研究目的
Investigating the enhancement of solar panel output through low-concentration optical enhancement in both dry and humid climates.
研究成果
Low-concentration optical enhancement is effective in both dry and tropical climates, with higher and more repeatable performance gains in dry climates due to the dominance of direct sunlight. Simple air-cooling was found to increase power output by 10%. Future studies should include simultaneous acquisition of panel temperature, wind, humidity, and solar insolation measurements to establish a linear relationship between sunlight concentration and output power enhancement.
研究不足
The effectiveness of low-concentration optical enhancement methods based on reflective optics is less in tropical climates due to the combination of direct and diffused sunlight. Rapid fluctuations in temperature, solar insolation, and humidity in tropical climates make it difficult to acquire consistently repeatable measurements.
1：Experimental Design and Method Selection:
Outdoor experiments were conducted to evaluate solar panel power enhancement using Fresnel mirror setups. Mirror to panel size ratios and reflection angles were chosen to effectively illuminate the entire panel area during peak daylight hours.
2：Sample Selection and Data Sources:
Custom-designed solar panels with mono-crystalline Si solar cells and commercially purchased panels were used. Data acquisition involved measuring voltage and current as a function of resistance across the panel output.
3：List of Experimental Equipment and Materials:
Flat glass mirrors with 70% reflectance, commercially available electronics load power supply, personal computer with LABVIEW software for control and data acquisition.
4：Experimental Procedures and Operational Workflow:
Solar panels were tested with and without mirror reflectors. Current and voltage were measured simultaneously as a function of resistance to determine panel parameters.
5：Data Analysis Methods:
The response of current as a function of voltage was plotted to determine relevant panel parameters including output power, maximum voltage, short-circuit current, open-circuit voltage, series and shunt resistance, and fill factor.
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