Experiment on increasing solar radiation for building by using “Smart Mirror”

ABSTRACT The mode of solar energy utilization includes PV, solar heating，hot water and so on, but it is difficult to improve the utilization rate nowadays. Using computer technology, a Smart Mirror was developed and installed on the roof of a building in Beijing, and related experiments have been carried out during 2017–2018. The results show that the device can reflect 48.6% of the solar radiation and 17.4% of ultraviolet into the building in winter. The utilization rate can reach over 194% of the traditional modes. Its efficiency is equivalent to 41.4% of the southward window of the building. Natural lighting is also improved significantly. Based on the “central diversion,” “wind moment counteract” and “prestressing,” its stability, structural strength and accuracy meet the application needs. Graphical Abstrac