Well, I went to check in my afternoon avoidance of work ... um ... er ... break and I find that Jim Broderick of DOE is their Person of the Year. I then read the comment below the post on that, and I'm not clear if he gets the title because of doing good or bad.
I have big qualms because (as has been blogged roughly 846357 times), you can do better than the best LED luminaire efficacy today with the most generic lensed troffer (and let's not pretend that LED luminaires are in general giving us all kinds of great shielding or anything close to aesthetics) 2GT8 2 32 MVOLT GEB10IS ... becasue what nobody seems to want to factor in is that you have a 0.63 LLF for the LED and a 0.77 for a T8. Crummy F32T8/7800 is 2800 lumens. 80% fixture efficiency. 0.88 BF. All that comes out to 3548 lumens at 59W or 60 lumens per Watt ... right where the LED people get all excited that they have achieved a miraculous new benchmark in greatness.
And oh yeah, that 60 lpW costs you not more than $100. How much was that LED thingy again?
Again, blogged on it before, won't be the last time, if you spend roughly $10 on that $100 troffer, you cna get a High Performnace T8 system with a QHE ballast ISL-SC (0.78BF, 42W) and operate a FO28/835/XP/SS/ECO (2725 lumens) lamp and get 3231 lumens at 42W or 77 lpW.
Anyone know where i can get 77 lpW out of a LED luminaire that gets me nominally 3000 lumens ... for $110? Sorry, I can't hear you over those chirping crickets. Now, if you'd like to pay $200 for that "fancy new efficacious beauty", we can work a deal.

Why does the guy pushing expensive and non-efficacious technology get anything but a poke in the ribs? Kinda sad. If the DOE truly cared about energy savings, they would be pouring Super Big Gulps of HPT8 Kool-Aid.
No comments:
Post a Comment