Ahmed Nesma Mohamed, Hassan Ahmed Mahrous, Kassem Mohamed Abdelwahab, Hegazi Ahmed Mahmoud, Elsaadawi Youssef Fayez
Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza, Egypt.
Nuclear Research Center, Egyptian Atomic Energy Authority, Inshas, Egypt.
Sci Rep. 2023 Aug 30;13(1):14174. doi: 10.1038/s41598-023-41272-5.
The operation and effectiveness of a solar-powered underground water pumping system are affected by many environmental and technical factors. The impact of these factors must be investigated to be considered when developing these systems and to ensure their dependability. This study evaluated the dependability and performance of photovoltaic water pumping system (PVWPS) under real operating conditions by examining the effects of solar irradiance, panels' temperature, and components' efficiency. From December 2020 to June 2021, experiments were conducted on a 10 hp PVWPS located in Bani Salamah, Al-Qanater-Giza Governorate, Egypt, at latitude 30.3° N, longitude 30.8° E, and 19 m above sea level. The irradiance values reached 755.7, 792.7, and 805.7 W/m at 12:00 p.m. in December, March, and June, respectively. Furthermore, the irradiance has a significant impact on the pump flow rate, as the amount of pumped water during the day reached 129, 164.1, and 181.8 m/day, respectively. The panels' temperatures rose to 35.7 °C, 39.9 °C, and 44 °C, respectively. It was observed that when the temperature rises by 1 degree Celsius, efficiency falls by 0.48%. The average efficiency of photovoltaic solar panels reached its highest value in March (13.8%) and its lowest value in December (13%).
太阳能地下水抽水系统的运行和效能受到许多环境和技术因素的影响。在开发这些系统时，必须对这些因素的影响进行研究，以便加以考虑并确保其可靠性。本研究通过考察太阳辐照度、面板温度和部件效率的影响，评估了光伏抽水系统（PVWPS）在实际运行条件下的可靠性和性能。2020年12月至2021年6月，在埃及盖勒尤卜省宰加济格市巴尼萨拉马的一个10马力光伏抽水系统上进行了实验，该系统位于北纬30.3°、东经30.8°，海拔19米。12月、3月和6月下午12点的辐照度值分别达到755.7、792.7和805.7瓦/平方米。此外，辐照度对泵的流量有显著影响，白天的抽水量分别达到129、164.1和181.8立方米/天。面板温度分别升至35.7℃、39.9℃和44℃。据观察，温度每升高1摄氏度，效率下降0.48%。光伏太阳能板的平均效率在3月达到最高值（13.8%），在12月达到最低值（13%）。
