Incandescent VS energy-saving lamps VS LED lamp which is more cost-effective? (two)

Test results (1)

LED lamp energy saving and longevity

In the sphere of the 3M metering integrating sphere, the workers connect the incandescent lamp to the lamp holder of the 220 volt voltage, turn off the ball, wait for 5 minutes and measure the current to measure the actual power of the bulb. After testing, it is concluded that the incandescent lamp current is 0.412 and the measured power is about 92.56 watts. Similarly, the energy saving lamp is connected to the lamp holder with a voltage of 220 volts, and the energy saving lamp has a light stability time of about 10 minutes. After testing, energy saving lamp current is 0.1365, the measured power of 18.65 watts. The LED lamp is connected to the lamp holder, the ball is closed, the current of the LED lamp is measured to be 0.04579, and the measured power is 9.337 watts.

From the above data, the incandescent lamp is far higher than the actual power of other lamps, thus showing the highest power consumption.

If from the price point of view, a 9 watt LED lamp market price of $50, while the incandescent lamp is only $3, energy-saving lamps need $15 to buy a LED lamp is equivalent to the purchase of 16 incandescent lamps, energy-saving lamps. Staff told reporters that although the LED lamp price is expensive, but the power consumption and the service life of the bulb to count, LED lamp life is generally more than 20000 hours, while the incandescent lamp life is only 1000 hours, the general energy-saving lamp life of 6000 hours or more. In the power consumption, in order to work for 1000 hours as a standard, the incandescent lamp needs to consume the electricity of 92.56 degrees, the energy saving lamp is the power of the, the LED lamp is only 9.337 degree electricity. To the residents of electricity 0.5 yuan calculation, the use of 1000 hours, incandescent lamp needs $46.28, energy-saving lamps need 9.325 yuan, while the LED lamp is only $4.67. It seems that the use of LED lights is the most cost-effective.

Test results (two)

LED lamp is the most bright incandescent light energy saving glare

In the sphere, the staff will be connected to the lamp bulb 3 experimental 220 volts, the incandescent lamp and energy-saving lamps are bright in the stable time, stable time energy-saving lamp for 10 minutes, wait 10 minutes, the reporter with the same exposure group sensitivity, aperture and shutter speed close to three lights take a group photo, observe the reflective level in different lighting under the irradiation of the ball body. From the photos can be found, although the LED lamp is only 9 watts, but the highest brightness. The brightness of the incandescent lamp is a little weak, the light color is yellow, but the overall sense of light is relatively soft. The energy saving lamp is brighter than the incandescent lamp, darker than the LED lamp, the color is too white, and there are some glaring eyes. This, from the color temperature data can also be seen, the color temperature of incandescent lamp is 2665K, for the warm color; energy saving lamp and LED lamp color temperature in 6000K or so, for cool color temperature. Why only 9 watts of LED light than the 20 Watt energy-saving lamps and incandescent light of the 100 watt light? Staff told reporters that the conversion rate of LED lamps are higher than the other two models, only a little bit of electricity can emit light.

Similarly, incandescent lamps and energy-saving lamps due to the conversion rate is relatively low, in addition to the conversion of electricity into light energy will be converted into heat, consumed. In the 3 paragraph lights were used after 10 minutes, the reporter hand temperature probe, incandescent lamp temperature was too high, not directly by hand touch; energy-saving lamps although also fever, but not hot, while the LED lights only near the lamp mouth only some lukewarm. The data measured from the integral ball can also be seen, the luminous flux of LED lamp is 1021lm, and the luminous flux of incandescent lamp is only 934.04lm.