tag:blogger.com,1999:blog-1316303495378677857.post2896343046706365024..comments2023-09-03T09:52:05.654-04:00Comments on <center><a href="/#banx">Freedom Light Bulb</a></center>: All about the new Philips LED Bulb, and how it won the L-PrizeLighthousehttp://www.blogger.com/profile/08123172670211101092noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-1316303495378677857.post-51549710154446032292013-04-12T18:57:43.694-04:002013-04-12T18:57:43.694-04:00Just bought three of them at less than $27 per bul...Just bought three of them at less than $27 per bulb from Amazon. These will be added to the two I've been using for nearly a year. I'm happy with them and glad to see the price sliding down.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-67990148651764258502012-12-18T14:01:14.248-05:002012-12-18T14:01:14.248-05:00To the previous poster: Umm ... actually 1 out of...To the previous poster: Umm ... actually 1 out of 16 (6.25%, meaning 93.75% with no issue) failing is pretty much EXACTLY what you would expect to see with a product advertising 95% measured reliability.<br /><br />If you have 16 bulbs -- which speaking as a scientist, is a LOUSY sample size, but lets put that aside for a moment -- you are going to see discrete failure thresholds of 0%, 6.25%, 12.5%, and so on. You are never going to see exactly 55. SO if you point is that 6.25% > 5%, just STOP it. Your being silly.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-78274402972534557862012-04-24T17:51:05.284-04:002012-04-24T17:51:05.284-04:00Southern California Edison which was involved in f...Southern California Edison which was involved in field testing Philips L-Prize entry, decided to lab test 16 of the bulbs. It turns out 1 of the 16 exhibited a failure mode in which the light turned red by the time it had 1502 hours of run time. This early failure casts doubt on the 20,000 hour (with 95% confidence) lifetime touted by the Department of Energy. See link on web page http://www.etcc-ca.com/component/content/article/48-Commercial/3044-l-prize-lab-evaluation which has link to reportAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-29882160339055677742012-04-24T13:46:00.851-04:002012-04-24T13:46:00.851-04:00@Anonymous
Thanks - interesting, will look into t...@Anonymous <br />Thanks - interesting, will look into this in post update.<br /><br />The uniform light distribution issue, lab test document as direct link:<br /><a href="https://docs.google.com/file/d/0B25T0YFa8TKaTHVVbDVrLTVSSkNEcW5MaVNzVTI4dw/edit?pli=1#" rel="nofollow">Light Distribution Analysis</a> of Philpis LED v other LED and v incandescent bulb<br /><br />2. RE production version of the L-Prize also not meet the published L-Prize criteria uniformity standard <br /><a href="https://docs.google.com/file/d/0B25T0YFa8TKaWExFamtJcG9nSUE/edit" rel="nofollow">Plots of light distribution</a> of Philips bulbLighthousehttps://www.blogger.com/profile/08123172670211101092noreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-38898762733704148862012-04-24T12:25:43.399-04:002012-04-24T12:25:43.399-04:00To address the points above as to whether the cont...To address the points above as to whether the contest was rigged. If the L-Prize bulb clearly FAILED a technical test where there is a clear cut pass or fail outcome that any freshman engineering student can judge, but the technical review committee writes in PASS and explains, in SECRET, without publishing a rules update, that they are lowering the standard so that they can write in PASS, this is clear cut CORRUPTION.<br /><br />The technical review committee sought to justify secretly altering the uniformity standard stating “..however, independent data verifies that this distribution is actually much more uniform than a standard incandescent lamp …“ While there can be no justification for secretly lowering the standard to rigg the contest, astondingly (or not) this statement is false. Calculating the standard deviation for the L-Prize bulb tested by the DoE and a standard incandescent lamp, using data provided by the Department of Energy shows that L-Prize lamp tested by the DoE was actually less uniform. See https://docs.google.com/open?id=0B25T0YFa8TKaTHVVbDVrLTVSSkNEcW5MaVNzVTI4dw<br /><br /><br />The production version of the L-Prize (which by the way appears to be a Chinese product) also does not meet the published L-Prize criteria uniformity standard see:<br /><br />https://docs.google.com/open?id=0B25T0YFa8TKaWExFamtJcG9nSUEAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-25498151024920441092012-04-23T13:24:09.039-04:002012-04-23T13:24:09.039-04:00OK, more about the flawed testing:
See the post u...OK, more about the flawed testing:<br /><br />See the post update shortly, article <a href="http://freebeacon.com/loose-bulbs/" rel="nofollow">about the testing</a>, and see the Prize Test Review Comments on the linked Test Committee <a href="http://ceolas.net/Docs/LPRIZE_TRC_SUMMARY.jpg" rel="nofollow">document</a> itself (click on it to enlarge):<br />While the bulb obviously passes the tests, or the prize could not be awarded, it does so with a lot of provisos, such that Philips own prototype testing are accepted when discrepancies arise, and promises about "criterions will be met in production lamp" are also accepted.Lighthousehttps://www.blogger.com/profile/08123172670211101092noreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-29760332391240770362012-04-23T12:45:51.087-04:002012-04-23T12:45:51.087-04:00@Mark
Thanks for that...
