Re: Got on the radio. Coast to coast AM. Subject:Hydrogen

[josh <joshl@myrealbox.com>]

>Probably most EVs are getting 2-3 mi/kwh upstream of the charger
>(ie. on the AC side).  

Do you mean: as measured at the wall rather than by what's on board?  It sounds
like you might mean something else.

>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.

I had thought your numbers were about what I've heard, but some of the folks
here seem to be claiming much higher.  I test-drove a RAV4 EV the other day, and
I believe that the EPA mileage listed on the sticker worked out to very roughly
3 mi/kWh.  This is not to say that others here might not get much better, I'm
just mentioning.  I don't know how they measure.

>I've seen numbers of 33, 36, and 38 kWh in a gallon of gasoline.

It's easy to convert kWh from BTU (3412 BTU per kWh) but it's hard to nail down
what's in a gallon of gasoline or Diesel.  Neither is strictly defined, both can
vary.  For gasoline I use 106,000 BTU, but it can be lower (even lower than
100,000 I think) or higher (as high as 114,000 or maybe more I think), depending
I think in part on the season.  For Diesel, I use about 140,000 BTU though this
also is not necessarily precise.  I did some research into this once, and it was
just very hard to get a steady answer as to the energy content of a gallon of
gasoline.