Design Con 2015

LED Lighting: Market Changer or Mere Green Badge?

NO RATINGS
1 saves
View comments: newest first | oldest first | threaded
Page 1 of 2   Next >   Last >>
Hardcore
User Rank
Supply Network Guru
Re: I Just Want to Know...
Hardcore   5/4/2011 9:47:22 PM
NO RATINGS

 

 

Problem is,


That these figures are complete nonsense...., there are far too many websites & people stating that using it for so many hours a day is the same as years of life, but that is what you get from  websites that are advertising 'shills'.

Lets take this nonsense to an absolute extreme, if I use my LED light for 1 minute a year then it will last  25,000 years....,  and if I never use it, then it will last for longer than the age of the Earth.

Unfortunately many of these so called 'experts' have no background or understanding of electronics, they fail to take into account, aging of components and industry standard mortality figures, not to mention most of these designs contain electrolytic capacitors, these capacitors are liquid based technology, as a result they tend to dry out, especially when subjected to the extremes of heat and cooling.

Simply taking the lifetime figures of a single components  and then applying it to al the other parts in a product design is ludicrous, the reality is that in its simplest form the product has a lifetime equivalent to the  component with the LOWEST lifetime in the design  minus any aging effects due to power cycling & temperature conditions.

 


HC

 

 

 

 

 

 

 

 

 

 

 

Ariella
User Rank
Supply Network Guru
Re: I Just Want to Know...
Ariella   5/4/2011 6:35:07 PM
NO RATINGS

Today  I saw a blog post on LED lights. The writer concludes that LED lights are worthwhile and likes the idea of not having to change a light bulb for 23 years: If you add this up over the 23 year lifespan of the LED bulb, it looks pretty compelling. The LED bulb would cost $20.70 to operate while the incandescent bulb would cost $110.40 over the same  23 year period.




SP
User Rank
Supply Network Guru
Re: I Just Want to Know...
SP   5/1/2011 12:14:08 AM
NO RATINGS

Me too.

 But I feel this tube will be using lot of materials that is not really green. Wont the amount of waste generated by LED tube be more than a conventional tube light?

tirlapur
User Rank
Supply Network Guru
Re: Other Benefits of LED Lighting
tirlapur   4/29/2011 4:04:19 AM
NO RATINGS

"lighting had been replaced with LED lighting, the cooling costs were reduced dramatically"


Interesting point Matt. We never consider cooling costs when we compare fluorescent lighting with LED lighting. Any idea by how much percentage the cooling costs got reduced ?


Matt Staben
User Rank
Stock Keeper
Other Benefits of LED Lighting
Matt Staben   4/28/2011 8:11:16 PM
NO RATINGS

One other benefit of LED lighting that may be overlooked (though obvious) is that the heat output is reduced requiring less cooling.  On the other hand, we won't get to turn on all our incandescents to stop the pipes from freezing when the furnace dies (once LED lighting is ubiquitous).

For example, one person I know of was hired to replace the fluorescent lighting in the refrigerated displays at a grocery store - which prior to the changeover required a substantial amount of energy to remove the heat generated by the lighting.  It turned out that after the lighting had been replaced with LED lighting, the cooling costs were reduced dramatically - so much more than expected that the pay-off is expected to occur within a much shorter time than originally calculated.

Of course, there's drawbacks - LED based traffic lights for instance won't melt snow - there's already been accidents reported due to not being able to see which light was on - but this is just a re-engineering problem.

 

TaimoorZ
User Rank
Supply Network Guru
Cost savings?
TaimoorZ   4/28/2011 6:48:28 PM
NO RATINGS

A typical household tube-light is rated to be between 30 and 40 Watts as opposed to 18 W for the LED light. There doesn't seem to be much savings in the cost through reduced power consumption especially if you consider the ultra high initial cost. What would make customers buy LED based lights then?

