Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post

Christ · 02-04-2010, 02:50 PM

Well, it really is comical. No almost about it.

From what I gather, it's not really HHO, though. They're storing H2 in a fuel cell to make electricity to drive an electric motor, replacing batteries as the fuel source.

This begs the question though - Which one is really more efficient?

Lets say for a second that you have a 15kW/h H2 cell, and 15kW/h of NiMH batteries, both discharged to the same power level - which one would take more energy to charge back to full energy capacity?

02-04-2010, 02:50 PM	#2 (permalink)
Christ Moderate your Moderation. Join Date: Nov 2008 Location: Troy, Pa. Posts: 8,919 Pasta - '96 Volkswagen Passat TDi 90 day: 45.22 mpg (US) Thanks: 1,369 Thanked 430 Times in 353 Posts	Well, it really is comical. No almost about it. From what I gather, it's not really HHO, though. They're storing H2 in a fuel cell to make electricity to drive an electric motor, replacing batteries as the fuel source. This begs the question though - Which one is really more efficient? Lets say for a second that you have a 15kW/h H2 cell, and 15kW/h of NiMH batteries, both discharged to the same power level - which one would take more energy to charge back to full energy capacity? __________________ "¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"