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December 2009 Archives

150 Hz operating frequency for LED fixtures by DOE challenged

CHALLENGE DOE ENERGY STAR REQUIREMENTS FOR INTEGRAL LED LAMPS

Once Innovations, a Minnesota based research, development and manufacturing company with a firm focus on LED technologies announced today its intent to formally challenge newly finalized ENERGY STAR Eligibility Criteria for Integral LED Lamps.

"We feel that the increase in operating frequency requirements was erroneously based on speculation about visual flicker, which has nothing to do with energy conservation. The new 150 Hz criteria will hinder the introduction of low cost, energy savings AC LED lighting solutions, which is contrary to the goals of the ENERGY STAR program," stated Mr. Zdenko Grajcar, CEO and Chief Technology Officer at Once Innovations.

Grajcar went on to state, "We stipulate that 60 Hz luminous modulation (flicker) is likely to cause certain discomfort in some people. However, the majority of low frequency AC LED systems operate in the rectified mode, which effectively doubles the luminous modulation frequency to 120Hz for 60Hz mains in the United States. Despite many attempts, laboratory investigations have not found statistically significant effects of luminous modulation with frequencies over 100Hz on human performance, health, or comfort. We've collected studies with hundreds of pages of research material that show no evidence other than speculative statistics to support claims that luminous modulation over 100Hz is visible or harmful to human health. This change in frequencies will have a profoundly negative impact on the future of energy efficient lighting in the United States. As such, we feel we have no other choice but to challenge the DOE decision. At the same time, we strongly urge other manufacturers and users of AC LED technologies to do the same. "

"The last minute change to 150 Hz operating frequency raises a stumbling block to new low cost, high efficiency AC LED lighting technology, which promises tremendous energy savings potential in the U.S." added Mr. Craige Thompson, Chief Legal Officer at Once Innovations. Mr. Thompson went on to say, "The increase to 150 Hz appears to be arbitrary and applied in a way that discriminates against new, more efficient LED technologies in favor of other forms of light fixtures. The DOE should examine the relevant facts and articulate a rational connection between the facts and the frequency specification." Mr. Thompson explained, "The electrical grid in the U.S. operates on 60 Hz. Therefore, rectified topologies will operate at 120 Hz modulation. Generating frequencies above 150 Hz is generally much more complex and expensive. Before increasing the frequency requirement to 150 Hz for LED-based fixtures, the DOE should provide an opportunity for notice and comment pursuant to the Administrative Procedure Act."

 
Once Innovations, Inc. is a privately held corporation that manufactures highly differentiated LED lighting using a visionary approach to research and product development - from unique designs with proprietary technologies through final production and distribution. Once was founded in 2008 by current CTO, Zdenko Grajcar, considered a pioneering rebel in LED technology for his remarkably unconventional thinking and relentless challenge to the industry status quo. The Once Innovations technology research, marketing, and product development campus is located in Plymouth, MN United States of America.

FOR MORE INFORMATION CONTACT:
John Moody
E: jmoody@onceinnovations.com
T: +1.763.381.5621
W: www.onceinnovations.com
5455 Highway 169 N
Plymouth, MN 55442
United States of America


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Osram Life-cycle Assessment has concluded that "LED lamps are already today more than five times more efficient than incandescent lamps and future technical achievements offer additional potential for the coming years."

Read the LED life-cycle research! The total LCA also shows that the LED lamp is one of the most environmentally friendly lighting products.

The life-cycle assessment looks at manufacturing, usage and end of life realities.

An OSRAM study monitored the life cycle of an LED and an LED lamp. It´s outcome made it clear - LED lamps need less than 2% of their energy consumption for their manufacture - over 98% are used for their task: illuminating the world.

Click here for more information about this study.

The aim of OSRAM Opto Semiconductors' LCA is therefore to analyse the environmental impact of an LED lamp over its entire life and to compare it with a compact fluorescent lamp and an incandescent lamp. The relevant material and energy supplies were determined in detail for all the LED lamp's components and production processes. Apart from a detailed analysis of each individual production stage, for LED chips and lamp housings, for example, these also include all necessary transports such as the transport of an LED lamp from its production site in China to its place of installation in Europe.

