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sensable outdoor solar lighting options? | 14 comments (14 topical, 0 editorial)
Re: sensable outdoor solar lighting options? (3.00 / 0) (#1)
by wooferhound (tim((NoSpamAt))wooferhound.com) on Mon Sep 8th, 2008 at 06:58:16 PM MST
(User Info) http://wooferhound.com

LEDs are less efficient than a Compact Fluorescent bulb.
Home Depot has a Solar Motion Detector Fluorescent outdoor light too

W o o f -={(



Re: sensable outdoor solar lighting options? (3.00 / 0) (#2)
by DamonHD (d@hd.org) on Tue Sep 9th, 2008 at 12:02:17 AM MST
(User Info) http://www.earth.org.uk/

W, I don't think that's true for the newest LEDs, especially cool white.  I have a nice 9W (warm white) on my desk that does nearly 60lm/W, as good as the CFL it replaces.

Rgds

Damon

[ Parent ]



Re: sensable outdoor solar lighting options? (3.00 / 0) (#5)
by Ungrounded Lightning Rod on Tue Sep 9th, 2008 at 01:20:38 PM MST
(User Info)

We were due for the "crossover" about now.  It's nice to see the first LED assemblies coming out that are on a par with CFLs.  Expect more of them, then some that beat CFLs first by a bit, then by a bunch, in the next couple years, followed by a price drop.

I'm particularly glad to see them making it to market now, while the eco-wackos are working on legislation to mandate fixtures that can ONLY hold the mercury-laden fluorescent devices in all new home construction and renovation.  (The recent hype about the miniscule bits of toxic materials in the LEDs tells me the fluorescent manufacturers are also expecting LEDs to become a threat in the near future.)

[ Parent ]



Re: sensable outdoor solar lighting options? (3.00 / 0) (#6)
by ghurd on Tue Sep 9th, 2008 at 02:18:28 PM MST
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Be nice if the DC CFLs follow the price drop.
A $3 120VAC CFL sure beats a $18 12VDC CFL on quality, at this time.
Be nice if a $3 12VDC CFL would match quality with the current $1 120VAC CFLs.
Then the LEDs could follow the same $/W/Lumen path?  LOL
G-

[ Parent ]


Re: sensable outdoor solar lighting options? (3.00 / 0) (#7)
by Ungrounded Lightning Rod on Tue Sep 9th, 2008 at 03:15:43 PM MST
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Economy of scale.  120V CFLs sell to the consumer house lighting market.  12V sells to the (much smaller) off-grid, RV, and yachting markets.  (Seagoing stuff is pricey because it has to stand a moist and salty environment and meet tougher standards.  Also because much of its target market has (or is perceived to have) deep pockets.)

Saw some interesting stuff at a chandlery last couple weekends:
 - 12V CFL fixtures with the tiny straw-sized tubes, like those used in LCD displays:  Straight, snaked, or embedded in transparent mini-fluorescent tubes of standard form factor.
 - LED arrays and fixtures for area lighting, spot lighting (some with white/red selectability for keeping night adaptation while at the navigation station), as navigation signaling and marker lights, etc.
(Appropriate, since chandleries started out as suppliers of marine lighting consumables - candles and lamp oil - before they evolved into convenience/general stores for sailboats and small powerboats.)

I've seen LED marker lights for trucks and trailers for some time now.  I bet a good truck stop, RV store, or auto-customization supply will have similar 12V living-space lighting fixtures by now.

[ Parent ]



Re: sensable outdoor solar lighting options? (3.00 / 0) (#8)
by wooferhound (tim((NoSpamAt))wooferhound.com) on Tue Sep 9th, 2008 at 04:17:31 PM MST
(User Info) http://wooferhound.com

I saw 12 volt 8 watt lights at Walmart for $7
They run on batteries or a 12 volt supply through a socket on the fixture
The same lights sell for $11 at Home Depot or Lowes

W o o f -={(

[ Parent ]


Re: sensable outdoor solar lighting options? (3.00 / 0) (#10)
by scottsAI (user name at eml dot cc) on Wed Sep 10th, 2008 at 01:10:01 AM MST
(User Info)

Ghurd,

Small inverters work great with CFL.
Tested out a 100w inverter powering an 18 watt CFL(verified on Killowatt meter) took just under 20w.
Very happy with performance.

Most of the 12v CFL are small wattage, I wanted 18 or 23 watt, not to be found.
The 100w inverter cost $10 on eBay including shipping. Over all cheaper than 12v CFL.
Nice feature can power couple more CFL with same inverter, love options!
What do you think?

Have fun,
Scott.

[ Parent ]



Re: sensable outdoor solar lighting options? (3.00 / 0) (#11)
by ghurd on Wed Sep 10th, 2008 at 05:54:12 AM MST
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My luck with the little "no wires" 50~100W inverters has been horrible.

I used to say CFLs and inverters don't get along with each other.
I recently changed my mind, at least a little.  Some at the shop are going fine after a year or 2 now with 0 problems with the inverters or the CFLs.  Not used much. Name brand inverters and CFLs.
Could be inverters and CFLs are getting better, or just a long string of bad luck before.

There are 12V 25W class CFLs.  Quality of the ones I saw was poor for the price.
G-

[ Parent ]



Re: sensable outdoor solar lighting options? (3.00 / 0) (#12)
by scottsAI (user name at eml dot cc) on Wed Sep 10th, 2008 at 11:12:39 AM MST
(User Info)

Tested several inverters: 70, 100, 350, 1000w trip lite.
Found a pock inverter 100w by Xantrex, running two 18 w CFL gets warm after an hour. Runs my laptop just fine also.

Bought two 70w inverters for $13, driving one 18 w CFL shutdown too hot after 45 minutes. Worked after cooled down. Power draw was the same, opened it up, limited Heat sink area, to use would repackage adding heat sink area.

Interesting my Vector 350w used exactly the same power as the 100w, surprising. Expected the 100w to be less. 350W has fan, can drive many CFL at once.

1000w stand by current was 6x higher... forget the numbers.

Have fun,
Scott.


[ Parent ]



sensable outdoor solar lighting options? | 14 comments (14 topical, 0 editorial)

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