Energy Efficiency with Lighting

Lighting represents 20% to 25% of the electricity consumed in the USA. An average family spends 5% to 10% of its energy for lighting budget, while businesses consume 20% to 30% of their total energy for lighting only.

In a residential or commercial lighting installations, 50% or more waste of energy is obsolete equipment, inadequate , or inefficient use.

Energy conservation requires a reduction of electricity consumed by the light source or reduce the duration of the light source is running. This can be accomplished by:

  • The reduction in power, which is to replace lamps or whole appliances
  • Reduce the light source scheduled time, which means improving the lighting-trols and educate users to turn off unnecessary lights
  • Using the daylight to reduce electricity consumption for lighting
  • Make simple maintenance, which keeps the lights and the quality of light and allows for lower initial levels of lighting.

Replace lamps and lighting

Relamping means to replace a lamp with another to save energy. You can decide to make lighting higher or lower when relamping. But make sure that new production lumened fire corresponds to the tasks performed in space and meets the specifications of the fixture.

Relamping when a store or office, the first test of new lights in a small area to ensure adequate lighting, occupant satisfaction, and compatibility of the new lamp and old equipment.

Replace lights corresponding to the current version of appliances and food can be difficult, especially with older appliances. The purchase of new equipment for new lamps savings product higher energy, reliability, longevity and in relation to relamping.

Relamping fixtures

We learned a lot about the design of the device energy crisis of 1970. Many accessories inside trap a significant portion of light in the camera, while many external accessories tend to disperse a large portion of their light beyond the zone, which causes light pollution.

New equipment incandescent are designed to push all their light in the room. Others use small tungsten-halogen lamps. Progress in design includes appliances and light projectors to better reflect the geometry.

Many incandescent lamps are suited to their tasks. However, some use excessive power to create lighting that is unnecessarily bright. This can be corrected by using weaker lamps.

Some of the current incandescent lamps may be the best type of lamp for their application. A type of light bulb can often be replaced by improving lamp designs, such as reflectors or tungsten halogen lamps. And for energy savings of 60% to 75%, many incandescent lamps May be replaced by CFLs.

When using collection equipment, the standard of A-type reflectors and chandeliers-wasted energy from light is trapped. To save energy, you can replace a 150-watt standard with a reflector of 75 watts elliptical reflector (ER). Remember, however, that the ER lamps are less effective in providing lighting Shallow, the use of parabolic reflectors or reflectors for these purposes.

You can also replace a standard-type lamps with light bulbs in areas where the lights are necessary for long periods of time. Astandard 18-watt 75 watts CFLreplaces-A-type lamp. FC are also packaged in the same reflective glass as lamps to light bulbs. Use lamps packaged as reflectors ellipsoids (type-ER) in embedded devices. Using reflector (R) or parabolic reflector (PAR) LFC for floods and light. New CFLfixtures are equipped with electronic ballasts and reflectors polished metal.

Relamping fluorescent light fixtures

Although fluorescent lamps are effective on the comprehensive energy plan, there are new, even more effective by using electrodes lamps and coatings better than the old fluorescent lamps. What happens to produce the same light output with considerably less power.

Municipality of 40 watts and 75 watts bulbs can be replaced by lamps energy saving of 34 watts and 60 watts, respectively. Energy saving fluorescent lamps for less common devices are also available.

If you need to replace food in your fluorescent fixtures, consider using an improved varieties. Fluorescent these reactors, called the improvement of electromagnetic ballasts and electronic ballasts, increase the efficiency of the fixture by 12% to 30%.

The new magnetic ballasts reduce the loss of ballast, in determining the temperature and system power. Why run at colder temperatures, which can last longer than standard magnetic ballast.

Electronic reactors operate at a very high frequency, thus eliminating flickering and noise. They are even more effective improving magnetic ballasts. Some electronic ballasts can also operate lighting on a dimmer, which is usually not recommended for most fluorescent lamps.

Improve the lighting control

Just check out the lighting devices to turn on the lights and outside or blurred for them. The simplest is a standard break. Other controls are photocells, timers, sensors of employment, and dimmer.

  • Snap passer, which is useful in many areas, making it easier for people in large shared spaces to turn off the lights in unused areas.
  • lights turn photoelectric cells and outside in response to levels of natural light. Photocell play outside the light at sunset and off at dawn, for example. Designs advanced gradually raise and lower levels of fluorescent lighting with natural evolution.
  • mechanical or electronic clocks automatically activate and deactivate internal or external security lighting, security and tasks such as janitorial work.
  • Crank time, which focus on spring and similar to the former four-time, limit the lighting for a short period in which the need for light is short.
  • Occupancy sensors turn on the lights when a person is in the field, then turn off the lights when the person has left. They are known to frequently used areas, such as warehouses. They also have security benefits continues to light when suddenly lights to come, they surprised the intruder and alert residents and neighbors to traffic in the region.
  • Dimmer reduce production and incandescent and fluorescent lamps. Dimmer also increase the duration of incandescent lamps significantly. However, dimming incandescent lamps reduced their production of light that their power. This makes light bulbs and less efficient because they gray. Equipment fluorescents requires a graduation ballasts and lamp holders, but does not reduce their effectiveness.


Daylighting is to use the light of the day for interior illumination. Modern buildings designed to use the light of day usually 40% to 60% less electricity for lighting that the needs of the buildings.

The sunlight and the light of day are free and easily accessible. However, the use of sunlight without causing glare and without overheating and a building may be difficult. The glare can be avoided by using windowsills, walls, louvers, reflecting tents and other devices to reflect light deep in the palace. We need to find and skylights away from direct sunlight to avoid overheating. For example, skylights placing on the north slope of your roof rather than on the southern exposure may reduce transfer of heat. In addition, seek new windows with glass selective transmitting more visible light, while excluding most of solar heat.


Maintenance is essential for lighting efficiency. The light decreases over time because of population ageing and dirty lamps and accessories, lamps, and surfaces. Together, these factors may reduce the total volume of illumination of 50% or more, while the fires continue drawing full power. The maintenance base following suggestions may help prevent.
  • Clean accessories, lamps, glasses and every 6 to 24 months in wiping the dust. However, it is never clean an incandescent bulb while it is switched on. Water cooling effect break the hot bulb.
  • Replace lenses if appear in yellow.
  • Clean or repaint small rooms every year and larger rooms every 2 to 3 years. The dirt deposited on a surface, which reduces the amount of light reflected.
  • Consider relamping group. Fires common, especially incandescent and fluorescent lamps, losing 20% to 30% of their light output during his life. Many experts recommend lighting to replace all the lamps in a lighting system at a time. Save work, maintains high lighting, and avoids stressing weak lamp ballasts.