SOĞUK İKLİM KOŞULLARI ALTINDA YARIM HÜCRELİ BİR FOTOVOLTAİK MODÜLÜN DENEYSEL İNCELENMESİ

This study experimentally investigates the real-time

performance of a half-cut monocrystalline photovoltaic (PV) module under cold

climatic conditions in Erzurum, Türkiye. The effects of snowy and sunny days on

solar irradiance, panel surface temperature, wind speed, and system performance

were comparatively analyzed using energy and exergy approaches. The results

indicate that although solar irradiance values were lower on snowy days, the

significantly reduced ambient and module temperatures effectively limited

thermal losses. The panel surface temperature on snowy days remained

considerably lower than that of sunny days, which contributed positively to

electrical performance. According to the experimental results, the energy

efficiency was calculated as 0.185 for the snowy day and 0.132 for the sunny

day, corresponding to an increase of approximately 40.15% under snowy

conditions. Similarly, the exergy efficiency was found to be 0.197 for the

snowy day and 0.141 for the sunny day, indicating an improvement of about

39.72%. Despite lower irradiance levels, the higher efficiency values obtained

on snowy days can be attributed to reduced thermal losses and the reflective

effect of snow (albedo), which enhances the effective solar input. The findings

demonstrate that cold and high-altitude regions can provide highly favorable

operating conditions for photovoltaic systems, particularly when evaluated from

both energy and exergy perspectives. <o:p></o:p>