The cost of lighting costs = electricity costs + lamp prices. The main factor of cost depends on the power consumption of the bulb. In fact, 80% to 88% of every dollar is spent on electricity consumption. Therefore, to save lighting costs for your unit or home, the most scientific way is to buy energy-saving lamps that make the most efficient use of energy. Although the purchase price of an energy-saving lamp is more expensive than a standard incandescent light bulb, many examples show that this investment is paid back in less than three months.
Advantages of electronic energy saving lamps
The working principle of the electronic energy-saving lamp: the high-frequency electronic ballast is used to ignite the fluorescent lamp by the 50HZ city inverter 20-50HZ high-frequency voltage. It has the following advantages:
(1) Light efficiency High luminous efficiency, that is, luminous efficiency, refers to the ratio of the luminous flux emitted by a light source to the electrical power consumed. It can be expressed in lumens per watt or LM/W (luminous flux: refers to the amount of light emitted by the light source per unit time, which is an important indicator for measuring the brightness of the lamp, expressed in LM.) Compact fluorescent lamps are compared with ordinary bulbs. The luminous efficiency is increased by about 5-6 times. For example, the luminous flux of an 11W energy-saving lamp is equivalent to a 60W ordinary incandescent lamp.
(2) Long life The so-called life refers to the cumulative time of a finished lamp from ignition to "burning" or lamp operation to any requirement below the life performance specified in the standard. Ordinary incandescent bulbs have a rated life of 1000 hours, and compact fluorescent lamps typically have a lifetime of 5,000 hours.
(3) Color development The light source of various steps will display different light colors. We use the CRI (COLOR RENDERING INDEX) to determine the range from 0 to 100. The color of the incandescent lamp and the daytime sunlight shows an index of 100. Displaying the level of the index directly reflects the color rendering of the light. The higher the color rendering index of the light, the more the true color of the object under its illumination is reflected. On the contrary, the color of the object will be distorted. In general, as long as the color rendering index of light is greater than 75, the color of the object can be truly reflected without distortion.
The compact fluorescent lamp uses a rare earth trichromatic phosphor, and its color rendering index is about 80RA, which is significantly improved compared with ordinary fluorescent lamps. If cheap halogen powder is used as the raw material, this effect will not be achieved.
(4) Small size, beautiful appearance, easy to use Because the compact fluorescent lamp has a high power load, it is small and beautiful, and has a decorative effect. The lamp cap specification of the integrated energy-saving lamp is basically the same as that of the ordinary bulb, so it can be used directly instead of the ordinary bulb. Its market capacity is huge and it is easy to promote and apply. It can be said that the compact fluorescent lamp concentrates on the power saving of the fluorescent lamp, the long life and the incandescent lamp are small in size, the color is good, and the use is simple, and the like is a typical light source of modern indoor lighting, and has become a recommended product of the international green lighting source. There are huge potential markets and development prospects.
How to choose and rationally use compact fluorescent lamps
(1) Select lamps that meet the characteristics of the light source. For example, a large number of ceiling-embedded lamps should have good light reflectivity, and the heat dissipation and ventilation should be good. The diameter and depth of the reflective surface of the lampshade should match with the energy-saving lamps. Generally, the energy-saving lamps are not suitable for adjustment. Light fixtures are not suitable for small-volume enclosed fixtures, nor for places where water is easily sprayed.
(2) The fluctuation range of the power supply voltage should meet the requirements of the voltage fluctuation of the urban power grid in China <+10. The voltage fluctuation in some areas is too large, which will have a great impact on the performance of the energy-saving lamps.
(3) The temperature of the light source color is referred to as the color temperature, which is expressed in Kelvin (K). In the international arena, the color temperature is divided into the following types of intense, which makes the eyes tired, but the psychological feeling seems to be brighter.
Such as the illuminance level recommendation table of the following places
Color temperature | Representing color | Representation symbol | Display index RA |
6500K | Daylight | RR | 76 |
5000K | Neutral white | RZ | |
4000K | Cold white | RL | 78 |
3500K | white | RB | |
3000K | warm white | RN | 80 |
2700K | Incandescent | RD |
(4) Lighting design All the different recommendation requirements for different fields, not blindly pursuing the brighter, but should be full.
Such as the illuminance level recommendation table of the following places
place | Residential | hostel | Store supermarket | SCHOOL | workplace | |||||||
bedroom | bathroom | kitchen | hall | restaurant | kitchen | classroom | library | office | meeting room | Drawing room | ||
Suitable illumination (LX is Lm/m2) | 50 | 100 | 300 | 300 | 200 | 500 | 330-750 | 300 | 500 | 300-500 | 300-500 | 750-1000 |
( Note: Illuminance refers to the luminous flux per unit area, the unit is Lx or Lm/m2. For example, if the size of a bedroom is 20m2 and the required illumination is 50Lx, then only one luminous flux is 1000Lm (20m2*50LX=1000LM) 3U 20W energy saving lamp.)
(5) Energy-saving lighting is also a long-term national policy of the country. It is a need for human resources to save resources and protect the environment. It must be widely publicized and promoted.
Editor: China Lighting Network Leaves
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