Apart from direct input of raw materials, the energy input, materials and emissions associated with the retrieval of resources are recorded. The results allow for conclusions not only on resource consumption and primary energy input but also acidification, eutrophication, the greenhouse effect, ozone depletion and toxicity.

The bottom line is that LED are efficient

In the first LCA, OSRAM Opto Semiconductors show that LED lamps are a genuine alternative to incandescent lamps, even when considering the cumulative energy input and environmental factors.

Often these fundamentally different lamps were compared based on their wattage. Conventional lamps with filaments are way behind diode lamps. A 40 Watt incandescent lamp, for example, can either be replaced by an 8W compact fluorescent light or, for some applications, by an 8W LED lamp, which means an energy saving of 80 percent.

In order to guarantee the comparability of results in the LCA, a lifetime of 25,000 hours was chosen as reference. The latest LED lamp generation (Parathom Classic A55 with Golden Dragon Plus LED) achieves precisely this rating. Therefore, 25 incandescent lamps (OSRAM Classic A 40W) with a lifetime of 1,000 hours and 2.5 fluorescent lamps (Dulux Superstar Classic A 8W) lasting 10,000 hours have to be used for a comparison.

Over 98 percent of the energy used to produce light

The study was done in collaboration with experts at Siemens Corporate Technology, Centre for Eco Innovations and shows that similar to compact fluorescent lamps with LED-based lamps over 98% of the energy used is consumed to generate light. Less than two percent is allocated to production. This has dismissed any concern that manufacturing of LED particularly might be very energy-intensive. In contrast to the primary energy consumption of incandescent lamps of around 3,300kWh, LED lamps use less than 700kWh. The bottom line is that LED lamps are therefore definitely more efficient than conventional incandescent lamps. Apart from this, the ratings that indicate the lamps' effects on the environment are consistently better than those for incandescent lamps. As the efficiency of LED continues to increase, LED lamps will be capable of achieving even better LCA results in future. Three independent experts are currently verifying the findings of the internal study.

A summary of the study is available at www.osram-os.com/life-cycle-assessment.


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LED Outdoor Lights

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LED outdoor lighting is growing in variety: Signs. Pathways. Architectural accents.  Safety lights. Even moving lights on vehicles!

I'm reminded of the old advertising slogan, "We'll leave the light on for you..."  Ourdoor lights are inviting, functional and have been contributing 24/7 to our national electrical grid load.

LED lights can lighten that load. 

Energy Star rated LED lights are now available to provide energy-saving and eco-friendly lighting.  Other outdoor lighting options are labeled as solar lighting, dark sky lighting, LED lighting, and fluorescent lighting.

Some of the top outdoor LED light features focus on the fixture.  And the long lasting quality of the LED bulbs and fixtures themselves.  Quality matters, especially when the major cost of lighting is embedded in the maintenance costs of changing the bulbs to meet quality lighting requirements.

LED outdoor lights are green -- they bring energy savings, maintenance savings and a simple lighting presence to many existing lighting applications such as track lighting, recessed lighting and landscape lighting.

Types of LED outdoor lights include:

Outdoor lighting fixtures
Outdoor lighting strips
Outdoor lighting spotlights
Outdoor lighting floods
Path / walkway lights
Solar LED lights
Well lights
Pagoda lights

Outdoor message centers

 Some of the Energy Star rated brands available for outdoor lighting include:

Great Outdoors by Minka
Murray Feiss
Hinkley Lighting
Kichler
Sea Gull Lighting
TransGlobe
Triarch Lighting
Maxim Lighting
Craftmade
Golden Lighting
Kenroy Home
Thomas Lighting
TransGlobe
Quoizel
Westinghouse
Forecast Lighting
Thomas Lighting
Dolan Designs
Craftmade
Triarch Lighting
Troy Lighting
Progress Lighting
Kenroy Home
Maxim Lighting
Elk Lighting



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