Institute for Energy Studies, Department of Mechanical Engineering, Anna University, Chennai, 600025, India.
Environ Sci Pollut Res Int. 2021 Apr;28(15):19351-19366. doi: 10.1007/s11356-020-12104-0. Epub 2021 Jan 4.
The present work represents a detailed performance analysis of a 5-kW on-grid solar photovoltaic rooftop system installed on a flat roof of a hospital building at a height of 12 m from the ground level, located at Perambalur (latitude 11° 23' N and longitude 78° 93' E), Tamilnadu, India. The daily, monthly and annual average performance parameters of the PV system including energy output, final yield, reference yield, array yield, photovoltaic array efficiency, system efficiency, inverter efficiency, performance ratio and capacity utilization factor have been analysed. The environmental benefit analysis and the payback period of the installed solar photovoltaic plant are also discussed. This solar photovoltaic power plant generates around 7144 kWh per annum of electrical energy, which is fed into the grid, and the annual average array, inverter, system efficiency, capacity utilization factor and performance ratio of the plant are found to be 12.15%, 97.12%, 11.72%, 16.31% and 76.83%, respectively, during the year 2019. The overall PV module electrical efficiency has been increased by 1.21% by applying the forced air circulation mechanism and 2.31% by applying the forced water circulation mechanism. Subsequently, the heat gained by the system can be utilized for heat load application. The installed solar photovoltaic power plant has a positive impact on greenhouse gas emissions with a reduction of 11.287 t of CO, 8.86 kg of SO, 18.50 kg of NO and 485.792 kg of ash per annum. The water-based cooling in photovoltaics can potentially generate an output energy of 7310 kWh, which is relatively higher than the energy generated by the photovoltaic module with air cooling.
本工作对安装在印度泰米尔纳德邦 Perambalur（北纬 11°23'N，东经 78°93'E，地面以上 12 米高的医院建筑平屋顶上的 5kW 并网太阳能光伏屋顶系统进行了详细的性能分析。分析了光伏系统的日、月和年平均性能参数，包括能量输出、最终产量、参考产量、阵列产量、光伏阵列效率、系统效率、逆变器效率、性能比和容量利用率。还讨论了安装的太阳能光伏电站的环境效益分析和投资回收期。该太阳能光伏电站每年可产生约 7144kWh 的电能，并输入电网，在 2019 年，该电站的年平均阵列、逆变器、系统效率、容量利用率和性能比分别为 12.15%、97.12%、11.72%、16.31%和 76.83%。通过应用强制空气循环机制，整体光伏模块电效率提高了 1.21%，通过应用强制水循环机制，整体光伏模块电效率提高了 2.31%。随后，系统获得的热量可用于热负荷应用。安装的太阳能光伏电站对温室气体排放有积极影响，每年减少 11.287tCO、8.86kgSO、18.50kgNO 和 485.792kg 灰。基于水的光伏冷却技术有潜力产生 7310kWh 的输出能量，相对高于基于空气冷却的光伏组件产生的能量。
