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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> | ||
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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> | ||
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<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> | ||
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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> | ||
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<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> | ||
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</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> | ||
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<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> | ||
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Proudly powered by <a href="http://getpelican.com/">Pelican</a>, which takes great advantage of <a href="http://python.org">Python</a>. | ||
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<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> | ||
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