Energy saving lamps: actual consumption and income

The energy saving light bulbs are slowly being established in the market, even thanks to some awareness campaigns to save the planet.
 Unfortunately, many people, through ignorance or indifference, has not yet considered this product and continues to use the old and uneconomic incandescent or halogen lamps, and in terms of consumption are placed in the middle, try to encourage them to rethink , proving the real savings in terms of money.

•  Incandescent: 

This type of lamp illuminates to heating caused by the passage of electric current through a tungsten filament inside the bulb which heats up to a temperature of 2700 k, causes the evaporation of the tungsten present in the filament by converting the energy into heat and light.  In use, the filament becomes thinner and thinner to break up after about 1000 hours of use.  The energy absorbed, as well as heat, is converted into light by an amount between 5 and 10%.  Due to the dynamic operation, the main limitations with regard to the characteristics and performance of these bulbs are summarized as follows:
 1) Size of bulb and metal attack that required lighting with considerable dimensions;
 2) High energy consumption due to low luminous efficiency;
 3) High thermal emission at potential risk for heat-sensitive objects placed in the immediate vicinity of the bulb during operation;
 4) Reduced life span which forces them to frequent parts;
 5) Light colors warm or low color temperatures that enhance the color ranges from red to yellow, depressing ranges from green to violet.

•  Halogen mains voltage (220v):

 The halogen lamp is the direct evolution of the incandescent bulb differences, as well as in form and in the possibility of use in devices of the size considerably smaller, and significant in terms of increase in luminous efficiency for the same energy absorption.  One factor to be highlighted in terms of consumption is the placing in the bulb of additional gas such as iodine, krypton and xenon times, this in order to allow the overheating of the filament above 3000 ° Kelvin in order to increase the luminous efficiency and move towards the high color temperature.
 Therefore, with respect to the "old" incandescent bulbs, halogen bulbs are much more efficient, keeping in mind that this type of source can reach the power of 1000w lamp.
 Furthermore, the luminous efficiency of a halogen lamp, thanks to the light whiter than a conventional bulb, is 50-100% higher than this, while the useful life ranges from 2000 to 6000 hours.