Sohar University, PO Box 44, Sohar, PCI 311, Oman.
Solar Energy Research Institute, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
Environ Sci Pollut Res Int. 2022 Dec;29(59):88788-88802. doi: 10.1007/s11356-022-21958-5. Epub 2022 Jul 15.
Solar cells are considered one of the most important and widespread solar applications in the world. However, the performance of the PV modules is significantly affected by the dust in the air. This paper, therefore, presents a comparison of an outdoor experimental study of dust effect on monocrystalline, and polycrystalline photovoltaic (PV) modules. For analysis, four 100 W PVs were installed horizontally in Sohar, Oman. For each pair of PV modules, one was left dusty due to environmental impact, and the second was cleaned daily. PV performance and environmental parameter measurements were conducted every 30 min for 35 days. The effects of dust on current, voltage, power, and energy were discussed in terms of time and normalized values. Also, cleaning methods were tested to determine the optimum one. It is found that power degradation of monocrystalline (20%) is higher compared with polycrystalline (12%) due to dust accumulation. For monocrystalline, the current, voltage, and power losses ranged between 10.0-24.0%, 2.0-3.5%, and 14.0-31.0%, respectively. However, for polycrystalline, the degradation rates were 16.88-27.92%, 0.455-0.455%, and 17.14-28.1% for current, voltage, and power losses after exposure to outdoor conditions for the same period, respectively. The dust accumulation on the PV surface found after 5 weeks is 0.493 mg/cm, which can be considered the lowest accumulation rate compared to other Gulf countries, but which, however, leads to less energy degradation as well. It is found that water is sufficient to clean PV in the study area. However, sodium detergent as a cleaner introduced better results compared to water, especially when there is high pollution in the location.
太阳能电池被认为是世界上最重要和应用最广泛的太阳能应用之一。然而，光伏组件的性能会受到空气中灰尘的显著影响。因此，本文对户外实验研究灰尘对单晶和多晶光伏组件的影响进行了比较。为了分析，在阿曼的苏哈尔安装了四个 100W 的光伏。对于每对光伏组件，一个由于环境影响而积尘，另一个则每天清洁。对光伏性能和环境参数进行了每 30 分钟一次的测量，共进行了 35 天。从时间和归一化值两个方面讨论了灰尘对电流、电压、功率和能量的影响。还测试了清洁方法，以确定最佳方法。结果发现，由于灰尘堆积，单晶（20%）的功率衰减比多晶（12%）更高。对于单晶，电流、电压和功率损失分别在 10.0-24.0%、2.0-3.5%和 14.0-31.0%之间。然而，对于多晶，在暴露于户外条件相同时间后，电流、电压和功率损失的降解率分别为 16.88-27.92%、0.455-0.455%和 17.14-28.1%。在 5 周后发现光伏表面的灰尘堆积为 0.493mg/cm，与其他海湾国家相比，这可以被认为是最低的堆积率，但这也导致了能量的减少。结果发现，在研究区域，水足以清洁光伏。然而，与水相比，钠清洁剂作为清洁剂带来了更好的效果，尤其是在该地区污染严重时。
