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DIY & Home Improvement

NYC_SKP

(68,644 posts)

8. CRI improving more and more, now >90, and LEDs more than pay for selves in life span alone.

Reply to TreasonousBastard (Reply #4)

Sat Feb 1, 2014, 04:45 PM

Feb 2014

New CREE chips:

http://online.wsj.com/article/PR-CO-20140129-910210.html

Cost comparison from 2010:

Students use a table to compare the cost of bulbs and cost of electricity to operate each bulb type for 30,000 hours.

Bulb Type Bulbs needed for 30,000 hours
Total Bulb Cost plus Electricity Used @ 15¢/kWh

Bulbs + Electricity

Incandescent
38 watts 30 $30.00 38 W x 30,000 hr
= 1,140,000 Wh 1,140 kWh $171.00 Total for lamps plus power= $201.00

CFL
9 watts 4.28 $29.66 9 W x 30,000 hr
= 270,000 Wh 270 kWh $40.50 Total for lamps plus power= $69.66

Feit LED
6.5 watts 1 $20.00 6.5 W x 30,000 hr
= 195,000 Wh 195 kWh $29.25 Total for lamps plus power= $49.45

And they're cheaper now.

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LED Lightbulbs and antique lamps [View all] Holly_Hobby Feb 2014 OP

I have a wide range of LEDs that I've collected over 8 years or longer. NYC_SKP Feb 2014 #1

Thanks, n/t Holly_Hobby Feb 2014 #5

I've spent several hundred dollars at... krispos42 Feb 2014 #2

+1 for superbrightleds.com X_Digger Feb 2014 #3

Thank you for your reply n/t Holly_Hobby Feb 2014 #6

I'd suggest you look for a CFL that fits... TreasonousBastard Feb 2014 #4

That's helpful too, thanks n/t Holly_Hobby Feb 2014 #7

CRI improving more and more, now >90, and LEDs more than pay for selves in life span alone. NYC_SKP Feb 2014 #8

The Cree chips are neat, although... TreasonousBastard Feb 2014 #9

The copy paste action lost context. 4.28 was the multiplier to reach 30,000 hours. NYC_SKP Feb 2014 #10

Latest Discussions»Culture Forums»DIY & Home Improvement»LED Lightbulbs and antiqu...»Reply #8