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Re: Do X10 Dimmers save electricity?
- Subject: Re: Do X10 Dimmers save electricity?
- From: "David Buckley" <db@xxxxxxxxxxx>
- Date: Thu, 17 Feb 2005 06:19:17 -0000
Found on usenet:
For a standard tungsten filament lamp, the effect of varying the
supply voltage from the rated value (100%) is thus:
Voltage Light output Lamp life Power consumption Efficiency
110% 140% 32% 115% 120%
100% 100% 100% 100% 100%
95% 80% 200% 96% 83%
90% 65% 400% 88% 74%
80% 45% >2000% 72% 63%
50% 8% almost forever 35% 22%
The power savings from dimming lighting are enormous, if you burn
enough hours. This is why any modern building has controlled
lighting, so as to save money whilst providing the design illumination
level.
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