)In my post about updating my headlamps to LED (http://gm-volt.com/forum/showthread...t-Conversion-Kit-Review&p=3707193#post3707193) I ended up with a few (facious but real) calculations of range increase and cost benefits. I have changed all my cabin lights to LEDs as well as my headlights.
I Quote:
Just for kicks I ran some calculations on the performance gains and the savings resulting from the reduced current flow using LEDs. I used some assumptions such as the headlights would be on for 10% of my driving, and that the dome lights would be on for about 5 minutes for a typical 38 mile charge cycle. I also used a very low kWh rate of .03 per, as that is about what my electric company, APS pays me for the excess power from my rooftop solar at the end of each year. If I were paying normal electrical costs, the payback would be about 5 times faster.
The results:
For the increase in range on a nominal 38 mile charge, the dome light change would add 19 feet to the range. The headlights would add about 119 feet! Woo Hoo!!
As far as return on investment, the combination of all the LEDs would reach break even at about 19 million miles! (Really!) Of course without my solar and the resulting higher electric rates, it would be ONLY about 4 million miles!
End Quote
If you ran your headlights full time, the range increase would be about 1190 feet, or about .21 miles out of 38 miles, or about 0.5%.
Dick
I Quote:
Just for kicks I ran some calculations on the performance gains and the savings resulting from the reduced current flow using LEDs. I used some assumptions such as the headlights would be on for 10% of my driving, and that the dome lights would be on for about 5 minutes for a typical 38 mile charge cycle. I also used a very low kWh rate of .03 per, as that is about what my electric company, APS pays me for the excess power from my rooftop solar at the end of each year. If I were paying normal electrical costs, the payback would be about 5 times faster.
The results:
For the increase in range on a nominal 38 mile charge, the dome light change would add 19 feet to the range. The headlights would add about 119 feet! Woo Hoo!!
As far as return on investment, the combination of all the LEDs would reach break even at about 19 million miles! (Really!) Of course without my solar and the resulting higher electric rates, it would be ONLY about 4 million miles!
End Quote
If you ran your headlights full time, the range increase would be about 1190 feet, or about .21 miles out of 38 miles, or about 0.5%.
Dick
