LED - the clever energy-saving lamp

LED - the clever energy-saving lamp


In addition to the actual energy-saving lamps, LEDs are increasingly pushing the market as an alternative to the light bulb. By using modern LED lighting can save a lot of money, without having to accept the typical weaknesses of energy-saving lamps.

For fans of the classic light bulb, it is slowly getting tighter. Since September 2012, the EU-wide ban on the sale of light bulbs has come into effect. Those who have not covered themselves enough with reserve lamps in the run-up, will soon be in the dark, unless he is willing to switch to energy-saving alternatives.

Unloved alternative: energy-saving lamps fight with many weaknesses and prejudices.

As an alternative to the light bulb could In the past, people often only resort to the energy-saving lamp that many consumers are still very much intoxicated with today. That large parts of the end customer with this solution were so far little warm, is due to the typical weaknesses of the energy-saving lamp, for example, the higher purchase price, the use of mercury, the duty of disposal in hazardous waste, the long start-up time to full light intensity and perceived as unnatural light colors .

For some time now, LED lamps have provided another energy-saving alternative, which clearly outclasses existing energy-saving lamps in terms of environmental friendliness, efficiency and comfort. So they get along without mercury, do not have to be disposed of in hazardous waste and have no switch-on, but a very long life. According to a study by the Berlin Energy Agency, 40 percent of German consumers are already relying heavily or mostly on LED technology.

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LEDs up to 90 percent more economical than bulbs

But do you save as much electricity as energy-saving lamps? Clear answer: Yes! If one takes a light bulb with 60 watts as the benchmark, four hours of daily lighting and an electricity price of 30 cents per kilowatt hour will generate annual electricity costs of 26.28 euros. An energy-saving lamp with comparable luminous power, however, only needs eleven watts and thus produces costs of 4.81 euros per year. The LED lamp is even lower with a power consumption of nine watts and comes to 3.94 euros. Even if the higher purchase price of five to ten euros is taken into account, the LED lamp saves you money compared to the light bulb after only half a year.

The brightness of the lamp is no longer expressed in watts, but in lumens

For many consumers, however, the switch from watts to lumens takes some getting used to. If the wattage was relevant for the light bulb, the brightness of a lamp is described today with the unit lumen. The light of a 40-watt bulb corresponds to around 400 lumens. 60 watts, however, are comparable to about 700 lumens and 100 watts with about 1400 lumens.

When buying look for the desired light color

In addition to the long start-up time is often criticized in the energy-saving lamps, the allegedly cold light compared to the light bulb. Basically, the light color of the lamp is determined by the so-called color temperature - measured in Kelvin (K). Color temperatures of 2,700 to 3,300 Kelvin produce a warm white for the living room and bedroom, which corresponds to the values ​​of a classic light bulb. Neutral white for the kitchen, however, is in an area around 4,000 Kelvin. Jobs are preferably immersed in daylight white (5,000 to 6,000 Kelvin). With LED lights, this spectrum can be easily covered today, so that the lamps can be purchased specifically for the respective application. Incidentally, this also applies to the typical energy-saving lamps. At this point, the prejudice of many consumers is not (any more) true.



Video: Inside an "intelligent" emergency lamp with schematic.|

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