Archive for November, 2009

LEDs: Up, Up and Away! at ElementalLED – LED Lights & Lighting Blog

If anybody out there still questions the technology behind LEDs, here’s yet another reason to stop doubting. LEDs are joining the ranks of some of the most sophisticated technological innovations known to man; we’re talking man-on-the-moon and ice-on-mars stuff. That’s right; LEDs are going to outer space. NASA has agreed to a two-year commitment with Lighting Science (an LED manufacturer) to develop a “high illumination and good color rendering LED light fixture for space exploration,” according to a Lighting Science Corporation press release.

It’s only fitting then that LEDs are the chosen light source to accompany man into the ethers. After all, their long lasting, high quality and durable attributes make them perfect for space travel. LEDs can withstand extremes of both high and low temperatures, and their smooth dimming and color-changing capabilities make them easily adaptable to the ever-changing conditions of space. The NASA-grade LED prototype will be developed to meet standards for space travel in such areas as “control, vibration, off-gassing, electromagnetic interference and other spacecraft issues.” One of NASA’s goals for the LED fixture is that it help them learn how to aid astronauts in establishing and maintaining healthy sleep patterns in space, a notoriously difficult task. Fred Maxik of Lighting Science says, “We hope to not only improve circadian rhythm management for our astronauts but, also to learn something that will help the millions of people who struggle with these issues here on Earth.”

You don’t have to journey into the unknown with NASA to benefit from LED Lighting. A significant amount of electricity can be saved by utilising LED Lights in place of your existing lighting technology. LED Lighting may require a more substantial investment initially, but with many years of maintenance free operation and low electricity usage, pay back can usually be achieved within 2 years.

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LED lighting is (almost) there | ECO BROOKLYN INC. – Brooklyn …

LED lighting is (almost) there

November 14, 2009

Here is an interesting cost comparison between LED, CFL and incandescent. I have not checked the numbers but they seem pretty accurate. They clearly show that over the life of the bulb it makes a lot of sense to buy LED.

What the numbers do not show are the quality. I’ve tried a lot of the LEDs on the market and they still lack the quality of an incandescent. One of my colleagues says he saw a blind test where people preferred CFL lighting over incandescent and I can understand that. Some of the CFL’s available now are really great.

But the LEDs I’ve tested still have issues. The multi diode with refractory lense ones are the best but they still feel very white “spotlight”. They are getting damn close, though. And for an increasing number of home applications they are by far the best choice.

Sort of on a tangent, one of the clear benefits of using good LEDs in a Brooklyn brownstone that has old electrical wiring is that they decrease the electrical load on the house. This means less runs down to the basement to switch the circuit breaker back on!

When Eco Brooklyn does a green renovation on a Brooklyn brownstone one of the first things we do is address the electrical load on the house. Energy star appliances, timers, dimmers, LEDs or CFLs all reduce the load directly. Insulation, passive solar heating, and good air design reduce the load indirectly since you don’t need the electric heater or air conditioner as much.

Anyway, below is a great breakdown of costs from EarthEasy.com

Cost Comparison between LEDs, CFLs and Incandescent light bulbs

LED CFL Incandescent
Light bulb projected lifespan
50,000 hours
10,000 hours
1,200 hours
Watts per bulb (equiv. 60 watts)
6
14
60
Cost per bulb
$35.95
$3.95
$1.25
KWh of electricity used over
50,000 hours
300
700
3000
Cost of electricity (@ 0.20per KWh)
$60
$140
$600
Bulbs needed for 50k hours of use
1
5
42
Equivalent 50k hours bulb expense
$35.95
$19.75
$52.50
Total cost for 50k hours
$95.95
$159.75
$652.50
Energy Savings over 50,000 hours, assuming 25 bulbs per household:
Total cost for 30 bulbs
$2398.75
$3993.75
$16,312.50
Savings to household by switching
from incandescents
$13,913.75
$12,318.75
0

“LED light bulbs will eventually be what we use to replace incandescent bulbs – CFLs are a temporary solution to energy-efficient lighting. The reason LEDs have not yet displaced CFLs from the market are twofold: the first generation LED bulbs had a narrow and focused light beam, and the cost of the LED bulbs was too high.

