Category “LED Advantages”

LEDs versus CFLs Round 6

Monday, 13 September, 2010

In my series of LEDs versus the world, we find that in the matchup of LEDs versus CFLs the LED holds a nice 6-1 lead. Other than initial cost,  LEDs win out in overall savings, looks, longevity, versatility and electricity usage. The final category of environmental safety is where the LED really shines. Since LEDs do not contain anything hazardous if you break one there is a two step process:

1) Say loudly “Dang it”

2) Throw away broken LED

Since the CFL contains Mercury If you break one there are at least 9 steps to clean up(outlined below). Even if you follow these 9 steps there is no guarantee that you have cleaned up all the Mercury. This is the elephant in the room we try to sweep under the rug. I am constantly told that using CFLs decrease Mercury pollution and that there really isn’t that much Mercury in them anyway. These are both true statements…kinda. Overall, worldwide mercury pollution will decrease, as incandescent light bulbs are phased out. However Mercury levels would be far, far lower if LEDs were used. The second concept of CFLs not having much Mercury in them is also relative. We will see worldwide levels decreasing however the level of Mercury found in individual homes is rising fast.

There is only about 4 milligrams of Mercury in a CFL. This is a small amount except when you figure that even at very low exposure(in the range 0.7–42 μg/m3) it has been shown in case control studies to cause effects such as tremors, impaired cognitive skills, and sleep disturbance. In an average home with 2.3 children how many light bulbs are broken yearly? Even with good cleanup procedures in your home you may find some of your rooms(likely children’s rooms or where they play) have constant low concentrations of Mercury that are completely unseen yet still effecting your family. Clean up procedure are listed below, these procedures alone should have you out buying LEDs. The worst one is the very last(future cleaning of carpet) since common sense tells me it will only be followed one time in a thousand accidents.

Before Cleanup: Air Out the Room

Have people and pets leave the room, and don’t let anyone walk through the breakage area on their way out.

  • Open a window and leave the room for 15 minutes or more.
  • Shut off the central forced-air heating/air conditioning system, if you have one.

Cleanup Steps for Hard Surfaces

  • Carefully scoop up glass pieces and powder using stiff paper or cardboard and place them in a glass jar with metal lid (such as a canning jar) or in a sealed plastic bag.
  • Use sticky tape, such as duct tape, to pick up any remaining small glass fragments and powder.
  • Wipe the area clean with damp paper towels or disposable wet wipes. Place towels in the glass jar or plastic bag.
  • Do not use a vacuum or broom to clean up the broken bulb on hard surfaces.

Cleanup Steps for Carpeting or Rug

  • Carefully pick up glass fragments and place them in a glass jar with metal lid (such as a canning jar) or in a sealed plastic bag.
  • Use sticky tape, such as duct tape, to pick up any remaining small glass fragments and powder.
  • If vacuuming is needed after all visible materials are removed, vacuum the area where the bulb was broken.
  • Remove the vacuum bag (or empty and wipe the canister), and put the bag or vacuum debris in a sealed plastic bag.

Cleanup Steps for Clothing, Bedding and Other Soft Materials

  • If clothing or bedding materials come in direct contact with broken glass or mercury-containing powder from inside the bulb that may stick to the fabric, the clothing or bedding should be thrown away. Do not wash such clothing or bedding because mercury fragments in the clothing may contaminate the machine and/or pollute sewage.
  • You can, however, wash clothing or other materials that have been exposed to the mercury vapor from a broken CFL, such as the clothing you are wearing when you cleaned up the broken CFL, as long as that clothing has not come into direct con tact with the materials from the broken bulb.
  • If shoes come into direct contact with broken glass or mercury-containing powder from the bulb, wipe them off with damp paper towels or disposable wet wipes. Place the towels or wipes in a glass jar or plastic bag for disposal.

Disposal of Cleanup Materials

  • Immediately place all clean-up materials outdoors in a trash container or protected area for the next normal trash pickup.
  • Wash your hands after disposing of the jars or plastic bags containing clean-up materials.
  • Check with your local or state government about disposal requirements in your specific area. Some states do not allow such trash disposal. Instead, they require that broken and unbroken mercury-containing bulbs be taken to a local recycling center.

Future Cleaning of Carpeting or Rug: Air Out the Room During and After Vacuuming

  • The next several times you vacuum, shut off the central forced-air heating/air conditioning system and open a window before vacuuming.
  • Keep the central heating/air conditioning system shut off and the window open for at least 15 minutes after vacuuming is completed.

Know The Pros and Cons of LEDs

Sunday, 12 September, 2010

Advantages

  • Efficiency: LEDs produce more light per watt than incandescent bulbs. Their efficiency is not affected by shape and size, unlike Fluorescent light bulbs or tubes.
  • Color: LEDs can emit light of an intended color without the use of the color filters that traditional lighting methods require. This is more efficient and can lower initial costs.
  • Size: LEDs can be very small (smaller than 2 mm2) and are easily populated onto printed circuit boards.
  • On/Off time: LEDs light up very quickly. A typical red indicator LED will achieve full brightness in under a microsecond. LEDs used in communications devices can have even faster response times.
  • Cycling: LEDs are ideal for use in applications that are subject to frequent on-off cycling, unlike fluorescent lamps that burn out more quickly when cycled frequently, or HID lamps that require a long time before restarting.
  • Dimming: LEDs can very easily be dimmed either by pulse-width modulation or lowering the forward current.
  • Cool light: In contrast to most light sources, LEDs radiate very little heat in the form of IR that can cause damage to sensitive objects or fabrics. Wasted energy is dispersed as heat through the base of the LED.
  • Slow failure: LEDs mostly fail by dimming over time, rather than the abrupt burn-out of incandescent bulbs.
  • Lifetime: LEDs can have a relatively long useful life. One report estimates 35,000 to 50,000 hours of useful life, though time to complete failure may be longer. Fluorescent tubes typically are rated at about 10,000 to 15,000 hours, depending partly on the conditions of use, and incandescent light bulbs at 1,000–2,000 hours.
  • Shock resistance: LEDs, being solid state components, are difficult to damage with external shock, unlike fluorescent and incandescent bulbs which are fragile.
  • Focus: The solid package of the LED can be designed to focus its light. Incandescent and fluorescent sources often require an external reflector to collect light and direct it in a usable manner.
  • Low toxicity: LEDs do not contain mercury, unlike fluorescent lamps.

