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drafts/project-green-house-2-led-replacement-lighting-part-2.html
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| <!DOCTYPE html> | ||
| <html lang="en"> | ||
| <head> | ||
| <meta charset="utf-8" /> | ||
| <title>Project ‘Green’ House #2: LED replacement lighting (part 2)</title> | ||
| <link rel="stylesheet" href="http://davidjb.com/theme/css/main.css" /> | ||
| <link href="http://davidjb.com/feeds/all.atom.xml" type="application/atom+xml" rel="alternate" title="DavidJB.com Atom Feed" /> | ||
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| <!--[if IE]> | ||
| <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> | ||
| <![endif]--> | ||
| </head> | ||
|
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||
| <body id="index" class="home"> | ||
| <header id="banner" class="body"> | ||
| <h1><a href="http://davidjb.com/">DavidJB.com <strong>Ramblings about Plone, Pyramid, Python, the web, Linux, and more, by David Beitey.</strong></a></h1> | ||
| <nav><ul> | ||
| <li><a href="http://davidjb.com/about.html">About me</a></li> | ||
| <li><a href="http://davidjb.com/blog/index.html">Blog</a></li> | ||
| <li><a href="http://davidjb.com/projects.html">Projects</a></li> | ||
| </ul></nav> | ||
| </header><!-- /#banner --> | ||
| <section id="content" class="body"> | ||
| <article> | ||
| <header> | ||
| <h1 class="entry-title"> | ||
| <a href="http://davidjb.com/drafts/project-green-house-2-led-replacement-lighting-part-2.html" rel="bookmark" | ||
| title="Permalink to Project ‘Green’ House #2: LED replacement lighting (part 2)">Project ‘Green’ House #2: <span class="caps">LED</span> replacement lighting (part 2)</a></h1> | ||
| <a href="http://twitter.com/share" class="twitter-share-button" data-count="horizontal" data-via="davidjb_">Tweet</a><script type="text/javascript" src="//platform.twitter.com/widgets.js"></script> | ||
| </header> | ||
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| <div class="entry-content"> | ||
| <footer class="post-info"> | ||
| <abbr class="published" title="2014-07-25T00:00:00"> | ||
| Published: Fri 25 July 2014 | ||
| </abbr> | ||
|
|
||
| <address class="vcard author"> | ||
| By <a class="url fn" href="http://davidjb.com/author/davidjb.html">davidjb</a> | ||
| </address> | ||
| <p>In <a href="http://davidjb.com/category/environmental.html">Environmental</a>. </p> | ||
| <p>tags: <a href="http://davidjb.com/tag/green-house.html">Green House</a> <a href="http://davidjb.com/tag/green.html">Green</a> <a href="http://davidjb.com/tag/energy.html">Energy</a> <a href="http://davidjb.com/tag/environment.html">Environment</a> </p> | ||
| </footer><!-- /.post-info --> <div class="section" id="power-comparison"> | ||
| <h2>Power comparison</h2> | ||
| <table border="1" class="docutils"> | ||
| <colgroup> | ||
| <col width="7%" /> | ||
| <col width="20%" /> | ||
| <col width="25%" /> | ||
| <col width="12%" /> | ||
| <col width="20%" /> | ||
| <col width="15%" /> | ||
| </colgroup> | ||
| <thead valign="bottom"> | ||
| <tr><th class="head">Type</th> | ||
| <th class="head">Power rating</th> | ||
| <th class="head">Brand</th> | ||
| <th class="head">Watts</th> | ||
| <th class="head">Power Factor</th> | ||
| <th class="head">Amps</th> | ||
| </tr> | ||
| </thead> | ||
| <tbody valign="top"> | ||
| <tr><td><span class="caps">CFL</span></td> | ||
| <td>14w T5</td> | ||
| <td>Beacon Lighting</td> | ||
| <td>9.10</td> | ||
| <td>0.53</td> | ||
| <td>0.06-0.08</td> | ||
| </tr> | ||
| <tr><td><span class="caps">LED</span></td> | ||
| <td>16w</td> | ||
| <td>Generic</td> | ||
| <td>4.78</td> | ||
| <td>0.32</td> | ||
| <td>0.06</td> | ||
| </tr> | ||
| </tbody> | ||
| </table> | ||
| <p>The figures above aren’t entirely accurate as the power meter I’m using is | ||
