Research On Safe And Energy-saving Lighting Technology For Enhanced Section Of Highway Tunnel

With the vigorous economic development and the continuous improvement of comprehensive national strength,my country’s tunnel construction industry is developing rapidly,but the energy consumption problem that comes with it is getting more and more serious,especially the tunnel lighting system,which is brought to alleviate the difference in brightness inside and outside the tunnel.For visual problems,my country currently adopts the method of installing enhanced lighting sections at the entrance and exit sections.However,the energy consumption of the enhanced lighting section of the tunnel is huge,which not only brings a heavy burden on the economy,but also causes extremely serious pollution to the environment.Driven by the national development concept of energy conservation and emission reduction,we must continue to seek green energy-saving lighting methods for tunnels based on safety.In this paper,two energy-saving technologies,tunnel solar lighting system and tunnel inner wall decoration,are studied through indoor experiments and software simulations,aiming to optimize tunnel energy-saving lighting technology,reduce economic costs,and reduce energy consumption.First,carry out the solar automatic tracking test and the fixed solar energy test,analyze the ratio of photovoltaic power generation and tunnel lighting,establish the relationship between the solar light intensity,the output power of the photovoltaic panel and the lighting effect of the LED lamp,and evaluate the automatic tracking The power generation utilization rate of the system is improved and the energy-saving effect is improved.Taking the Kemeiling tunnel as an example,the road tunnel photovoltaic lighting system is designed to replace the original grid power supply to strengthen the lighting system.Secondly,carry out indoor experiments on tunnel inner wall decoration to study the influence of different paint reflectance on lighting quality,and then simulate the tunnel lighting environment through the lighting design software DIALux,study the influence of different reflectance and lamp angle combinations on the road lighting quality,and propose to determine the best The construction technical route of the best installation angle.Finally,economic and energy-saving calculations were carried out for the photovoltaic lighting system of the highway tunnel in the right hole of the Kemeiling Tunnel,and the benefits of three different lighting optimization methods were discussed.The main conclusions are as follows:(1)Sunlight intensity,photovoltaic panel output power and LED lighting effect are positively correlated.The LED lighting effect of the sun automatic tracking lighting test is the best.Compared with the photovoltaic panel facing east plan,the automatic tracking system calculates energy saving 36.35%,compared with the photovoltaic panel facing west plan,the automatic tracking system can save energy up to 13.45%,compared with the photovoltaic panel facing south plan,the automatic tracking system energy saving can reach 10.12%;(2)Under the same reflectance,the average illuminance increases as the installation angle of the lamp increases.Under the same installation angle of the luminaire,the reflectivity of the inner wall can improve the average illuminance and total uniformity,and improve the lighting environment.Under the combined effect of lamp angle and reflectivity,the solution with stronger reflectivity will have a larger installation angle when the average illuminance peak is reached;(3)The change of the angle of the luminaire affects the distribution of the road illuminance.The increase in the reflectivity of the inner wall of the tunnel will increase the average illuminance of the road.Compared with the secondary reflection,the energy saving of the luminaire can reach 4.87%～7.91%.Different reflectivity schemes There is a difference in the optimal angle of the lower luminaires,the minimum difference is 5°,and the maximum difference is 15°.When the installation angle is 0° and no secondary reflection is taken into consideration,the light efficiency loss can reach up to 36.08%.At the tunnel site,the installation angle of the lamps should be appropriately adjusted according to the reflectivity of the inner wall of the tunnel;(4)Taking the right tunnel of Kemeiling Tunnel as an example,replace the original grid-powered enhanced lighting system with a highway tunnel photovoltaic lighting system.The initial construction cost of the system is 210,000 yuan and the payback period is 10 years.A total of 14.839 tons of standard coal was saved,which can reduce emissions of about 17.987 kg of smoke and dust,about 103.426 kg of sulfur dioxide,about 36.964 tons of carbon dioxide,and about 5.371 tons of ash,which has a wide range of application values.Through the research of this article,the theoretical content of solar tunnel technology has been enriched,and the optimal angle of lamps and lanterns under different tunnel inner wall decoration schemes have been discovered,and the technical route for determining the optimal installation angle on site has been proposed,which lays the foundation for the application of tunnel lighting energy-saving technology.