Group: alt.energy.homepower
From: sno
Date: Tuesday, September 04, 2007 3:40 PM
Subject: Re: Emergency Power from a Prius



Daniel Who Wants to Know wrote:
>
> "RW Salnick" wrote in message
> news:fbkbe5$v7o$1@ ...
> > Daniel Who Wants to Know brought forth on stone tablets:
> >> "Moe" wrote in message
> >> news: $ @ ...
> >>
> >>>Power to the People: Run Your House on a Prius
> >>>During a recent six-hour power failure, Mr. Factor estimated that his
> >>>2005 Prius used less than one gallon of gasoline.
> >>> /2007/09/02/automobiles/ ?_r=2&oref=slogin&oref=slogin
> >>
> >>
> >> As I wrote in the Toyota Newsgroup when "Jeff" posted this:
> >>
> >> This is not new news to me as I have known for months that this is
> >> possible
> >> and I don't even own one. You can also pull about 1kw from the 12v bus
> >> continuously as long as the car is in "READY" mode.
> >
> >
> > ... and I can pull approximately KW from the 12V bus continuously in
> > my 1985 TransAm (100 amp alternator), as long as it is in "Ready" mode. In
> > fact, one can pull about KW from the 12V bus in *any* car equipped
> > with a 130 amp alternator.
> >
>
> The Difference is that the output of alternators depends on engine speed and
> that to provide full power continuously the car would have to at least be at
> high idle. Also most alternators on cars will overheat and burn out if
> asked to provide full rated amperage for very long. To get full output for
> hours instead of minutes would require a truck or ambulance alternator that
> was designed for a 100% duty cycle. Also to provide that output the engine
> would have to be on at all times just to spin it which would use lots of
> gas. The Prius OTOH doesn't have an alternator, it has a liquid cooled 100
> amp dc-dc converter which uses the HV bus to supply the 12v bus. Because of
> this not only will it provide the full output until the car runs out of gas
> but since the engine only cycles on a few times an hour to recharge the
> traction battery it would consume less gas for the same output which means
> more time between refills.

Hmmmmm....wonder if could take a wrecked prius and hook it up through
an inverter.....and disconnect from the grid....would have to work
out gallons per kw/h.....and how long could expect to last before
rebuild/replacement.....does anyone have any efficiency numbers...???

have fun......sno

--
No matter how dangerous nuclear power may or
may not be.....
Is it any more dangerous then what we are doing
now.....???

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