The Research On The Daylighting Characteristic And Control Strategy Of The Office Lighting

This thesis is carried out on the basis of the science and technology of Chongqing: The research on mechanism and experiment of the control of the Permanent Supplementary Artificial Lighting in Interiors.Though daylighting has been neglected all the time in interior lighting, traditional lighting control method is still used in most buildings.In addition, with the constant improvement of people's living, the pressure of the supply of electric power of our country is becoming more and more serious, among which the lighting power consumption reaches 20% of the social total power consumption. Based on the analysis of daylighting characteristic, the control strategy of "introducing" the daylighting with electromotive micro-blade and studying the Permanent Supplementary Artificial Lighting is proposed, which will help to get the healthy, energy-conserving and flexible working lighting luminous environment. Then the determinations of the indoor daylight illuminance, the maximum grilles angle and the output luminous flux of light sources become the main concerns of this thesis. Concrete content is as follows:①Based on the analysis of daylighting characteristics, the indoor daylight illuminance is produced by direct sunlight, skylight, outdoor reflected light and indoor reflectede light. Calculation of these four parts is performed.②The simulation model is established in DIALux software. And quantitative analysis of characteristic parameters which is related to office building daylighting is performed. The influence of each factor on the indoor daylight distribution and energy conservation is proposed.③The micro-blade angle is determined by a multi-inputs/single-output fuzzy inference system.④The indoor manual lighting is combined with the daylighting. Manual lighting is started and adjusted when the daylighting couldn't meet the light enviroment requirement. The indoor daylight luminous flux is calculated, and the manual lighting output luminous flux is optimized by the luminance transfer function matrix.⑤Based on the Analytic Hierarchy Process (AHP), the hierarchical structure of lighting evaluation index system is established, and the weight of each evaluation index to target. The single-index evaluation and comprehensive evaluation have been done by the gray evaluation method in gray theory.