Navigation Links
Queen's researchers shine light on compact fluorescent bulb problems
Date:4/7/2009

Kingston, ON Long touted as an energy-saving alternative for home lighting, compact fluorescent lightbulbs (CFLs) now have the potential to be even more efficient, as well as dimmable, thanks to research at Queen's University.

Adopted by householders as a longer-lasting, energy efficient alternative to the traditional incandescent lightbulb, compact fluorescents consume one-third of the power and last 1,000 times longer than incandescent bulbs.

However, the Queen's researchers were motivated to solve two problems with CFLs they don't work with dimmer switches, and, more importantly, their energy efficiency is compromised because of a problem known as poor power factor. In effect, only part of the energy a CFL consumes is used to power the bulb, resulting in wasted power.

"Consumer-grade CFLs need to be compact and inexpensive. Until now, the complicated circuitry needed to power these bulbs most efficiently has been too large and too costly for consumer-grade compact fluorescents," says professor of Electrical and Computer Engineering Praveen Jain, Canada Research Chair in Power Electronics and a world expert on electronic power supplies. "In its current form, the household CFL takes away the very benefit to the power grid that it was supposed to provide."

The Queen's innovation is timely, Dr. Jain adds, since widespread use of today's less efficient CFLs would reduce expected benefits to the global power grid. Many countries, including Australia and the European Union, have already begun phasing out incandescent bulbs in favor of the compact fluorescents. (Europe and Asia have established minimum standards for power factor for CFLs over 25 watts, but Canada and the U.S., which plan to ban incandescent by 2012, have not.)

The global market for compact fluorescents is estimated at $80 billion.

The poor power factor already has had an impact on commercial users of CFLs, who are charged for the extra power consumed by the current compact fluorescents. As for dimmability, Dr. Jain says it too is an efficiency issue and not just a nuisance for consumers. "In fact, when a CFL is used with a dimmer switch, its bulb can burn out sooner than expected," he says.

The solutions emerged when John Lam, a PhD candidate working with Dr. Jain, developed a compact, simplified circuitry and controller design that overcomes the power problem while also meeting consumers' need for a dimmable, inexpensive CFL. "Understanding the significance of the problem motivated me to work hard at finding a solution," Mr. Lam says.

The two main challenges were making the technology directly replaceable with existing designs, and economical to produce, says Dr. Jain. "We were able to develop a more power-efficient, dimmable and cost-effective CFL technology that can truly replace the power-hungry incandescent light bulbs. This makes it very attractive to the consumer market."

The work was carried out at Queen's Centre for Energy and Power Electronics Research (EPowER), which tackles key problems in the area of energy conservation and brings those solutions to industry.

PARTEQ Innovations, the technology transfer office of Queen's, will work with major CFL manufacturers to bring the technology to market.

"This is an excellent example of university research providing an innovative solution well in advance of a potential market problem," says John Molloy, President and CEO of PARTEQ. "The key to providing useable innovation is understanding the problems of existing technology and finding elegant solutions. Here we have a motivated researcher who saw a key problem and delivered the solution to an industry in need, in time to make a difference."


'/>"/>

Contact: Jeff Drake
jeff.drake@queensu.ca
613-533-2877
Queen's University
Source:Eurekalert  

Related biology news :

1. For honey bee queens, multiple mating makes a difference
2. Researchers identify proteins involved in new neurodegenerative syndrome
3. Texas researchers and educators head for Antarctica
4. MGH researchers describe new way to identify, evolve novel enzymes
5. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
6. U of MN researchers discover noninvasive diagnostic tool for brain diseases
7. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
8. Researchers discover new strategies for antibiotic resistance
9. Researchers find new taste in fruit flies: carbonated water
10. Binghamton University researchers investigate evolving malaria resistance
11. UIC researchers find promising new targets for antibiotics
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Queen's researchers shine light on compact fluorescent bulb problems
(Date:3/23/2017)... , March 23, 2017 The report "Gesture Recognition ... Biometric), Industry, and Geography - Global Forecast to 2022", published by MarketsandMarkets, the ... a CAGR of 29.63% between 2017 and 2022. ... ... ...
(Date:3/22/2017)... Calif. , March 21, 2017 ... analytics company serving law enforcement agencies, announced today the ... as director of public safety business development. ... diversified law enforcement experience, including a focus on the ... In his most recent position, Mr. Sheridan served as ...
(Date:3/13/2017)... 2017 Future of security: Biometric Face Matching software  ... ... DERMALOGs Face Matching enables to match face pictures against each other or ... individuals. (PRNewsFoto/Dermalog Identification Systems) ... "Face Matching" is the fastest software for biometric Face Matching on the market. ...
Breaking Biology News(10 mins):
(Date:4/27/2017)... ... April 27, 2017 , ... Volunteers supported by ... researchers, engineers, and industry professionals in visiting U.S. Congressional offices in Washington, D.C., ... the world photonics industry. , This year, National Photonics Initiative (NPI) ...
(Date:4/27/2017)... 27, 2017  Kinexum, a distinguished resource for research, ... the appointment of Thomas C. Seoh as ... M.D., Kinexum founder, who becomes Executive Chairman and will ... clients. Thomas Seoh commented, "I ... mission and lead the firm,s remarkable team of life ...
(Date:4/26/2017)... ... April 26, 2017 , ... Led by ex-FDA official ... trials comes to Tampa, San Francisco and Boston in 2017. The 2016 ... organizations such as Pfizer Inc., Teva Pharmaceuticals, Advaxis, Inc., Ocular Therapeutix Inc., Cell ...
(Date:4/26/2017)... ... April 26, 2017 , ... NextSteps 2017, NetDimensions’ annual global ... this May on the following dates: , ?    London, UK from May 10-11, ... Learning and Performance Institute will be the opening keynote speaker at the ...
Breaking Biology Technology: