Kirk, U got a link for that? On Fri, 3 Jan 2003, kirk wrote:
> Those numbers are fuel comparisons not drivetrain. > To the end user curb weight and range tell it all. > > Lead Acid needs to be replaced by something more efficient. Skeleton says > their new supercap is an order of magnitude better than the current crop of > caps. A hybrid using their cap would beat lead acid. Not only > charge/discharge losses but weight as well. > Diesel or Bourke for prime mover. Maybe some day fuel cells. > > Kirk > > -----Original Message----- > From: MH [mailto:[EMAIL PROTECTED] > Sent: Friday, January 03, 2003 12:44 PM > To: biofuel@yahoogroups.com > Subject: Re: [evworld] Re: [biofuel] GM rethinks hydrogen fuel cells > > > One of the problems (I think) associated with > liquid and electric vehicles is when comparing > energy derived at a given weight, > > Lead acid battery___1x > Ethanol____________50x > E85________________80x > Gasoline_____________100x > > I'm unsure of the source of these figures and > question how it was derived but I'd assume > it may have converted the energy to Btu/lb > or J/kg for comparative purposes only BUT > technical studies indicate that ethanol and E85 > Internal Combustion Engines can be dedicated > to provide equal (or slightly better) fuel economy > per given volume (e.g. one litre) as unleaded > gasoline. > > > Another comparison would be cost per given > unit of energy such as a comparable price > for electricity to petrol, for example -- > > One US gallon of Low-Heating-Value petrol (gasoline) = 115,000 BTUs > divide by 3412 BTUs/kW = 33.7 kW > times $0.07/kW = $2.359 US dollars for the equivalent residential > electrical > amount of energy per US gallon of unleaded gasoline. Costs per kW may > very. > > Using the BTU figure from -- > Energy Conversion Facts > http://bioenergy.ornl.gov/papers/misc/energy_conv.html > > Energy Conversion Calculator > http://www.ex.ac.uk/cimt/dictunit/ccenrgy.htm > > I imagine comparative factors could be used > using (Compressed) Natural Gas, LPG, hydrogen, > coal, biofuels, wind, hydroelectric, PV, etc. > > > ` > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuels list archives: > http://archive.nnytech.net/ > > Please do NOT send Unsubscribe messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > --- > Incoming mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.435 / Virus Database: 244 - Release Date: 12/30/2002 > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuels list archives: > http://archive.nnytech.net/ > > Please do NOT send Unsubscribe messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
