Study On Energy Saving Application Of "Intelligent Mirror" In Teaching Building Of A University

With the increasingly prominent energy problems,energy conservation and emission reduction has become the general trend.In China's energy consumption data,building energy consumption accounts for about 25%,while the energy consumption of lighting,heating and air conditioning accounts for about 80%of the total energy consumption in the use of buildings.Thus,"light" and "heat" are two important factors affecting building energy consumption.Solar energy is a kind of abundant clean energy with great potential for development and application.This paper belongs to the applied research category of solar energy.The theoretical assumption of using specular reflection prnnciple to provide indoor light and heat has been confirmed by predecessors,among which there are many reliable technical explorations.Based on these theoretical assumptions,the subject of practical exploration,research results for the "Intelligent Mirror".After three versions of iterative upgrade,has become mature.The device is a kind of lighting and heating equipment which can automatically track and directionally reflect the direct sunlight.Its advantages are simple structure,controllable cost and accurate positioning.Its operating principle is:according to the pre-calculated solar motion trajectory,real-time tracking through the controller,and then with the help of the pitch and horizontal direction of the motor on the mirror real-time adjustment,direct sunlight directional reflection to the specified building interior.In order to improve the indoor light environment and thermal environment,finally to improve indoor lighting and heating energy saving purposes.In order to verify its practical application effect,the author conducted relevant experiments in the university classroom from May 2018 to April 2019.In the experiment of indoor thermal environment evaluation,the author selected pmv-ppd index to evaluate indoor thermal comfort.In the experiment of indoor light environment evaluation,the author chooses fuzzy comprehensive evaluation method to evaluate indoor light comfort.Comparative experiments show that:"Intelligent Mirror" is indeed helpful to improve the indoor thermal environment and light environment comfort of north lighting room,to achieve the purpose of auxiliary heating and lighting,and then can indirectly reduce the heating and lighting energy consumption.In addition,in the process of the experiment,the "Intelligent Mirror"also exposed some problems to be improved,such as glare,incident light quality and wind resistance."Intelligent Mirror" has accumulated a lot of application feedback after nearly a year of practical operation.In order to realize large-scale promotion and application as soon as possible,the author systematically summarized relevant problems and proposed improvement strategies."Intelligent Mirror" has a strong practical significance for improving the light and heat defects in the north room.It can be applied to the energy saving transformation of existing buildings or the integrated design of new buildings.