windshield fluid sprayer

[Huw Powell]

nah, the hot freezes first.

most of the energy required to be removed is at the state change anyway.

The hot water has less gas dissolved in it (the bubbles you see coming
out when water boils are partly steam, partly dissolved gas), the gas in
the colder water intereferes in the waters ability to form ice crystals
and slows down the process.

Remember, it's not just an issue of heat exchange.

If you mix two liquids they can have a combined lower freezing point, by
interfering in the crystallization process... hmmm, can anyone guess at
a relevant example?

Richard Hoffman wrote:
>
> I'll second this...  what happens is that the cold water freezes
> first....but the hot water loses energy (heat) much faster than the cold.
>
> Richard
> 1990 CQ 195K
> ----- Original Message -----
> From: "Robert Myers" <robert at s-cars.org>
> To: "Phil Payne" <quattro at isham-research.com>; <duane at zk3.dec.com>; "Quattro
> List" <quattro at audifans.com>
> Sent: Thursday, November 29, 2001 1:17 PM
> Subject: Re: windshield fluid sprayer
>
> > --
> > Bullpucky, Phil.  Absolute nonsense.  The colder sample freezes
> > first.  There is simply no way around thermodynamics.  The hot sample must
> > first lose heat to reach the starting temperature of the colder
> > sample.  This takes time during which the colder sample has reached a
> lower
> > temperature and/or has started already to freeze.
> >

--
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/