Compare incandescent and LED bulbs - which are better?
A bit of history
To make you understand the difference between the appearance of both options, and accordingly the difference in what scientific and technological progress was, we will present the following facts comparing incandescent and LED lamps by the date of invention:
- The first light source (with tungsten filament) was patented in the 1890s by Russian engineer Alexander Nikolayevich Lodygin. At the same time, the first attempt can be considered an invention on July 11, 1874 - a filament lamp.
- As for the LED, the first, the glow of which was visible, was invented in 1962. The person who invented the LED lighting is Nick Holonyak, an American scientist.
As you can see, even if you compare the date of invention of alternative options, you can see a huge difference in almost a century. Nevertheless, the oldest light bulb is still “struggling for a place under the Sun”, which is its huge plus.
Power and light output
At installation of lighting in the apartment First of all, settlement work is done. One of the most important indicators of the calculation is the light output of the devices. In a more obsolete light bulb, light output ranges from 8-10 Lm / W. As for LEDs, their light output efficiency is usually in the range of 90-110 Lm / W, although there are models with an indicator of 120-140 Lm / W. From the above values, it can be seen that LEDs are 7-12 times better in lumens than the alternative.
In order for you to understand how this will affect the comparison of incandescent lamps and LED light sources in terms of power, we will provide the corresponding table:
It can be seen that the power of the diodes is 5 times less and the luminosity and brightness will be approximately the same.
If you decide to design home lighting, we recommend that you rely on the following table comparing incandescent and LED power indicators:
|Required Power (W)|
|Room size (sq.m.)||Incandescent||LED|
In order to independently calculate the light output of a bulb, you need its luminous flux (indicated on the packaging in “Lm” divided by the power “W”), as a result you will get the desired value. For example, if the luminous flux of the LED is 1000 lumens, and the power is 13 W, the return will be 76.9 Lm / W.
The second, no less important point of comparison of LED lamps and incandescent is the heat transfer from the product. A glass bulb of an incandescent lamp can heat up to 250 degrees (although usually the temperature is around 170).That is why such products are fire hazardous, and it is not recommended to use them when installing electrical wiring in a wooden house. In addition, Ilyich’s bulbs are difficult to unscrew from a cartridge if they have worked for a long time before that (you can get burned). LEDs in this regard have proven themselves better than all existing options. The maximum temperature of their heating does not exceed 50 degrees, which allows them to be used in any room.
But this indicator is one of the main advantages of diodes in comparison with incandescent lamps. These light sources can work over 50,000 hours, according to manufacturers. For obsolete light bulbs, the service life usually does not exceed 1000 hours, which is 50 times less. For reasons of economy, it is better to buy an expensive, but long-lasting light bulb once, than to change a budget product every few months.
Here, too, there is a nuance that you should know about. High LED longevity is not an accurate value. The fact is that the diodes fade over time (degrade), so after 40,000 hours you will no longer be able to enjoy the glow that was immediately after the purchase. Read more about LED degradation You can find out from our article.
The efficiency should also be considered when choosing products. Efficiency shows how much electricity is converted into light, and how much into thermal energy (which is why the bulb is heated). At led bulbs Efficiency is about 90%, which is a very high indicator compared to the alternative option, in which only 7-9% of electricity is transmitted to the light.
Unfortunately, many do not pay due attention to preserving the ecology of the environment. People throw fluorescent lamps into garbage bins, despite the fact that mercury evaporates when the bulb is destroyed, which harms both nature and the health of those around it.
In this regard, the comparison of incandescent and LED lamps does not put forward any option in the lead. Both diodes and a glass bulb can simply be thrown into the trash, without special disposal.
There is an opinion that Ilyich’s bulb creates infrared and ultraviolet radiation, negatively affecting human health. In this regard, LED bulbs are completely safe.
And, of course, the most interesting question that users often ask is how profitable to buy LEDs, because they are much more expensive. Today on the forums on the Internet you can read a lot of reviews that refute or justify the saving of LED lamps. The lowest price of a high-quality diode bulb is 300, while at the same time the alternative has a cost of 20-25. Here you should already independently analyze what is more important for you - a long service life and high performance indicators, or low cost and excessive overpayment. Based on this, a comparison can be made on cost savings. The power of diodes is 7-8 times less, the price is 10 times more. Consider the service life and even without much calculation, you can understand that it is more profitable to buy LED lamps. You can clearly see a comparison of the efficiency of LED lamps and incandescent on the table below:
I would also like to compare incandescent and LED lamps based on tables on such signs as:
- current strength;
- Colour temperature;
All this comparison of incandescent and LED bulbs in total gives us a general idea of what is best to choose for a house and apartment!