The choice of lamps: how many lumens in a 100 W incandescent lamp?

Lumen (luminous flux) is a unit of measurement according to SI - the International System of Units. This is a light quantity, denoted by "lm" or lm.

Lamp Replacement

Calculations have long shown that an incandescent lamp is not the most effective option for lighting, especially when it comes to large rooms. The lion's share of energy goes not to lighting, but to heating the filament, which makes the light bulb more like a small heater.

The issue of productive energy consumption is especially important now, at a time of high consumption of resources and, most importantly for consumers, high prices for utilities. Therefore, when buying, it is worth paying attention not to the power measured in watts, but to how much light a light bulb will give. And just this parameter changes in lumens.

How many lumens in a 100 W incandescent lamp

Such lamps are most often used in living quarters. They give quite good lighting and a color that is comfortable for the eyes. Since lumens indicate how much light a source emits, the larger the number, the brighter the illumination will be. However, these indicators can vary widely, especially if it concerns different types of lamps. It is quite difficult to calculate how many lumens in a 100 W incandescent lamp. For example, in a 20-watt lamp gives a light flux of 250 lumens, and if the power is doubled, the flow will reach 400 lm. But a 60-watt bulb has a figure of about 700 lumens, 900 lumens is equal to a power of 75 watts. The flow of light with a capacity of 1200 lumens is achieved if the power of the incandescent lamp is 100 W.

Optimizing power consumption

Sooner or later people start to think about how to save on electricity, because progress does not stand still. First, there were energy-saving lamps, which, according to manufacturers, reduce energy consumption by two or three times. And now there are even more economical lamps - LED. Their only disadvantage is a rather high price, so the main problem is that the new lamp includes both the minimum power consumption and the brightness of the incandescent lamp.

Cheating

LED lamps do consume several times less energy, however, information declared by manufacturers often misleads consumers. For example, they say that the lamp is similar to a 70-watt bulb at 500 lm, but this can not be true in any way. In order not to make a mistake with the choice, it is necessary to remember how many lumens in a 100 W incandescent lamp.

After buying such an item, the person is disappointed, because the light is not enough and you have to change the device to a more powerful one, which is associated with additional costs, especially if the lamps were bought for the whole chandelier. However, when changing them, it is worth paying attention not only to the magnitude of the lumen. Luminous flux / power is the ratio in the International System of Units (SI), which is called light output. Simply put, the parameter shows what brightness produces 1 Watt of a particular light source. Measured in lumens per watt.

How to choose?

Taking into account all the parameters, one should take into account not only how many lumens in a 100 W incandescent lamp, but also the light output, which for 100 watts is equal to 13.8 lm / W. For example: the same parameter for LED lamps can be from 10 to 300 (!) Lm / W.

Another undisputed advantage of the incandescent lamp is the transparency of the glass and the angle of light distribution equal to 360 degrees. Therefore, when replacing with other types (for example, an LED lamp has an angle of half the size), the lighting may deteriorate. In addition, it is incandescent lamps that are ideally suited for dimmers that can regulate not only brightness, but also power consumption.

Labels

As a rule, information on how many lumens in a 100 W incandescent lamp can be found on the package. In addition, important parameters such as color temperature and color rendering index (CRI) are also indicated there, correctly selecting which, you can get the most comfortable shade of light for the eyes.

The color temperature of a conventional incandescent lamp is 2800 K (measured in degrees Kelvin). This value and should be guided when choosing a shade of light, if, of course, the room is residential. Neutral colors with a color temperature of 4000 to 5000 K are suitable for working areas (offices, hospitals, pharmacies, shops), and galleries and exhibition halls are recommended to be illuminated with daylight (5000 K and above).

Accuracy

If, for some reason, it is important that the lighting remains exactly the same when replacing the lamps, you can preliminarily measure the light output with a special device - the luxometer. Lux - this is the ratio of the ratio of lumens and the area of the room (1 lux is equal to 1 lumen per square meter). Usually this applies to various institutions where it is necessary to monitor the compliance of lighting with government regulations.

The tricks of effective energy conservation

One of the curious advice from professionals is the use of lamps of different power. For example, more powerful lighting is required in the working area of the room, and in some parts it is possible to do with a smaller number of suites. The second advice is the separate inclusion of lamps. This trick will allow not only to consume less electricity, but also to separate zones in studio apartments or large rooms.