What I think is being discussed is a internal combustion engine wastes fuel
due to incomplete combustion,
deciding hills, slowing down, idling. Regeneration would provide some
energy.
Could you provide some examples as I would like to understand more.
Links to further information is kindly welcomed, thank you
-----Original Message-----
From: MH [mailto:[EMAIL PROTECTED]
Sent: Sunday, January 20, 2002 10:28 PM
To: biofuel@yahoogroups.com
Subject: Re: [biofuel] Hydrogen Fuel vs Dino Diesel
> A fuel cell should produce more energy.
Agreed. But having read a fuel cell is up to 80% efficient ÷
80 percent - efficiency of the electric motor/inverter
× 30 to 40 percent - efficiency converting methanol to electricity
× 80 percent - efficiency converting electricity to mechanical power
> Correct me if I am wrong
> but I am under the impression a diesel efficiency is measured
> as the fraction of the theoretical Carnot of an thermal oxidation
reaction.
> Emphasis on thermal.
Understood.
> Although a fuel cell oxidizes what is measured instead is the
electrochemical energy
> of combination, ie. an electron a a certain potential. It is an ordered
> process and has nothing to do with thermal Carnot calculations.
> Thus a gallon of fuel may take you 200 miles, something a thermal process
cannot.
What I think is being discussed is a internal combustion engine wastes fuel
due to incomplete combustion,
deciding hills, slowing down, idling. Regeneration would provide some
energy.
Could you provide some examples as I would like to understand more.
Links to further information is kindly welcomed, thank you.
> Present electrical cars leave a great deal to be desired.
> To just replace an engine with an electrical motor is enormously wasteful.
> An electrical motor doesn't need a clutch to get rolling as it is quite
> happy to smoothly develop force/time from zero RPM.
> The only objection I can see to a motor in each wheel is the unsprung
weight.
> Every other criteria seems to want to put it there.
> Gearbox mass and gear loss would be avoided as well as the cost of
manufacture.
> Kirk
Plus less moving parts. It would seem to potentially increase ones fuel
economy.
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