Are LED lights more energy efficient?
Compared with incandescent lamps and energy-saving lamps, are LED lamps more energy-efficient? Quality inspection experts said that to evaluate whether a lighting product is energy-saving, it is usually evaluated by indicators such as electro-optical power conversion efficiency (light efficiency) and lighting effect (color temperature, color rendering index). The electro-optical power conversion efficiency of LED lamps can theoretically reach 100%, the same lighting effect is more than 80% energy-saving than traditional light sources, and the service life can reach 60,000 to 100,000 hours, which is more than 10 times longer than traditional incandescent lamps and energy-saving lamps.
This LED lighting product supervision and inspection focused on three indicators: initial light efficiency, color temperature, and color rendering index. Among them, the initial light efficiency reflects the energy saving of LED lighting products, and the color temperature and color rendering index are related to human visual experience and comfort.
The greater the initial light effect, the more energy-saving. In this spot check, the median value of the initial luminous efficiency of the LED lighting products of Jiangsu Real Estate was 80 lm/W (lumens per watt); the median value of the initial luminous efficiency of the commercially available LED lighting products was 60 lm/W. Compared with the results of spot check of energy-saving lamps, the initial median value of energy-saving lamps in Jiangsu enterprises is 64 lm/W, and the median value of initial luminous efficiency of commercially available energy-saving lamps is 41 lm/W, while the initial luminous efficiency of incandescent lamps is usually 8-15 lm/W. From the comparison results, the initial luminous efficiency of LED lamps is significantly higher than that of incandescent lamps and energy-saving lamps, which is indeed more energy-efficient.
