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设计了一种可调控亮度的光伏-热通风装置,介绍了装置的结构及工作原理。本装置能够对进入室内的光线实现调节,中午进光量被减弱,而在早晚通过率增加.同时,该装置还能得到部分电力,实现太阳能的电力转化。在实际天气条件下,对装置的性能进行了实验测试,测试了盖板光线透过率随时间的变化,并测试了装置得热量随当日太阳辐照量及当地时间的变化关系.结果表明:装置对空气的加热功率变化趋势与辐照度的变化趋势接近,整个装置在中午时热量利用率最高,可达70%以上.
A kind of photovoltaic - heat ventilation device with adjustable brightness is designed. The structure and working principle of the device are introduced. The device can regulate the light entering the room, and the amount of light entering at noon is weakened, while the passing rate is increased in the morning and evening. At the same time, the device can also obtain partial power to realize the solar power conversion. Under actual weather conditions, the performance of the device was tested experimentally, the cover light transmittance was tested over time, and the relationship between the heat gain of the device and the solar radiation and the local time was tested.The results showed that: The change trend of the heating power of the device to the air is close to that of the irradiance, and the heat utilization rate of the whole device is the highest at noon, reaching more than 70%.