| With the significant growth of the global floor area and occupants’lighting demand,the energy consumption of indoor lighting has increased dramatically.Based on the increasing shortage of energy and the innovative development of energy-saving technology,solar energy has a useful application prospect in building lighting and green lighting.In order to solve the problem of green lighting in low energy buildings,based on the technical characteristics of optical fiber lighting and photovoltaic energy storage,this paper studied and designed a light-guided lighting system with high efficiency concentrating transmission and low energy healthy lighting.Then,the optical effect test was performed,and the design performance of the system was further analyzed and verified by Light Tools software.Finally,engineering practicals were taken as an example to carry out the application research.On the whole,the practicability of the system was analyzed from the technical and economic aspects.The specific work is as follows:（1）A light-guided lighting system has been designed based on optical fiber lighting and photovoltaic power generation technology with low energy consumption daylight lighting and photovoltaic LED compensation lighting.Then,the structure and design concept of the system was exposed,as well as the theoretical design of high efficiency concentrating transmission and the total efficiency was calculated.Finally,the visualization design of the device was drawn by C4D software.（2）The optical effect of the optical fiber lighting system was tested.In the process,the light source diffusion images of the fiber end at different times were observed.Then illuminance changes of natural light,fiber end direct light,diffuse light and lampshade diffused light were investigated.Therefore,the light convergence effect and transmission efficiency of the system were determined.According to the requirements of indoor illumination,a photovoltaic LED lighting compensation system was added to maintain the stability of indoor lighting.（3）The design performance of the system was further analyzed and verified by Light Tools software modeling analysis.The light focusing,fiber optic transmission and lighting effect of the system were optimized and analyzed.This shows that the full transmission of light in the optical fiber can minimize light loss and present a good light transmission effect.When an optical lens was added for secondary focusing on the diffusion end,it could effectively improve the brightness of the lighting source concentration phenomenon,and enhance the illumination effect and light uniformity.（4）Finally,combined with the engineering case of a student dormitory building to start application research.The building structure model was established by Revit software,and the light guide lighting system was optimally arranged for the building structure.Then the lighting effects of the back-sun dormitory and corridor space were simulated by DIALux software.And the light-guided lighting system was compared with conventional lighting methods for economic health benefits and energy savings assessment calculations.While meeting the lighting requirements,a light-guided lighting system can save 515.79k Wh of electricity and reduce CO2emissions by 514.24 kg per year. |
