How to correctly select the light source Chen Guizhen electric light source in the design of green lighting engineering in Shanxi to establish a good green lighting environment.
Table 1 color table classification of light source and its use location light source color classification related color temperature / K color feature use place example I less than 3 300 warm color (slightly red white) room, restaurant, banquet hall, multi-function hall, season hall, bar , coffee shop, key exhibition hall 3300 -5300 middle color (white) classroom, office, conference room, reading room, general business hall, general dining room, general rest room, laundry room I is more than 5 300 cool color (blue) design room, Computer room table 2 light source color rendering classification color rendering color index color table application example classification range preferred acceptable warm color matching 1AR90 medium color clinical inspection æ³ cool color gallery warm color to medium color residential, hotel 1B90>Ra> 80 Sex to cold printing, paint, textile industry, industrial work with certain requirements, warm color 280> 60 medium color industry work office, school cold color 360>Ra>40 crude industrial industry operation 440> 20 rough industry, low demand for color development 1 China's green lighting engineering background and its scientific definition of the Ministry of Construction, the former State Bureau of Quality and Technical Supervision and other 13 departments, jointly organized during the "Ninth Five-Year Plan" period to save electricity Its main purpose is to promote the development of high-efficiency lighting electrical products in China, improve the product quality of production enterprises, guide and standardize market order, and expand the market share of high-quality lighting electrical products; through publicity and education, improve consumer lighting awareness and efficient lighting The understanding of products, enhance the market consumption of products, and gradually establish a healthy and efficient lighting product market service system.
2 Color table of color source and its color rendering In order to obtain a good visual effect, a good light environment must be formed by illumination. This light environment produces suitable illumination levels and illumination uniformity, brightness levels and brightness distribution, comfortable color and three-dimensionality, and almost no comfort glare.
Thus, the light source is the primary factor for good lighting. The purpose of green lighting is energy saving and environmental protection, which further embodies the importance of light sources, especially energy efficient light sources. Therefore, in addition to requiring high light efficiency, the illumination source requires that the light it emits has a good color. The color of the light source has two meanings: color table and color rendering. The color that people can directly observe is called the color table of the light source, and the color temperature is the amount that describes the color table. The color of the light source can be classified into three categories according to its correlated color temperature as shown in Table 1. In order to obtain a good lighting effect, the color temperature of the selected light source must be adapted to the required illumination. In general, when the illumination level is low, warm light is used to make people feel comfortable; when high illumination is required, cold light illumination is used to obtain comfort. High color temperature sources should also be used where natural light needs to be added during the day. As for the place where the television is photographed or broadcasted, the color temperature range of the light source is selected according to the requirements of the image.
The color rendering of the light source is always good. However, a lot of research shows that the color rendering and light effect of the light source are often contradictory, that is, the light source with good color rendering tends to have low light efficiency.
Therefore, from the perspective of energy saving, the color rendering of the light source should be reasonably selected. High-color light sources are only used in places where color requirements are high. In general, a light source with a color rendering property but a general light effect is used. The practical application divides the color rendering of the light source into five categories. See Table 2 for different color renderings for light sources with different lighting quality requirements.
3 Classification of lighting electric light sources and applications in green lighting projects Lighting electric light sources are generally divided into three categories: incandescent lamps, gas discharge lamps and other electric light sources. In green lighting projects, various light sources can be selected according to specific conditions.
