Date:         Fri, 26 Nov 2010 08:22:25 -0800
Reply-To:     Alistair Bell <albell@SHAW.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Alistair Bell <albell@SHAW.CA>
Subject:      Re: Frozen Windshield Washer Fluid Tip
Comments: To: David Beierl <dbeierl@ATTGLOBAL.NET>
In-Reply-To:  <4cefa890.8e4ee50a.7aa1.460d@mx.google.com>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

I hate to say it, but I actually know something about yeast and alcohol.

You can have higher alc tolerant yeast.  I've "convinced"  a pretty
standard strain to stay alive up to 16.5%. Some strains have been
developed that will tolerate higher, up to 20% (and maybe more?) I
think. But how well they grow at those levels I have no idea.


Back to the wiper fluid freezing... don't most of the mixes use
methanol as the alc?

here are some data on amount (vol%) of methanol in water and freezing
point of mix (temps in celcius):

amount of methanol                                      freezing pt.

0                                                                       0
13                                                                      -7
24                                                                      -18
35                                                                      -26
46                                                                      -40
56                                                                      -54


So you can see that, if the fluid is sold as "good to -20C", it has
about 24-25% by vol. methanol. And then you just have to reduce the
methanol conc. by half, either by evaporation (I wonder how long that
takes at low temps) or by dilution from melted snow, for the mix to
freeze at -7C.

I wonder which is happening when the nozzles freeze?


alistair



On 26-Nov-10, at 4:30 AM, David Beierl wrote:

At 06:05 AM 11/26/2010  -0500, Mike wrote:
> I don't know about any bread that bakes for over 2.5 hours.....
> Mike B.

Dang -- are you sure?  Maybe that's what I'm doing wrong.  Funny, the
recipe says "Dwarf Battle Bread" but I've never been able to get it
to take an edge.  I waS thinking it might be the Sakrete. <g>

But seriously, it doesn't have much to begin with -- the yeasty
beasties die at ?12%? or so, but I don't think there's enough to
taste when it goes in the oven.  That doesn't take away from your
point, though.

"We never eat cookies because they have yeast,
And a mere bite of one turns a man to a beast.
Have ever you seen such an awful disgrace
As a man in the gutter with crumbs on his face?

Away, away with Rum, by gum,
With Rum by gum, with Rum, by gum!
Away, away with Rum, by gum!
It's the song of the Temperance Army."

Yrs,
d