operating temperature from 1.8 °C to 46 °C. It was also found that spectrum filtering and jet impingement indicated highly remarkable enhancements. The other factors, such as the size of the examined photovoltaic panel, photovoltaic technology, as well as climate circumstances have a strong impact on the cooling performance besides the selection of the specific coolant. The necessity for integral evaluation (performance, economic and environmental) of cooling techniques was also identified as key issue. Previous article in issueNext article in issue Keywords PhotovoltaicsCoolingPerformanceEfficiencySolar energyRenewable energy 1. Introduction Meeting cities' energy demands in the era of climate change is one of the most critical challenges of our time. As a result of climate change and global warming, energy consumption has increased (Santamouris et al., 2001, 2015) and on the other hand, conventional energy supply contributes directly to the current trend of global warming and greenhouse gas emissions (Edenhofer et al., 2011). Renewable energy resources are recognized to be the most dependable options to address this problem, such as solar energy. Solar energy is an omnipresent and endless source of electrical and thermal power. Photovoltaic systems are the most efficient technologies for extracting electrical energy from direct solar irradiance and have gained increasing popularity over the last decades (Dwyer and TeskeRenewables, 2018 ; Grubišić-Čabo et al., 2016). They account for more than half (60%) of the world's renewable energy resource and are estimated to surge up by 2026 (IEA and IEA, 2021). Fig. 1 clearly indicates the great proportion of solar PV systems in the renewables and the potential growth of them soon to be the leading renewable power of the future.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne tehničke znanosti

POVEZANOST RADA