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在光效、工作原理、价格、发展趋势等方面将LED光源同其他常用道路照明光源进行比较,论证了LED作为太阳能路灯的光源是否合理。分析了光伏电池发电同太阳辐射之间的关系,路灯的运行特点,计算出独立运行的太阳能路灯光伏组件的季节性损失,通过查找文献得到光伏组件由于其他不利因素而导致的损失,得出太阳能光伏组件的最终利用率,进而计算出其在全寿命周期内的能量回收期。由计算结果得出独立运行的太阳能路灯光伏组件利的用率过低,能量回收期过长,独立运行的太阳能路灯并不节能。
In the light efficiency, working principle, price, trends and other aspects of the LED light source with other commonly used road lighting compared to demonstrate the LED as a light source of solar street light is reasonable. The relationship between solar cell power generation and solar radiation is analyzed. The operation characteristic of street lamp is analyzed. The seasonal loss of solar street light module is calculated. By searching the literature, the loss of solar cell module due to other unfavorable factors is obtained. The final utilization of PV modules, and then calculate its energy recovery period of the entire life cycle. The calculation results show that the solar modules operating independently are of low utilization rate and long energy recovery period, and the solar street lamps that are operated independently can not save energy.