SOĞUK İKLİM KOŞULLARI ALTINDA YARIM HÜCRELİ BİR FOTOVOLTAİK MODÜLÜN DENEYSEL İNCELENMESİ

<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:justify;line-height:normal"><span style="font-size:12.0pt;font-family:&quot;Times New Roman&quot;,serif;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-language:TR">This study experimentally investigates the real-timeperformance of a half-cut monocrystalline photovoltaic (PV) module under coldclimatic conditions in Erzurum, Türkiye. The effects of snowy and sunny days onsolar irradiance, panel surface temperature, wind speed, and system performancewere comparatively analyzed using energy and exergy approaches. The resultsindicate that although solar irradiance values were lower on snowy days, thesignificantly reduced ambient and module temperatures effectively limitedthermal losses. The panel surface temperature on snowy days remainedconsiderably lower than that of sunny days, which contributed positively toelectrical performance. According to the experimental results, the energyefficiency was calculated as 0.185 for the snowy day and 0.132 for the sunnyday, corresponding to an increase of approximately 40.15% under snowyconditions. Similarly, the exergy efficiency was found to be 0.197 for thesnowy day and 0.141 for the sunny day, indicating an improvement of about39.72%. Despite lower irradiance levels, the higher efficiency values obtainedon snowy days can be attributed to reduced thermal losses and the reflectiveeffect of snow (albedo), which enhances the effective solar input. The findingsdemonstrate that cold and high-altitude regions can provide highly favorableoperating conditions for photovoltaic systems, particularly when evaluated fromboth energy and exergy perspectives.&nbsp;<o:p></o:p></span>