Sounds like you were getting a little carbonic acid with the water collecting in the probe...
Paul
Paul Edwards
Process/Quality Engineering
Surface Art Engineering
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Bogden
Sent: Wednesday, January 05, 2011 12:04 PM
To: [log in to unmask]
Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body - Found word(s) remove list in the subject
We used a conductivity probe and meter.
Mike B
________________________________
From: Paul Edwards <[log in to unmask]>
To: [log in to unmask]
Sent: Wed, January 5, 2011 1:41:34 PM
Subject: Re: [TN] Deionized water in misting fans and static electricity - Found
word(s) remove list in the Text body
Ok guys... remember your chem. & physics....
It doesn't matter what you put in the air stream as particulates, remember these
are particulates not moisture vapor...The individual particles will charge in a
moving air stream when there are different potential voltages around because the
surface of the particular charges...
Thunderstorms... updrafts sweep chargeable mass to collection areas prior to
discharge via lightning...
Also if I remember correctly ~300v/m atmospheric potential in a free open
environment...
And Mike... how did you measure that...
Paul
Paul Edwards
Process/Quality Engineering
Surface Art Engineering
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Herring
Sent: Wednesday, January 05, 2011 11:25 AM
To: [log in to unmask]
Subject: Re: [TN] Deionized water in misting fans and static electricity - Found
word(s) remove list in the Text body
If you don't remove the minerals from the water, then the nozzle
apertures will eventually clog.
Steven E. Herring
Engineering Manager
Pennatronics
75 Technology Drive
California, Pa 15419-0638
P 724-938-1800 x 214
F 724-938-1809
[log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of R Sedlak
Sent: Wednesday, January 05, 2011 2:23 PM
To: [log in to unmask]
Subject: Re: [TN] Deionized water in misting fans and static electricity
Steve:
It ain't clear that the DI is doing it, but it does make sense, since
the DI is SO much less conductive, lacking any ions in it, that it could
hold a charge a lot better than tap water.
Maybe you want to consider using soft water, to eliminate the chlorides,
but retain the ionic strength?
Rudy Sedlak
--- On Wed, 1/5/11, Steve Gregory <[log in to unmask]> wrote:
From: Steve Gregory <[log in to unmask]>
Subject: [TN] Deionized water in misting fans and static electricity
To: [log in to unmask]
Date: Wednesday, January 5, 2011, 10:31 AM
This may be an off the wall question but here goes.
We have some misting fans that we use for humidification that we've just
recently put in a deionized water source for.
Now it seems that there's a static charge being generated at the fans
that
I've never noticed before. Could it be possible that we're generating a
charge at the fans because of the DI water?
Steve
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