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Technology Stocks : Intel Corporation (INTC)
INTC 35.53-1.1%Nov 14 9:30 AM EST

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To: nihil who wrote (100695)3/11/2000 12:32:00 PM
From: rudedog  Read Replies (1) of 186894
 
nihil - **OT** Wow!! Thanks for that info... I installed sodium floodlights in my yard as "canopy lighting" (mounted high in the trees, faces up and lights the upper leaves) to replace halogen. This reduced the power load from 4000W to 560W... the softer light from the sodium floods is much more pleasant, and with 24,000 hour bulb life as opposed to the 2000 hour Halogen life, I also won't have to worry about maintenance for years.

The installer used white cotton gloves to screw the bulbs in - he explained that a fingerprint in the bulb would absorb so much energy that it could burn through the glass, thus the gloves.

Those floods produce 6300 lumens on 70 watts for about 90 Lumens per watt, about in the middle of your range for high pressure sodium. The Halogens produced 7000 lumens on 500W, for 14 lumens per watt... I also looked at Mercury Vapor which also has long life but the blue light is kind of ugly and the light output is only 45 lumens per watt.
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