----- Original Message ----- From: josh <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, August 30, 2002 2:55 AM Subject: Re: Got on the radio. Coast to coast AM. Subject:Hydrogen
> On Fri, 30 Aug 2002 02:16:52 -0700, you wrote: > > >Well I found out that it takes 45KW to make one gallon of Hydrogen. I > >challenged the guest to compare electric to internal combustion hydrogen. I > >think he is a paid lobby for the car companies. So it would take 45Kw to > >run an internal combustion hydrogen car 25 to 35 miles. Wouldn't 45kw take > >the average conversion about 100 miles. If you were using a fuel cell would > >a gallon of hydrogen make 45kw to run your electric car? Can't seem to find > >anything in the archieves about how far a kw takes you. Lawrence Rhodes.... > > Do you mean kw, or kWh? > > Depending on which EV you are driving, I suppose a kWh might get you 2 or 3 > miles (your mileage could vary). Amount carried on board may differ from the > amount it took to get it there. Probably most EVs are getting 2-3 mi/kwh upstream of the charger (ie. on the AC side). My Rabbit bounces around anywhere from 1.5mi/kwh to 3.5mi/kwh, depending on how short my trip is (and how large a percentage of the trip is my big hill), how balanced the pack is, etc. I've measured this with an AC kwh-meter. > > 45 kWh might get you 90 to 135 miles, assuming the fallible numbers I assumed. > A gallon of gasoline might be about 106,000 BTU which is 106000/3412 kwh or > about 31 kWh. If we assume that the hydrogen is in place of the batteries, we can remove the inefficiency of the batteries. People on the list seem to be citing numbers like 100-300 Wh/mi from their E-meters, so flip that and we get 3-10 mi/kwh. I suspect 100 Wh/mi is a little low. So I would guess that if we have an honest 45kWh to run through the controller, we would see more like 150-200 miles. I've seen numbers of 33, 36, and 38 kWh in a gallon of gasoline.
