Re: peltier junction for A/C

["Scudder, Henry J" <Henry.Scudder@WEST.BOEING.COM>]

Jeremy
        How did you measure the 51.4 watts of heat?

Hank

> ----------
> From:         Jeremy A. Green[SMTP:jag@BROWNOUT.COM]
> Reply To:     Electric Vehicle Discussion List
> Sent:         Monday, March 30, 1998 7:02 PM
> To:   Multiple recipients of list EV
> Subject:      Re: peltier junction for A/C
>
> To clarify, the figures I gave were for the whole array of 6 wired in
> parallel.  They draw 6 amps a piece at 12 volts and move 51.4 watts of
> heat
> so that's 72+51.4 watts (123 watts) to get rid of on the hot side
> right?
> How does this compare to the efficiency of a compressor?
> I guess you could also wire them serially and run the off the high
> voltage
> (maybe with a resister if you don't have a ton of them).
>
>                 -Jeremy
>
> >    Actually from what I've read peltier junctions have lousy
> efficiency.
> >There only saving grace is their small size (plus no moving parts)
> i.e.
> >the're great for a litle cooler that would be way to small to build a
> >compressor for.
> >
> >    Also they generate more heat than they move,  for example the one
> you
> >describe uses 432 watts, and moves 51.4 watts of heat from the cold
> side to
> >the hot side.   The hot side is going to have 300-400 watts of heat
> that you
> >have to get rid of.
> >
> >
> >
> >>Hello,
> >>
> >>Has anyone explored using peltier junctions for air conditioning in
> their
> >>EV?  I don't know if they can move enough heat (I haven't played
> with them
> >>yet) but it seems like a pretty efficient way to cool the vehicle.
> Any
> >>ideas?
> >>I saw a place selling 40 mm 51.4 watt peltier junctions for $10 a
> piece.
> >>I wonder if 6 of them would make any noticable difference in
> temperature.
> >>It would draw about 36 amps at 12 volts though...  how many amps
> does a
> >>normal air conditioning system consume?
> >>
> >
> >
> >
> >Re:      peltier junction for A/C
>
>
> _______________________________________________________________
>                                Jeremy Green
>         jag@world.std.com           jag@brownout.com
>        http://www.brownout.com mailto:jag@brownout.com
>
>
> Re: peltier junction for A/C
> R
>
RE: peltier junction for A/C