| Summary: | 碩士 === 國立高雄應用科技大學 === 模具工程系碩士班 === 101 === When solar cell modules exposure to sunlight, only a few part of the radiation can converted into electrical energy. Most of the radiation is converted into heat energy causes temperature increase on solar cell and decrease efficiency of power generation. Presently solar cell modules can be applied extensively in all kinds of vehicles, building shape and structure art form, in order to enhance the value of design. Although solar cell module can show different appearance curvatures laying style. However, for a total generating capacity of solar cell may be affected by sunlight at different angles lead to lower power generation efficiency. In this study, we use outdoor wind tunnel measurements and numerical simulations in two ways, studies thermo-fluid characteristics and generation efficiency of photovoltaic cells on curved surface.
Experimental part in three different curvature angles (curvature angle, β = 5 °, 8 °, 10 °) to the test modules and the module will be into the open-loop inhaled wind tunnel test section, adjust to different wind speed (V = 5 m/s, 8 m/s, 10 m/s). In order to simulate solar cell modules at different forced convection due to temperature affect power generation efficiency. In addition, not only study the solar cells at different curvature to obtaining the relationship between average heat convection coefficient and wind speed. Also, analysis of different curvature solar cell relationships between thermal-fluid characteristics and generation efficiency at sunlight different angles.
The results show that solar cell temperature dropping as the wind speed rise. When the wind speed is larger, the heat convection coefficient also become faster. It's shows that the wind take away the better the effect of heat energy, when the heat convection coefficient is larger. According to the research when the test modules faced the sun by the curvature angle increases, the temperature rise 1℃ and it’s output power is reduced by approximately 0.06%. Also, thermo-fluid characteristics and generation efficiency photovoltaic cells on curved surface, β = 10° of heat convection coefficient is larger. At the same environmental conditions, β = 5° of the solar cell module power generation efficiency is better. When the power generation is higher, curvature solar cell does not show higher of heat convection coefficient and still need to consider the impact of solar irradiation angle.
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