LEDs Energy Efficiency Lighting - Breakthrough On World's Most Efficient LED Lighting

My letter follows ...
source: private email to Seattle Lighting, the distributor for LLF

Hi Ed,

I was in your store yesterday looking for the  new LLF lighting fixture reported in this news story.  How much is it and when can i get it?  Could you keep me appraised of when it will be available?

--
Seth Russell
http://fastblogit.com/seth

... I definitely do need to replace some lighting fixtures here that keep malfunctioning.

Tags

  1. lighting
  2. light bulb
  3. gw action
  4. gw conservation
  5. wwjd
  6. led
  7. gw project

Comments


Seth says
M 2007-11-30 10:24:54 8677
LED Christmas lights seem to be sold out in my neighborhood.

Well LED Christmas lights are probably a good idea

... a better idea might be not to participate at all in that annual show of ostentation, conspicuous consumption, and wasted energy which has absolutely nothing to do with Christianity, imho.  You might ask WWJD!

i wonder if you could power Christmas lights with the sun or wind?

Mark de LA says
source: ... ... a better idea might be not to participate at all in that annual show of ostentation, conspicuous consumption, and wasted energy which has absolutely nothing to do with Christianity, imho. 
... Some people like to celebrate in different ways & have anchors to happy moments in childhood surrounding the Christmas season - punctuated with Christmas lights & Christmas trees etc. I don't particularly like the public commercial holiday, nor much of the holiday season since nothing seems to get done.  OTOH, the festive mood is nice.  I mentioned the LED lights because they were available for the last couple of years.


Seth says
source: allelectronics.com

ULTRA-BRIGHT WHITE LED, 5MM

Ultra bright white 5mm diameter LED. Brighter than most small incandescent lamps, more efficient, and now less expensive, it's time to start using white LEDs for all of the lighting projects that used to be the exclusive domain of incandescent lamps. We've got a great deal on these water-clear LEDs. Slightly less bright than our standard ultra-bright white led (CAT# LED-75), but still quite bright. They operate on 3.0-3.5Vdc, 20mA. 15-25 degree viewing angle.


Your Price: $0.65 each

Special Quantity Discounts!
100 to 499 $ 0.50 each
500 to 999 $ 0.45 each
1000 or more $ 0.35 each

In stock, ships within 24-48 hours.
... By my calculations this consumes .07 watts (3.5 volts * .020 amps).  One wonders how many of them one  needs to get as much as a 100 watt bulb? 

Mark de LA says
that's 1428 led's at $0.65 per bulb or $928 per 100 watts worth.  Otherwise you need the lumens put out by each to get a clue!


Seth says
Excellant youtube comparison of light bulbs ...



But an important calculation was not done in the video ... lumens/watt ...

Incandecent - . 13.52 lum/watt
led (in video)  - 16.0 lum/watt
fluorescent  -     57.39 lum/watt
LLFs LRP/38 - 113.6 lum/watt

This comparison justifies LLF's claim of a breakthrough.







Seth says
This led light bulb can be used with any voltage from 110vac to 240vac. It is 4 inches in diameter and 7 inches long. It uses 18 high power SMD leds to produce a bright evenly distributed light. It is available in daylight white and warm white. This globe is ideal for open overhead fixtures and floor lamps. Perfect for lighting your porch or around your deck. Uses 80% less electricity than a comparable incandescent bulb (50 watt). The bulb has an expected life of 30,000+ hours.

Daylight White: 5500K , 540Lumens
110-240 Volts - 9.5 Watts


Now let's compare 100W comparable bulbs ...

 light bulb
100 watt incondesent
Compact Floursenct
2 LED bulbs (above)
 
 power 100 watts
27 watts
19 watts
 
lumens/watt
16.9 lum/watt
48.15 lum/watt
47.37 lum/watt *

lifetime
750 hours
10,000 hours
30,000 hours

cost/bulb
$ .50
$16.00
$67.95 X 2 = $135.90

brightness
1690 lumens
1300 lumens
1080 lumens

cost/1000 hour
investment
$ .667
$ 1.60
$ 4.20





Mark de LA says
You might check on your lifetime hours figure. On my Christmas lights they are only 20,000.  A change in that figure would skew things quite a bit. Are yours made in China ? QA for Chinese products is in the toilet these days.  You might define a unit called a lumen-hour to rate your bulbs & maybe define a cost/lumen-hour.   FYI, it would take 3.42 years to test a 30,000 lifetime bulb. It's not likely anyone did that test.

Seth says
M 2007-12-03 11:38:13 8677
 You might define a unit called a lumen-hour to rate your bulbs & maybe define a cost/lumen-hour.  
Lumen-hours might be a good idea.  Another important measure that can be calculate is how long it takes you to pay for the bulb out of savings from your electric bill. 

Seth says
M 2007-12-03 12:26:37 8677
For EXTRA CREDIT consider the effects if you simply change from 100 watt light bulbs to 60 or 40 watt light bulbs. I changed a lot of my lights from 100s to 60s & noticed that even for some fixtures a 40 will do.
Yep

Seth says
Lots of LED bulb purchase oppurtunities here.  My current project is to replace the track lighting around my desk.  Right now it uses 6 flood lights ... very hot... so hot that don't like to turn it on even though i got a dimmer on it.  I may want to replace these by 12 Volt LED's running into a rechargeable battery ... perhaps even find a way to feed the battery from some alternative energy source.

Seth says
source: private email

Dear Mr Russell,

Thank you for your e-mail and your interest in our product.

At this moment the Pharox LED lamp is only available for clients of Oxxio green energy in The Netherlands (see www.oxxio.nl/lamp).

However, we are working very hard to have the lamp also available for non-Oxxio clients and to distribute outside The Netherlands.

We apologize we cannot offer you the lamp already, but we would be more than happy to keep you informed through our website (www.lemnislighting.com ).

Kind regards,

2007-12-13 LOGO

T:  +31 73 615 6370
F:  +31 73 615 6361

... Actually there is a buy button for the Pharox light bulb here, but $59 is a bit steep for 230 lumens.


I would prefer stinging a bunch of these $4 bulbs together on a 12 volt home bus .

Mark de LA says
Obama touts new lightbulb standards.  Hopefully he doesn't tout the poisonous mercury fluorescent lights as a national standard. What's next tire gage random checks on the highway?

Seth says
MR 2009-06-30 12:00:38 8677
Obama touts new lightbulb standards.  Hopefully he doesn't tout the poisonous mercury fluorescent lights as a national standard. What's next tire gage random checks on the highway?
Random checks on the highway for tire pressure is a great idea, but it might be more practical to build that right into the automobiles so that a warning light pops up on the dash when your tires are low.  I would use it.  Monitoring the efficiency of our home lighting is also a good idea.

C says
Headline:
As Government Bans Regular Light Bulbs, LED Replacements Will Cost $50 Each

Read more: http://www.foxnews.com/scitech/2011/05/17/government-bans-regular-light-bulbs-led-replacements-cost-50/#ixzz1McglO49r
...
The article has lots of info on the problem of getting enough light out of LED's with energy efficiency & cost in mind. Necessary probably is reinventing the lamp & lighting. Government seems to be forcing evolution by laws & dictates again. 

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