Re: Little Giant Pumps

[Tom Droege <tdroege@veriomail.com>]

Lee John and all,

For that (and other) reasons, I am using "Pet Safe" anti-freeze which I 
believe is propylene glycol which is less toxic.

I recall the D2O2 problem is not well established.  Some rumor, some fact, 
I think they do not have a good measurement.

Tom Droege

At 09:19 AM 3/26/01 +0000, you wrote:
>Dear Tom
>
>PLEASE no sucking on any tubing containing glycol! Even a part of an ounce 
>will make you very sick. Two ounces or more as I recall can do you in.  I 
>am posting this to you only till I find my copy of SAX  from which I can 
>post accurate limits. (Old fashoned transmission 90wt oil is not to be 
>gotten on ones self either and while I am at it no D2O2 martinis also.)
>
>Love
>Lee John
>
>
>>From: Tom Droege <tdroege@veriomail.com>
>>To: tass@listserv.wwa.com
>>Subject: Little Giant Pumps
>>Date: Sun, 25 Mar 2001 16:40:27 -0600
>>
>>Sigh!  I have spent the last few hours with anti-freeze dripping off my
>>chin.  Everything is on the floor and I have to crawl around to fix the
>>water system.  I now have a bare trickle running through the system.  It is
>>probably enough.  One does not need much.
>>
>>Let's see:
>>
>>Allow a 5 F rise through the system.  There is about 3 amps max drawn by
>>the TECs.  This is 36 watts.  One has to get rid of this plus the heat
>>pumped out of the cold side.  Let's guess 7 watts per camera.  That is then
>>a total of 50 watts.  This is 170 btu/hr.  170btu/5F = 34 pounds per
>>hour.  At 8 pounds per gal this is 4 1/4 gal per hour.  Hmmm!  I wonder
>>what it is.
>>
>>OK, I measured it.  I am getting 2.2 gph.  So the temperature rise is more
>>like 10 F.  This means that the down stream camera is seeing 5 F hotter
>>water than the upstream one.  This will cost 2.7 C over what I could get
>>with higher flow.  2.2 gph is really just a trickle.
>>
>>The problem is those nice self sealing disconnects that I use on the back
>>of the camera.  They do not have a very large orifice, and it tends to get
>>clogged.  So take care.  I have reconnected the water filter even though it
>>causes a pressure drop.
>>
>>I think I need a Medium Giant pump instead of a Little Giant.
>>
>>Tom Droege
>>
>
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