Why are LED lights more energy efficient than traditional incandescent, ESL?

 Many people know from the internet that LED lights are more energy-saving VS CFLs, metal halide and incandescent lamp. Is it really LED light more energy efficient? Why is led light better? These questions often bob up.

In this article, I will make a detailed comparison of the material and features difference between LED lights and conventional lamps. I will compare and explain the below points.

How the incandescent lamp lighting and its lighting material features.

The lighting theory of ESL (energy-saving lamp).

LED light component, lighting principle, LEDs energy efficiency, and lifespan VS incandescent lamp CFL, ESL.

Why government and business owners are prioritizing LED Lights?

Why the LED light you bought easy to die and not save money for you?

After reading all the content, you will get your answers and almost know how to pick a good LED light for yourself.

How the incandescent lamp lighting and its lighting material features.

 

Traditional incandescent bulbs lumen output is around 10 Lm/per watt, last lifetime about 1,000 hours. When the bulb is connected to the power supply, the electric current flows through the filament, then electric currents produce a thermal effect. As a result, the incandescent lamp filament emits continuous visible and infrared light. This phenomenon will happen only the filament temperature rises to 700K. Due to the filament work under such a high temperature, most of the energy is absorbed in the way of infrared radiation. Due to the high temperature of the filament, evaporation is also very fast, so the lifespan is also greatly shortened (so the incandescent lifetime is about 1000 hours).

From the point of energy saving and consumption reduction, the traditional incandescent lamp has a lot of infrared energy loss, high-temperature heating, and short life. Therefore, developing advanced energy-saving and environmental protection lamp is an inevitable revolution trend.

 

The lighting theory of ESL (energy-saving lamp).

 

In contrast, the lighting theory of the ESL (energy-saving lamp) is heating the lamp filament through the ballast. When temperature come to 1160K, the filament starts to emit electrons (because some electronic powder is coated on the filament), and the electron collides with argon atom to produce an inelastic collision. After the collision of argon atom and mercury atom, the energy is obtained, and the mercury atom is ionized after absorbing energy and emits 253.7nm UV light, Because the temperature of the filament is about 1160K, which is much lower than that of the incandescent lamp at 2200k-2700k, the service life of the fluorescent lamp is greatly improved, and the energy-saving and consumption reducing degree can reach 5000 hours. Because it does not have the current thermal effect of incandescent lamp, the energy conversion efficiency of the phosphor is also very high Up to 50 lumens per watt.

 

LED light component, lighting principle, LEDs energy efficiency, and lifespan VS incandescent lamp CFL, ESL.

 

LED (light-emitting diode) is a kind of semiconductor that can convert electric energy into visible light. It changes the principle of incandescent lamp emit light through tungsten filament and energy-saving lamp lighting via tricolor powder, LED adopt electric field to emit lights. Because LED uses a solid semiconductor chip as the light-emitting material, and the traditional light bulb major lighting material is metal, so the energy emitted is different. According to relevant statistics, when a red LED reaches a certain brightness, the energy consumption is 15 watts, while the traditional bulb needs to consume up to 150 watts to achieve the same measurement.

According to the analysis, LED advantages are very obvious— long life, high luminous efficiency, no radiation, and low power consumption. The spectrum of LED is almost concentrated in the visible band, and its luminous efficiency can exceed 150lm/w (2010). Compared with traditional incandescent lamp, spiral energy-saving lamp, and T5 tricolor fluorescent lamp, the results show that the luminous efficiency of an ordinary incandescent lamp is 12lm/W, the lifespan is less than 2000hours, the luminous efficiency of the spiral energy-saving lamp is 60lm/W, the lifespan is less than 8000 hours, T5 fluorescent lamp is 96LM/W, the life is about 10000 hours, and the luminous efficiency of white LED with a diameter of 5mm can exceed 150lm/W (At Weshine, the finished high power LED light real lumen output can reach 145lm per watt, which also at the top level of China LED light company), the service life of LED chip can be more than 100,000 hours (Weshine’s LED light span can be 50,000hours). Some people also predict that the life limit of LED in the future will be infinite, and it will also dominate the market.

Why government and business owners are prioritizing LED Lights?

Two reasons, even though the LED lights are proved are much more Energy Efficient Light compare with traditional incandescent, ESL, we have another article – How LED Lights Can Save Electricity and Energy in Our Daily Life with details charts comparison.

The worldwide government now pays much more attention to Environmental protection against global warming. And conserve energy, reduce emissions is an effective way, so the government hopes to use LED light to replace the traditional light. LED lights not only green power but also can save lots of electricity costs for people. But, when LED light first spread in the market, the price is 3-4times higher price than the traditional lamps, and electricity saving effects usually need 1-2years can see obvious. So ordinary people have doubts about this whether LED light really can save more electricity cost compare with it such high cost.

So government been the fist users, after that encourage the business owner to upgrade their traditional lamp to LEDs, many countries have the policy, the government will give energy cost refund to the company who change to LED lights, which make many business owners realized that LED light is more bright and really save lots of electricity cost for them.

Why the LED light you bought easy to die and not save money for you?

With around two decades of development of the LED industry, LED lights prices to reduce a lot, many homeowners now use LED lights for their house decoration, and LED light types are varied and colorful, dimmer, smart.

But there is another part of people who are losing confidence in the LED lights because the LED lights they bought usually easy to die, it does not like it says energy-saving and 45,000-50,000hours life span. Actually, it can’t blame the LED light, it is the production process and material, LED industry development many years, which make LED lights come low-middle-high end material, from its component power supply, LED chips, and heat sink. Which causes the below quality problem.

1, The cheapest use very simple power supply structure, so LED lights die very quickly, if the whole lamp dies in a short time, the problem most happened at the driver does not work.

2, Another poor quality type is the use of the small factory LED chip, people usually know led chip features are super bright, so use less power can equal to very high power traditional lamp then save a lot of electrical power. But LED chip bright not means finished LED light can reach high lumen, before use on lighting, the LED chip need a chip packaging process, if this step without good equipment and skill, the LED chip come out with low lumen, now the first-class led brand include Cree, Philips Lumileds, Osram, Samsung handle the mature chip packaging technology.

For more reason, you can read us another article says ”How long do LED light really last? Why your led bulbs burn out very frequently?”

So not all LED light is good, we need to know some basic principles to help to pick up good LED light really lighting efficiency, and energy-saving. At Weshine, we work with CREE, Osram, Lumileds, and Samsung such a big brand, and power supply we import from Meanwell, Osram.

If you consider quality LED lights, I recommend you review Weshine LED lights here.