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Metal Halide troffers

Metal Halide troffers

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At a thrift store in New Hope. Store had a random arrangement of metal halide and standard 4 foot fluorescent troffers. Most of the metal halide ones were nonfunctional or very dim.

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Filename:IMG_0612.JPG
Album name:mdcastle / Misc
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Keywords:Lanterns
File Size:250 KB
Date added:Feb 07, 2017
Dimensions:2465 x 1848 pixels
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URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-130452
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Lumex120
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UCM30tBQDUECOV6VeG5W87Vg
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Feb 07, 2017 at 09:45 PM Author: Lumex120
The local post office used to have these in HPS form with flat lenses. Unfortunately, as usual, they were replaced with LED troffers.

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streetlight98
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Mike McCann


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Feb 08, 2017 at 06:23 AM Author: streetlight98
Very cool! Are the MHs all arranged in pairs like this? I wonder if they're spot replacing the MHs with fluorescent troffers when both MHs fail? (unless there were a bunch of pairs without either lamp working). MH-lit stores are so cool.

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sol
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Feb 08, 2017 at 06:30 AM Author: sol

MH-lit stores are so cool.


It's gotten to the point that any public indoor space lit with MH is cool, which is unfortunate as we lament the demise of the arc lighting.
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Feb 08, 2017 at 01:19 PM Author: Ash
MH lit spaces were cool since ever. They have not become cooler now, only rarer
wattMaster
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Feb 08, 2017 at 02:38 PM Author: wattMaster
I would be concerned about the heat, as MH bulbs generally generate lots of it.

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Ash
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Feb 08, 2017 at 03:40 PM Author: Ash
Concerned in what sense ?

For the localised heat at the luminaire : No problem, the luminaire is made to handle that

For the heat added to the room : The MH is about as efficient as everything else of its age (Quartz MH vs older Fluroescents, CMH vs newer Fluorescents and LEDs), so for the same light provided into the room, the amount of heat is not much different (if you compare high power MH to Fluorescents or lower power LEDs, the MH luminaire heats more simply because of the power but it takes less luminaires to light the room)

But widely spaced luminaires give good results only when they are installed high, and in some modern spaces this is not possible (drop ceilings installed low for various reasons prevent it etc)
xmaslightguy
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zzz


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Feb 08, 2017 at 09:15 PM Author: xmaslightguy
I was in a store once that had MV troffers
(can't really remember now, but I think it also had strips of fluorescents mounted on the ceiling (an arrangement I always thought looks stupid, troffers look way better for grid/tiled ceilings))

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