BulbsBoss
User Rank
Stock Keeper
Re: LED T8s still require improvement
BulbsBoss   4/28/2011 2:02:27 PM
NO RATINGS

As I mentioned, LED replacements for fluorescent T8 still need a lot of improvement before they are truly viable replacements.  On the other hand, LED replacements for PAR halogen have become commercially viable.  Though still relatively expensive, the cost has dropped nearly 50% in the past 12-18 months from many of our suppliers.  Of equal importance is the improved performance.  A 17 watt LED PAR from Philips delivers 930 lumens and is arguably equivalent to a 75 watt PAR halogen.  The LED costs ten times more than the halogen but lasts 18 times longer. 

When we run the numbers it still doesn’t make much sense for a residential customer who may have the light on for just 10 hours per week – the payback is over 10 years.  On the other hand, Bulbs.com services retail and restaurant clients who are burning lights for 90-100 hours per week – their payback on a $70 LED PAR is less than 18 months.

The cost is coming down and it won’t take long for even higher performing LEDs to drop in price by another 50%.  As a consumer I’d wait a little longer to make the purchase.  However, if I’m operating a commercial property where the lights are on more than 10 hours per day, I’m sampling some LEDs now and talking to my utility provider to learn if any rebates are available to offset some of the cost.

Here is an easy to use energy calculator you may find useful - http://www.bulbs.com/resources/energycalc.aspx

Himanshugupta
User Rank
Supply Network Guru
Re: LED T8s still require improvement
Himanshugupta   4/28/2011 1:32:00 PM
NO RATINGS

Thanks Mike for your comments. I am curious about LED future. Everywhere i read, there is so much talk about LED being the future replacement of bulbs and flourescent tubes. And that future is predicted in next 2-3 years. Most of todays LED growth is due to LCD backlighting as manufacturers can cover the additional costs of LED. But if the LED lighting solutions are comparatively expensive than the currently available lighting solution then there will not be much demand. Right?

jbond
User Rank
Supply Network Guru
re:
jbond   4/28/2011 12:15:04 PM
NO RATINGS

I think the largest issue facing the LED change over is cost. Until manufacturers can come up with a better technology to reduce the manufacturing costs, consumers are going to pay very steep prices. If prices don't fall considerably, many consumers that took on the added cost of conversion to LED's risk losing their investment if the products aren't mass produced. I do know there are a few companies that are looking at organic substances that can produce the equivalent output of LED's at a fraction of the cost. Of course this is in R&D and could take years to even take hold on the market.

Bolaji Ojo
User Rank
Blogger
Re: LED T8s still require improvement
Bolaji Ojo   4/28/2011 10:19:00 AM
NO RATINGS

Excellent. The additional industry perspective is good for understanding the dynamics of the continuing evolution of the lighting market. I'll check out Jim Brodrick's blog.

Page 1 of 2   Next >   Last >>


More Blogs from Malcolm Penn
A different semiconductor industry will emerge in a decade due to profound changes taking place in next-generation wafer production.
The electronics supply chain is under enormous stress because OEMs have taken outsourcing to a level it should never have reached
This the second part of a 2-part series on how high-tech firms can develop a better supply chain following the March Japan disaster
The chip industry has long been plagued by supply insecurities, and corrective steps need to be urgently taken following the Japan quake

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EBN Dialogue / LIVE CHAT
EBN Dialogue enables you to participate in live chats with notable leaders and luminaries. Open to the entire EBN community of electronics supply chain experts, these conversations see ideas shared, comments made, and questions asked and answered in real time. Listed below are upcoming and archived chats. Stay tuned and join in!
Archived Dialogues
Live Chat 11/12: Examining the Cyberthreat to Supply Chains
The number of cyberattacks is on the rise and hackers are targeting the supply chain. Drew Smith, founder and CEO of InfoArmor, will be on hand to discuss the reality of today's threat landscape and what to do about it.
Live Chat 11/06: Enterprise Risks, Intellectual Property & Supply Chains
Enterprise risk management (ERM) frameworks can be useful to identify, assess, and manage intellectual property (IP) risks that arise in supply chain compliance. We'll look at real-world examples and strategies for mitigating those risks.
Latest Poll
EBN Newswire
BANNOCKBURN, IL & WASHINGTON   12/11/2014
2014 DSW Rule Fails to Incentivize Recycling Sufficien...
Twitter Feed
EBN Online Twitter Feed