why are cfls more efficient?
238343
Although initially more expensive, you save money in the long run because CFLs use 1/3 the electricity and last up to 10 times as long as incandescents. A single 18 watt CFL used in place of a 75 watt incandescent will save about 570 kWh over its lifetime. At 8 cents per kWh, that equates to a $45 savings.
923164
LED bulbs require less wattage to run so that you will use less electricity to power the same number of lights over standard string lights. This can save you up to 80% on your electric bill this season when compared to regular Christmas lights. This is a benefit for those who like to create a large display.
1188160
CFLs produce light differently than incandescent bulbs. ... In a CFL, an electric current is driven through a tube containing argon and a small amount of mercury vapor. This generates invisible ultraviolet light that excites a fluorescent coating (called phosphor) on the inside of the tube, which then emits visible light.
712334
Compact fluorescent bulbs are vastly more efficient. They use up to 75 per cent less energy than incandescent bulbs, which means reduced greenhouse gas emissions from energy plants. Fluorescent bulbs also last up to 10 times longer.
464272
Incandescent bulbs and halogen bulbs have the highest wattage, making them less energy-efficient choices. CFL bulbs use fewer watts, but LED bulbs are the real winner in energy efficiency—an 8 or 9-watt LED bulb emits as much light as a 60-watt incandescent bulb.
1026175
A good LED is about 80% efficient. The extra 20% is converted to heat. Efficiency also depends very much on the quality of the LED and this can vary by 200% between manufacturers. ... A higher efficiency, will produce more light per watt, and cost less to run, relative to the amount of light produced.
1241730
LED lights are more efficient than fluorescent lights, but they also produce a fair amount of light in the blue spectrum. Richard Hansler, a light researcher at John Carroll University in Cleveland, notes that ordinary incandescent lights also produce some blue light, although less than most fluorescent lightbulbs.
118109
1. DC power is significantly more energy efficient than AC power. DC motors and appliances have higher efficiency and power to size characteristics. DC-based lighting (LED) is as much as 75% more efficient than incandescent lighting.
107197
CFL, or compact fluorescent light bulbs, are commonly found in most homes today. To use a CFL bulb on a dimmer switch, you must have a CFL bulb that's specifically made to work with dimmers and dimmer switches. Several manufacturers, such as GE, make a dimming compact fluorescent light bulb.
1250613
In a CFL, an electric current is driven through a tube containing argon and a small amount of mercury vapor. ... CFLs need a little more energy when they are first turned on, but once the electricity starts moving, CFLs use about 70% less energy than incandescent bulbs.
1010666
CFLs are fluorescent lamps that emit light from a mix of phosphors inside the bulb, and were designed to replace incandescent lamps (a lamp that produces light as a result of being heated). ... A light-emitting diode, or LED for short, is a lamp that emits light in a very narrow band of wavelengths.
371712
All compact fluorescent (CFL) bulbs require a ballast, which is often integrated. All HID bulbs require a ballast, which is sometimes integrated. No LED bulbs require a ballast, although some are engineered to work with an existing ballast. ... Incandescent and halogen lamps do not require a ballast.
1458380
The main advantage of low voltage lighting is that its low voltage allows the filament of the light bulb to be smaller, and this allows users to put lighting applications in smaller places.
1273697
Not all LEDs are the same Unlike Compact Fluorescent Lamps (CFLs), LEDs are currently not regulated for energy efficiency – or characteristics such as colour. This means you may experience greater variation in their performance.
1207561
CFLs are up to four times more efficient than incandescent bulbs. You can replace a 100-watt incandescent bulb with a 22-watt CFL and get the same amount of light. CFLs use 50- to 80-percent less energy than incandescent lights. ... Just one bulb can reduce a half-ton of CO2 from the atmosphere over the life of the bulb.
764126
All compact fluorescent lamps require a slight warm-up time for the electrical current to fully heat the cathodes and reach their full lumen output. ... Covered CFLs typically have longer warm-up times – up to three minutes – because they have amalgam.
85136
The large variance between an LED bulb and, say, a halogen bulb wattage is the reason LEDs are so much cheaper to run. ... This means that the LED spot uses 90% less electricity to run and therefore it costs 90% less. We have 6W Led bulbs that are replacements for 60W halogen bulbs, again saving 90% energy and cost.