Light-emitting diodes (LEDs) are semiconductor devices that convert electricity into light. They do not depend on a filament or fluorescent tubes and are more durable, and consume 90% less power than incandescent bulbs at low cost.
Why The Fuss About Energy Efficiency?
- Energy efficiency is too good for the atmosphere.
- Energy efficiency is increasingly making business sense and makes for a better return on investment.
- Energy efficiency is improving global economies and creating jobs
- This is also efficiency has the potential to improve the overall quality of life.
Major Benefits of LED
- LED lights use less electricity and have a longer lifespan and save your money in the long-term.
- Led Lights can last up to 40 years. That’s 14,600 days and 58,400 hours over that time period.
- Led lights have a longer-lifespan, once again saving you time and money.
- Led Lights can produce bright, good quality light in any color.
- Led bulbs are easier to dispose of because they do not contain any hazardous material.
LED Energy Savings
The average household in the UK has 27 light bulbs in it (not counting those on the cooker, in the fridge, etc), Mostly halogens and CFLs. The electricity consumption is 465kw, costing about 70 Euro pa and representing 14% of the average electricity bill.
Measuring LED Usage:
Watts Versus Lumens
The Brightness of LEd lights is measured differently to other light fittings
LUMENS
- Measures light’s actual brightness.
- By contrast, wattage is a measurement of how much electricity a bulb uses.
- The effectiveness of an LEd bulb is best expressed in its lumens-to-watt ratio (the number of lumens produced for each watt consumed).
WATTAGE
- Measures how much electricity a bulb draws.
- Traditionally used measure the output of incandescent bulbs.
- A 60W incandescent bulb is worth a 6W LED.
LED Versus The Others
CFL Bulbs
CFL was the more commonly purchased form of energy saving light until the arrival of LED.
However, CFL bulbs will generally generate more hear than LEd bulbs and take longer to warm up.
LEDs are now much cheaper than CFL and other models of fluorescent bulbs.
Features
- CFL use up to 60-80% energy than incandescent lamps Versus LED’s 90%
- Lasts almost 10 times longer than incandescent bulbs.
- Produces less heat.
- They have a lifespan of about 10,000 hours.
Halogen Incandescent Bulbs
Halogen bulbs are the closest you can get to old-fashioned incandescent bulbs in terms of lighting quality.
Features
- Halogen bulbs typically last 2,000 hours and roughly 2 years
- They come in a variety of colors and can instantly emit light.
- They are less energy-efficient and less long-lasting than either LED or CFL.
Lights Bulbs Savings Comparison
| CFL | |
|---|---|
| Life Span | 10,000 Hrs |
| Watts /60 watts bulbs (Energy consumed) | 13 Watts |
| Bulb Lumens (Brightness) | 900 Lumens |
| KWh used over 25,000 | 325 Kwh |
| No. of bulbs needed for 25,000 | Hrs 2.5 Bulbs |
| LED | |
|---|---|
| Life Span | 25,000 Hrs |
| Watts /60watts bulbs (Energy consumed) | 7 Watts |
| Bulb Lumens (Brightness) | 850 Lumens |
| KWh used over 25,000 | 175 Kwh |
| No. of bulbs needed for 25,000Hrs | 1 Bulbs |
| Incandescent | |
|---|---|
| Life Span | 1,000 Hrs |
| Watts /60watts bulbs (Energy consumed) | 43 Watts |
| Bulb Lumens (Brightness) | 785 Lumens |
| KWh used over 25,000 | 1,075 Kwh |
| No. of bulbs needed for 25,000 | Hrs 25 Bulbs |
We hope this analysis will help you choose the right bulbs for your home and office lighting. Share your review and comments about this technology, thank you!