Disadvantages

  • Some Fluorescent lamps can be more efficient.
  • High initial price: LEDs are currently more expensive, price per lumen, on an initial capital cost basis, than most conventional lighting technologies. The additional expense partially stems from the relatively low lumen output and the drive circuitry and power supplies needed.
  • Temperature dependence: LED performance largely depends on the ambient temperature of the operating environment. Over-driving the LED in high ambient temperatures may result in overheating of the LED package, eventually leading to device failure. Adequate heat-sinking is required to maintain long life. This is especially important when considering automotive, medical, and military applications where the device must operate over a large range of temperatures, and is required to have a low failure rate.
  • Voltage sensitivity: LEDs must be supplied with the voltage above the threshold and a current below the rating. This can involve series resistors or current-regulated power supplies.
  • Light quality: Most cool-white LEDs have spectra that differ significantly from a black body radiator like the sun or an incandescent light. This can cause the color of objects to be perceived differently under cool-white LED illumination than sunlight or incandescent sources. However, the color rendering properties of common fluorescent lamps are often inferior to what is now available in state-of-art white LEDs.
  • Area light source: LEDs do not approximate a “point source” of light, but rather a pin point distribution. So LEDs are difficult to use in applications requiring a spherical light field. LEDs are not capable of providing divergence below a few degrees. This is contrasted with lasers, which can produce beams with divergences of 0.2 degrees or less.
  • Blue hazard: There is a concern that blue LEDs and cool-white LEDs are now capable of exceeding safe limits of the so-called blue-light hazard as defined in eye safety specifications such as ANSI/IESNA RP-27.1-05: Recommended Practice for Photo-biological Safety for Lamp and Lamp Systems.
  • Blue pollution: Because cool-white LEDs (i.e., LEDs with high color temperature) emit proportionally more blue light than conventional outdoor light sources such as high-pressure sodium lamps, the strong wavelength dependence of Rayleigh scattering means that cool-white LEDs can cause more light pollution than other light sources. The International Dark-Sky Association discourages the use of white light sources with correlated color temperature above 3,000 K

See How To Save $10,000

Tuesday, 6 July, 2010

LED PAR30 70-75 watt equivalent (50,000 hrs) vs. PAR30 Halogen 75 watt (3,000 hrs)

Our brand new state of the art long life LED light bulbs are perfect for anyone looking to save energy or the environment . They are every bit as bright as your old wasteful lights but use only one fourth of the electricity and last 17 times longer. These two factors add up over time and show there is another huge advantage… they can save you some serious money!

The average home has 30 light bulbs, replacing them with our new LED Lights will save you: $14,660.59 over their life span(50,000 hours).

Current Bulb Wattage for Halogen 75
Unit Bulb Per Unit Cost $7.99
Number of Bulbs in use 30
Lifetime of Bulbs (hours) 3,000
Total Number of Bulbs over lifetime of LEDs 499
Total Bulb Replacement Cost $3,987.01
Total Bulb Replacement Cost Savings $1.887.31
   
Current LED Wattage Equivalent 75
LED Replacement – Actual Wattage 19
 

LED Per Unit Cost

$69.99
Number of LED Bulbs in use 30
Lifetime of LED lamps (hours) 50,000
Initial Investment for New/LED Replacement $2099.70
   
Average Hours of Daily Use (hours) 8
Utility Rate for State of California $0.0995/KW
   
Current electricity cost per month $82.24
Electric cost using LED per month $20.83
Energy saving per month $61.41
   
Total ENERGY SAVINGS on LED Investment $12,773.28
Total Bulb Replacement Cost Savings $1.887.31
TOTAL SAVINGS WITH LED LAMPS $14,660.59

Advantages of LED

Friday, 28 May, 2010

Nothing has greater impact than lighting! Lighting influences the appearance, tone and impression of every object and space. The nature of light shapes our vision. Lighting technology has come a long way since the invention of Edison’s light bulb.

Light Energy Designs is dedicated to bringing cutting-edge technology to our clients.

  • Connect up to 125 strings of lights (half a mile) using just one plug
  • Reliability-Solid, one piece construction
  • L.E.D. lights last for up to 200,000 hours (22 years)
  • Constructed using 20-gauge wire
  • Saves you up to 98% on electricity bills
  • Never gets hot making them more fire safe
  • Rust proof, Zinc-coated lamp contacts
  • Uses standard outlets (120 VAC, 60 HZ)
  • No transformer required
  • No glass bulbs to break, solid epoxy lenses
  • Backed by a 2 year warranty on all manufacturer defects
  • Uses less than 2% of the electricity of an incandescent.

As our population continues to grow, it is necessary that we find ways to help our environment and conserve energy. We are excited to be able to provide a product that benefits our planet. Replacing old incandescent string lights with our advanced technology, puts less waste in our landfills and conserves enormous amounts of energy, while saving you up to 98% on your energy bills. This adds up to hundreds, if not thousands of dollars over the course of several years.