研究目的
To evaluate the influence of an anti-fouling nano-coating on the electrical energy production of photovoltaic modules and assess its economic feasibility.
研究成果
The nano-coating increases PV energy production by up to 1.82% initially, decreasing to 0.69% after five months due to aging. An average annual gain of 0.6% is estimated. Currently, the economic gain (0.43 €/m2) does not offset the coating cost (1 €/m2), but large-scale application could reduce costs and improve feasibility, especially in high-solar-radiation regions.
研究不足
The monitoring campaigns were limited to nine days each due to multimeter data storage constraints. The coating's performance degradation over time and variability in weather conditions may affect generalizability. Economic analysis is specific to the local context and may not apply universally.
1：Experimental Design and Method Selection:
The study involved comparing two sub-arrays of a PV power plant—one treated with a nano-coating and one untreated—to evaluate energy production gains. Data were collected over two nine-day monitoring campaigns with a time step of two minutes.
2：Sample Selection and Data Sources:
The PV plant used 21 Linuo LN 230P polycrystalline modules split into two sub-arrays (10 and 11 modules) located in Modena, Italy. Solar radiation was measured using a pyranometer, and electrical parameters were measured with multimeters.
3：List of Experimental Equipment and Materials:
Equipment included a Delta Ohm HD2102.2 luxmeter with pyranometer, Metrix MTX3293 multimeters, and the Sketch Co., Ltd. nano-coating composed of silica, tin oxide, titanium oxide, platinum, methanol, and water.
4：2 luxmeter with pyranometer, Metrix MTX3293 multimeters, and the Sketch Co., Ltd. nano-coating composed of silica, tin oxide, titanium oxide, platinum, methanol, and water.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Both arrays were cleaned with water and detergent; only the 11-module array was coated. Monitoring campaigns were conducted immediately after coating application and five months later. Data on solar radiation, current, and voltage were recorded and post-processed to calculate normalized energy and efficiency.
5：Data Analysis Methods:
Data were integrated to compute energy production, normalized by peak power, and efficiency gains were calculated using statistical methods. A technical-economical analysis was performed based on energy gains and costs.
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