Toyota: Prius fuel cost 'savings'

Dan Gates wrote: 

Hmmm. Perhaps "absolute moisture" would be a more broadly
recognized term that the uninitiated would accurately relate to than
"relative humidity" with it's special technical definition? Skin is
very sensitive to air born water levels and temperature within the
"comfort range." With FRESH selected, the "absolute moisture" could
not be lowered as much as using RECIRC .... correct? Genereally
correct? ;-) Or does "absolute moisture" have a special definition
too? LOL
 

Yes. When you compress more air into a fixed volume tank, the air's
ability to suspend water decreases. Yup, I know about that one! I
know one of the websites I discovered had High/Normal/Low
psychometric charts with elevation compensations. Will relocate and
study this a bit more. Thank you!
 
--

~~Philip

"Never let school interfere
with your education - Mark Twain"

Philip® wrote: 

Actually, most people "relate" to relative humidity, in a sensory
manner. On a cold, damp day, you "feel" colder, you "feel" damp but if
you take that same air and add heat from the sun, without a change of
air due to a front moving through, it "feels" much dryer, even with the
same total moisture in the air.

By the same token, if you take a hot day with, say, 50% RH and it gets
colder, it starts to "feel" damp, and the RH goes up to 100% and it gets
foggy or rains or both.


That is why relative humidity is used as a measurement in weather
reports -- it is what people feel.

Absolute moisture would not change under either case unless the air went
through the A/C system and moisture condensed on the coil and dripped
out (puddle of water under the car).

On FRESH, there is just more moisture in the warm air than there is in
the cool air of the car, therefore, more dripping.

On RECIRC the air in the car has already been dehumidified, relative to
the exterior air. Only the moisture that is added by respiration and
perspiration are available to be removed, which is much, much less total
moisture than is in the outside air. When you breath out in cold
conditions, sure you can see your breath, (which is moisture condensing)
but that is very localized, not much moisture at all when compared to
the volume of air in the car.


Dan

On Thu, 11 Sep 2003 11:37:37 -0400, Dan Gates
<com> wrote:
 

Well one hopes you asked him first.

--

FJ40©

"Never again a Ford".....

Beware a govt that fears its populace (gun control)...

"I would bet that most top-posters do indeed not signal their lane-changes." - dizz

"Thank you for contacting the Center for Auto Safety (CAS) about your Ford Aerostar or Windstar.
CAS has received many complaints from consumers concerning peeling paint, ignition switch fires,
stalling and brake, transmission and head gasket failures. Ford should drop "star" from Aerostar
and Windstar because neither is a star when it comes to quality."

FJ40 ® wrote: 

I accidently did a reply to sender instead of reply to group. No
problem. A good practice is to never send an email to person on a
newsgroup that you would not want the entire group to read.
--

~~Philip

"Never let school interfere
with your education - Mark Twain"

In article <2Ie6b.1093$news.pas.earthlink.net>,
Philip® <net> wrote: 

The first (US) generation Prius was mostly comparable to an Echo or
Corolla in interior size, but cost so much more that the break-even
for fuel economy was in the hundreds of thousands of miles. But the
2004 model is nearly the size of a Camry inside, has the added utility
of a hatchback, gets better fuel economy than the first generation, and
has an MSRP about the same as a Camry, the 2004 model may well attract
more mainstream buyers who might otherwise buy a Camry, Accord, etc.
(rather than a Civic Hybrid, a VW diesel car, or some other good fuel
economy car like an Echo, Corolla, or Civic).

--
------------------------------------------------------------------------
Timothy J. Lee
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