If 50 years ago an ordinary incandescent lamp was used in almost all the rooms, then recently the range of choice has expanded considerably. On the shelves appeared a lot of a variety of both in form and in the principle of operation, in terms of lighting and in the shade of incident light, lamps.
There was such a device as energy saving lamp. The name "energy saving" means two types of lamps. The first type - a fluorescent lamp, the second - LED, which is based on LEDs. Let's now try to figure out by what criteria we will choose the lamp we need.
Fluorescent lamps differ from ordinary incandescent lamps in that instead of a spiral, they contain mercury vapor. In this gas the electric charge burns, forming ultraviolet radiation. Thanks to a special coating on the walls of the bulb, the radiation is converted into ordinary light. In the modern market there are many such lamps equipped with the usual cartridge. That allows you to install them in a standard base instead of incandescent bulbs.
LED lamps have a different principle of operation. They shine thanks to a special LED crystal whose dimensions rarely exceed 1x1 mm. When an electric current is passed through it, the crystal emits light. The number of such crystals in the lamp is about a dozen, but sometimes there are several dozen.
The choice of energy-saving lamps on their characteristics
When buying a conventional incandescent lamp, the buyer, of course, draws attention to the small inscription on it, where the lamp power is fixed. The buyer already knows in which room and for what purposes he takes this or that lamp. For example, in the kitchen, he stops at choosing a lamp with a capacity of 80 to 100 watts, in a bedroom - a room of 100 - 120 watts.
On fluorescent lamps also indicated their power, and even the power of the incandescent lamp, which will correspond to the brightness. But here the buyer may not like it very much that a 100 W incandescent lamp corresponds, in terms of power consumption, a 20 W fluorescent lamp. It's all about her device, but sometimes these parameters are too high. It is worth noting that after some time fluorescent lamps dim.
Currently entered parameter such as "Colour temperature". Measured in Kelvin. What it expresses: the fact is that some consumers refuse fluorescent lamps, because of their cold bluish color. But as some manufacturers have noticed, a fluorescent lamp can be warm yellowish if you follow the rules There was developed a special scale on which the “color temperature” is measured. For example, 2500 - 2800 K - warm yellowish tint, 4000 - 4200 K - natural white light, 6000 - 6500 K bluish cold light. ampy.
You, probably, sometime noticed, how some lamps take away surrounding colors. Make them less bright or distort. In addition to the "color temperature" there is such a thing as an index "color rendering"It shows - how correctly the colors of surrounding objects will be displayed. The higher the color rendering index, the more correctly the colors of the objects illuminated by it are displayed. Best of all, this effect is noticeable at night, when the items are illuminated with a sodium lamp. shade, and colors like blue or green are almost not noticeable at all.
The index of "color rendition" of such lamps is from 20 to 25, i.e. it is very low. In conventional incandescent bulbs, the index of “color rendition” is 100. In fluorescent bulbs, it is 80-90. That is, the color of objects has a slight distortion almost imperceptible to the naked eye. However, there are drawbacks: for example, some make-up for ladies does not look the same under different lighting conditions. Lamps with an index below 80 are already "enemies of color", they are best used for lighting, for example, a garage or storage rooms.
What to consider when choosing an energy-saving lamp?
When choosing energy-saving light bulbs, besides the power, they are usually indicated light intensity, measured in lumens. To accurately compare the power of a fluorescent lamp with the power of an incandescent lamp, we divide the light intensity by twelve. At the same time we get the power that would be required for the incandescent lamp with the same amount of light given to it. "Color temperature" is a very important criterion. If you do not want to be disappointed when you install the lamp in the base, its light, better buy fluorescent lamps with a "color temperature" up to 3500 K.
See also: How to choose a quartz lamp for the house?
Do not forget about security! Energy-saving lamps, especially fluorescent ones, are very harmful for the ecology of the environment. Such lamps when using them must be recycled. But, despite all sorts of warnings of citizens, less than 30% of the population hand over to recycling. Please do not forget that mercury vapors are the basis of these light bulbs, and they should not be broken and thrown into garbage cans. If it goes on like this, then our landfills, on which there are so many various toxic substances, will also be gifted with mercury pollution. What, of course, would not want to!
Especially forwomeninahomeoffice.com.ru - Andrey Smirnykh