Recent developments in LED technology, however, have been addressing these issues. LEDs have been ‘clustered’ to provide more light, and mounted within diffuser lenses which spread the light across a wider area. And advancements in manufacturing technology have driven the prices down to a level where LED bulbs are more cost-effective than CFLs or incandescent bulbs. This trend is continuing, with LED bulbs being designed for more applications while the prices are going down over time.

The ’sticker shock’ of the new LEDs remains a deterrent to their widespread acceptance by consumers. The following comparison charts illustrate the value of the latest LED bulbs when compared with CFLs and incandescents for overall efficiency as well as cost-effectiveness.”

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This article provides further evidence showing how a significant amount of electricity can be saved by utilising LED Lights in place of your existing lighting technology. LED Lighting may require a more substantial investment initially, but with many years of maintenance free operation and low electricity usage, pay back can usually be achieved within 2 years. You should also consider the government incentives that are now available to assist with these investment costs – you could be cash flow positive fro the day your new lights are switched on.

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Coffee chain adopts LED lighting

A certain eco-conscious purveyor of roasted beans (rhymes with dar-nucks) has announced plans to adopt solid state lighting in more than 8,000 stores by the end of next year. Utilizing GE lighting solutions, Starbucks has already “converted” more than 1,000 U.S. locations, with plans to address the international market in March 2010.

According to Michael Petras, president and CEO of GE Consumer & Industrial’s lighting and electrical business, “Starbucks (sic) aggressive moves on the conservation front will have far-reaching environmental and financial impacts. Other GE customers will benefit from these achievements.”

Owing to the LED conversion, Starbucks projects a 7% worldwide reduction in energy use. Ultimately, the company is aiming for a 25% reduction by the end of 2010.

Just like Starbucks, every business and individual can play their part in the fight against climate change. A significant amount of electricity can be saved by utilising LED Lights in place of your existing lighting technology. LED Lighting may require a more substantial investment initially, but with many years of maintenance free operation and low electricity usage, pay back can usually be achieved within 2 years. Government funding initiatives are now available that can enable electricity cost reductions on implementation of the low energy lights.

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Wal-Mart Adding LED Lights to 650 Stores · Environmental Leader · Green Business, Sustainable Business, and Green Strategy News for Corporate Sustainability

Wal-Mart Stores Inc. plans to use LED lights inside 650 new and renovated stores.

Cree Inc. has been selected to handle the installation, which involves replacing ceramic metal halide in the produce and electronics department, according to a press release.

Wal-Mart is going with Cree’s LRP-38, a PAR38 style LED lamp, which is designed to last 50,000 hours and consume 82 percent less energy than the 70-watt ceramic metal halide bulbs it replaces.

The lighting retrofit comes as part of Wal-Mart’s Project Impact, which will see through a remodeling and repositioning of many locations. Wal-Mart already has remodeled about 30 percent of U.S. stores and plans to have remodeled or built out 70 percent of its stores to the new standard by 2012.

Wal-Mart is looking to a host of options as it seeks to reduce energy use.

Wal-Mart’s goal to double the amount of solar power it uses over the next 18 months. In April, Wal-Mart installed solar at 18 Wal-Mart and Sam’s Club stores, along with two warehouses in California and Hawaii. It also has rooftop installations underway at 10 to 20 stores and distribution centers in California.

The company also has added solar to facilities in Puerto Rico.

Everyone can emulate Wal-Mart in this way. A substantial amount of electricity can be saved by implementing LED Lights in place of your existing lighting technology. LED Lighting may require a more substantial investment initially, but with many years of maintenance free operation and low electricity usage, pay back can usually be achieved within 2 years.

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