Re: [DML] FOG MACHINES

["doctor who" <ohwrd@xxxx>]

Chemical foggers use very pure glycol and occasionally mixed down 
w/distilled water. The fogger takes a small amount of fluid and converts it 
into vapor form in a heat exchanger at at temp ~190-250 degrees (dependent 
on altitude and the volume of the fogger).

The newly converted glycol then becomes a suspension in the air, being 
slightly thicker than air, but having a almost equal gas weight. The glycol 
itself is very thin and it takes high concentrations for long periods of 
time before you will see or notice a visible residue.

The glycol itself converts back to liquid form once it cools down, which is 
why (besides air dilution) you have to run a fog machine again to refill a 
room.

There are a few different types of glycol (@different water concentrations) 
There is the standard concentration, the Stage/Theatre concentration (10%) 
and the TSX (15%). TSX is used in combination w/a regular ice or dry ice 
chiller to keep the fog close to the floor.
Care must be taken w/chilled fog becuase the fog picks up water molecules 
that make it heavier and keep it from expanding/diluting as fast, which can 
result in glycol buildups. (Basically the floor becomes a slip hazard).

Glycol is diluted using water, making it easy to clean off of non-porous 
surfaces, using just water, and slightly soapy water on the porous surfaces. 
Of course you probably will not notice any residue unless your vehicle is 
located w/3 foot of the NOZZLE of the fogger (where the fog is hottest) 
and/or is being bombarded w/fog over a period of days.

essentially the stuff is harmless, I've used the chilled fog on a rosewood 
dance floor, 2 shows a day for 2 weeks, w/nothing other than a slightly damp 
mop to clean it.

hope that helps,
dr c.

From: dongowler <dongowler@xxxx>
Reply-To: dmcnews@xxxxxxxxxxx
To: dmcnews@xxxxxxxxxxx
Subject: [DML] FOG MACHINES
Date: Thu, 01 Jun 2000 08:39:56 -0500


Brian wrote;

I have been asked to allow my DMC to be used as the centerpiece at a
convention. -- the contact man called me today and asked if
they could use a fog machine near the car. He says it's the kind that
uses
chemicals and not dry ice to make the fog. They want the doors to be
open
all evening. My question to the group is his: do I let them use the fog

machine or do I tell them no way? Does anyone know if these kinds of
fog machines produce anything that might be harmful to the DeLorean's
interior or exterior?

I had my 82 presented in a convention several years ago and
they used a fog machine near the car to enhance it's entry to the
crowd. All went spectacularly well and I have never noticed any effect
from the fog. Go for it man! Be sure to video it as well.

The Silver Fox
Vin #'s 01149 & 10788


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