| only montoring amps to 2 decimal places, and watts to whole numbers. From | ||
| some of the calculations I’ve done, these figures aren’t even rounded, they’re | ||
| just truncated.</p> | ||
| <p>The comparison between the two lights isn’t exactly fair or exact. The <span class="caps">LED</span> | ||
| straight replacement is a lot brighter than the fluorescent tube, but the | ||
| fitting I’m putting the LEDs into is really designed for the 360 degree nature | ||
| of a fluorescent tube. The LEDs are only 180 degree light emission.</p> | ||
| <p>The colour of the LEDs in this instance is really terrible — the colour is | ||
| essentially purple/pink. In order to counter this, I’ve opted for colouring | ||
| in the lights with a yellow marker, in order to filter out some of the red and | ||
| most of the blue in the light, and roughly restore the light to a ‘natural | ||
| white’ like it was supposed to be the in the first place.</p> | ||
| <p>This serves as a lesson to try and buy from a reputable seller online or try | ||
| and buy one before committing. <span class="caps">LED</span> colouring can be really messy, especially | ||
| when dealing with manufacturers in other countries directly.</p> | ||
| </div> | ||
|
|
||
| </div><!-- /.entry-content --> | ||
|
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||
| </article> | ||
| </section> | ||
| <section id="extras" class="body"> | ||
| <div class="blogroll"> | ||
| <h2>blogroll</h2> | ||
| <ul> | ||
| <li><a href="http://planet.plone.org">Planet Plone</a></li> | ||
| <li><a href="http://jcu.me">jcu.me Research Porfolio</a></li> | ||
| <li><a href="http://xckd.com">XKCD</a></li> | ||
| </ul> | ||
| </div><!-- /.blogroll --> | ||
| <div class="social"> | ||
| <h2>social</h2> | ||
| <ul> | ||
| <li><a href="http://davidjb.com/feeds/all.atom.xml" type="application/atom+xml" rel="alternate">atom feed</a></li> | ||
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| <li><a href="http://git.io/djb">GitHub</a></li> | ||
| <li><a href="http://twitter.com/davidjb_">Twitter</a></li> | ||
| <li><a href="http://linkedin.com/in/davidbeitey">LinkedIn</a></li> | ||
| <li><a href="http://facebook.com/david.beitey">Facebook</a></li> | ||
| <li><a href="https://plus.google.com/u/0/106527454335411502430">Google+</a></li> | ||
| </ul> | ||
| </div><!-- /.social --> | ||
| </section><!-- /#extras --> | ||
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||
| <footer id="contentinfo" class="body"> | ||
| <address id="about" class="vcard body"> | ||
| Proudly powered by <a href="http://getpelican.com/">Pelican</a>, which takes great advantage of <a href="http://python.org">Python</a>. | ||
| </address><!-- /#about --> | ||
|
|
||
| <p>The theme is by <a href="http://coding.smashingmagazine.com/2009/08/04/designing-a-html-5-layout-from-scratch/">Smashing Magazine</a>, thanks!</p> | ||
| </footer><!-- /#contentinfo --> | ||
|
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| <script type="text/javascript"> | ||
| var _gaq = _gaq || []; | ||
| _gaq.push(['_setAccount', 'UA-24253455-1']); | ||
| _gaq.push(['_trackPageview']); | ||
| (function() { | ||
| var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; | ||
| ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; | ||
| var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); | ||
| })(); | ||
| </script> | ||
| <script type="text/javascript"> | ||
| var disqus_shortname = 'davidjb'; | ||
| (function () { | ||
| var s = document.createElement('script'); s.async = true; | ||
| s.type = 'text/javascript'; | ||
| s.src = '//' + disqus_shortname + '.disqus.com/count.js'; | ||
| (document.getElementsByTagName('HEAD')[0] || document.getElementsByTagName('BODY')[0]).appendChild(s); | ||
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