As you see, he goes on ...@Mark <br />Thanks for that... <br />As you see, he goes on to say: "the justification asserted in that document based on comparing uniformity to a standard incandescent lamp is factually (quantifiably) false. The putative L-Prize winner is actually less uniform"<br /><br />From his and other contributions, the sold version also seems worse than the prize version.<br /><br />But I agree that the edited emphases gives the wrong impression, must redo that.<br />Of course it would be illogical if it could win the prize, without passing the prize testing! ;-)Lighthousehttps://www.blogger.com/profile/08123172670211101092noreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-80682074698058085882012-04-22T21:35:35.530-04:002012-04-22T21:35:35.530-04:00I don't know why you say that the bulb faiiled...I don't know why you say that the bulb faiiled to meet key technical requirements. The doc you linked to shows every requirement as "pass"<br />http://tinyurl.com/43ECMQMMarknoreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-30637847860664282632012-03-27T12:10:07.874-04:002012-03-27T12:10:07.874-04:00You make some excellent points in the article. I t...You make some excellent points in the article. I think that what people tend to forget about, is that the lifespan based on a few hours of usage a day, so even though a bulb might seem to have less hours, if it only uses a few hours a day, it can last for many years. The other nice thing about LED light bulbs, is that you don't have to replace them from vibrations, or purchase rough service light bulbs.<br /><br />I found a place that has a large variety of light bulbs, and I also found a coupon code.<br /><br />http://www.northernlightsusa.com<br /><br />Use Coupon code BULBS10Peter B. Jacksonhttp://www.northernlightsusa.comnoreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-2486973084828950982012-03-23T14:40:06.389-04:002012-03-23T14:40:06.389-04:00Thanks @plumbing
- good point about the bother of ...Thanks @plumbing<br />- good point about the bother of buying and changing bulbs, compared with longer life bulbs.<br />There are longlife incandescents too, eg <a href="http://lightbulb.aerolights.com/item/aero-tech-bulbs-made-in-the-usa-20-000-hours/-a-series-light-bulbs-made-in-the-usa-20-000-hours/100a19-fr?" rel="nofollow">20,000 hr 100W</a> albeit not 80,000 hrs.<br /><br />I would doubt the 80,000 hr LED lifespan tag, and if so it (currently) arises out of unnatural lab specifications,<br /><a href="http://ceolas.net/#li15ledax" rel="nofollow">http://ceolas.net/#li15ledax</a> also remembering that already limited brightness decreases with age.<br /><br />Usage costs are of course still lower with LEDs, but as well as purchase price and frequency of use considerations,<br />there are still more factors why overall household and society energy (and money) savings are limited, as listed on the <a href="http://freedomlightbulb.blogspot.com/p/deception-behind-banning-light-bulbs.html" rel="nofollow">Deception page</a> summary.Lighthousehttps://www.blogger.com/profile/08123172670211101092noreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-62108893483419015442012-03-23T13:33:21.784-04:002012-03-23T13:33:21.784-04:00The preliminary cost per bulb is still higher, the...The preliminary cost per bulb is still higher, the total lifetime cost of an LED light bulb is essentially decrease than that of equivalent incandescent and CFL bulbs. Taking into consideration power expenses and also time and sources required to replace incandescent and CFL bulbs, an LED bulb that lasts 80,000 hrs features a considerably decrease lifetime cost.plumbinghttp://www.bes.co.uknoreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-11999781812719423522012-03-16T18:46:35.363-04:002012-03-16T18:46:35.363-04:00Thanks Steve
yes there's more about GE (and Os...Thanks Steve<br />yes there's more about GE (and Osram) and their involvement in seeking and welcoming light bulb regulations on the website <a href="http://ceolas.net/#li12ax" rel="nofollow">http://ceolas.net/#li12ax</a> onwards<br /><br />A video demo of the Philips L-prize bulb on Light Bulb Choice blog today<br /><a href="http://lightbulbchoice.com/news/2012/03/first-look-at-philips-l-prize-winning-led-bulb" rel="nofollow">http://lightbulbchoice.com/news/2012/03/first-look-at-philips-l-prize-winning-led-bulb</a>Lighthousehttps://www.blogger.com/profile/08123172670211101092noreply@blogger.comtag:blogger.com,1999:blog-1316303495378677857.post-15995729996086603102012-03-16T09:23:35.587-04:002012-03-16T09:23:35.587-04:00GE also favored
CEO Immelt heading up Bush-Obama a...GE also favored<br />CEO Immelt heading up Bush-Obama advisory boardssteven taylornoreply@blogger.com