The principle of light source selection T) meets the requirements of color development in the place; 2) higher light efficiency, better energy saving, environmental protection effect; 3) suitable color temperature; 4) more stable illumination, including limiting voltage fluctuation and offset The stroboscopic change caused by the change of the light and the alternating power; 5) The feeling of æ ', the angle of the door and window, the height of the frame core is flat, and the processing is delicate. Machining accuracy and appearance quality give a sense of beauty. Quasi: It means the size is accurate. Door and window width, height, diagonal, and external dimensions must be accurate, including the geometry of the material section, the size of the window core, the accuracy of the fitting and opening of the fitting. These must be guaranteed by the processing technology of the factory and the quality of the workers. Density: It means that the matching clearance should be tight and seamless, and the smaller the matching clearance, the better the watertightness and airtightness. Live: It means that the doors and windows are pushed and pulled, the switch is flexible, easy to use, and the noise is small. All of these reflect the quality management, technical management, process management, equipment management and production personnel quality of the manufacturer. The general small road factory is not female. In 1987, graduated from Taiyuan University of Technology, majoring in industrial electrical automation, senior engineer. , Taiyuan Architectural Design and Research Institute, Taiyuan 0300002, Shanxi, China: How to choose the right source of light in general lighting, incandescent lamp / W compact fluorescent lamp / W power saving effect (% of electricity saving rate) electricity saving / W1002575W (75% ) 75 Note: Replace the upgrade of the same straight tube type fluorescent lamp with the same illumination. See Table 4 for the comparison of the luminous efficiency of the straight tube type fluorescent lamp from Tl2 to T5. Tube diameter ballast power W luminous flux lm light effect lm/W Alternative illuminance improves % power saving rate or electricity rate section /%T (38mm) Inductive 402 HID lamp correct selection, as listed in Table 5.
Table 5 HID lamp effect comparison number lamp type power W luminous flux lm light effect Jbi / W life h color rendering index / Ra replacement mode illumination increase /% power saving rate or electricity cost savings / 10 with 2 instead of 1 illuminance is the same, but power saving 37.5 The illuminance was reduced by 13.6% with 3, but the energy saving of 37.5 was increased by 37.1% with 4 instead of 1 illuminance, but the power consumption was the same.
Good starting point characteristics;) Longer service life and better performance and price ratio.
Commonly used incandescent bulbs.
1), light on, bright, continuous dimming, simple structure, low price, but short life (1 use: living room, living room, lobby, guest rooms, shops, restaurants, walkways, conference rooms, courtyards.
Mode of operation: table lamp, ceiling lamp, wall lamp, bedside lamp, corridor lamp.
An inflatable incandescent lamp containing a portion of a halogen element or a halide in a filling gas. With all the characteristics of ordinary lighting incandescent lamps, the light efficiency and life are more than doubled than ordinary lighting incandescent lamps, and the volume is small.
Uses: conference rooms, exhibition halls, living rooms, commercial lighting, film and television stage, instrumentation, automobiles, airplanes and other special lighting.
The light color is good.
Fluorescent lamps are straight tube type, ring type, compact type, etc., and are widely used energy-saving illumination sources.
Replace incandescent lamps with straight tube fluorescent lamps, saving 70 90%, long life 5 times to 10 times; upgrading straight tube fluorescent lamps, saving 15%~50%; replacing incandescent lamps with compact fluorescent lamps, saving electricity 70%~80%, long life 5 times ~ 000h) High luminous flux maintenance rate, strong fog permeability, but poor color rendering.
Uses: lighting for tunnels, ports, docks, mines, etc.
Features of fluorescent high pressure mercury lamp, high pressure sodium lamp and metal halide lamp: long life and relatively low cost.
Uses: road lighting, indoor and outdoor industrial lighting, commercial lighting.
Features: long life (4 foggy.
Uses: road lighting, floodlighting, square lighting, industrial lighting, etc.
Good color rendering (65~92) Uses: industrial lighting, urban lighting engineering lighting, commercial lighting, stadium lighting and road lighting.
Ceramic metal halide lamp features: performance is better than ordinary metal halide lamps.
Uses: shopping malls, shop windows, key displays and commercial street lighting.
3 other electric light source (others) 80000h) no electrode, instant start and restart, no stroboscopic, good color rendering. (Ra>80) Uses: public buildings, shops, tunnels, pedestrian streets, high pole lights, security and security lighting and other outdoor lighting.
Body semiconductor light source.
Features: high brightness point light source, can radiate various color and white light, 0%~100% light output (electronic dimming), long life, impact and vibration resistance, no ultraviolet (UV) and infrared (IR) radiation, low Working under voltage (safety) purposes: traffic lights, highway demarcation lighting, road guardrail lighting, car taillights, exit and entrance lights, bridge or building outline lighting and decorative lighting.
4 The economic return of green lighting project replaces ordinary lighting incandescent lamp with compact fluorescent lamp. The effect comparison is shown in Table 3 Table 3 Comparison of ordinary lighting incandescent lamp and compact fluorescent lamp
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