Thermodynamics assessment on cooling photovoltaic modules by phase change materials (PCMs) in critical operating temperature

摘要: Increasing the temperature of photovoltaic (PV) cells decreases their electricity generation. The use phase change materials (PCMs) is one most common methods for controlling rate increasing PV cells. This research focuses on thermodynamic analysis PV/PCM systems with and without fins in maximum operating modules (85 °C). Polyethylene glycol 600 (PEG-600) paraffin, different melting points, have been studied experimentally as PCM an indoor condition. Moreover, effect using was investigated. For this critical temperature, results showed that paraffin could be better cells, due to its closer point module temperature. In case included, differences 28.0 °C 8.8 °C between paraffin + fin PEG 600 + fin comparison conventional were measured, respectively. At condition, output power a cannot exceed half nominal power. exergy efficiency measured 4.2% more than one. Also, entropy generation calculated reduction up 5% shown variations Rayleigh number proposed cases are too.