DC Pumps [RE-wrenches]

[Travis Creswell, Ozark Solar]

Hi Jeff,

Any chance of setting up the wood fueled water heater to thermosiphon to the
house?  You don't really mean a boiler do you?  All I know of (and that
ain't much) that can do that kind of flow at any that head would be a
Dankoff SunCentric (brushed, with an 8000 hr brush life I think) with high
temp option at well over $700 before the high temp option.  You could buy a
few extra modules and a 008 for that kind of money.  Could you do a few El
Sid or Hartell pumps in series to get the flow rate up?  Or is it the head
that goes up when you put pumps in series?  I bet Windy would know.

There going to be stuffing wood in that water heater daily so they might as
well get used to running the gennie a few hrs every day in between feedings.
I have been faced with this several times and the only solution that the
customer would buy was running the generator vs. paying gobs extra for DC
pumps amd more zones becuuse of the small capacity of the DC pumps.

Well I only had more questions and no answers.

Travis Creswell
Ozark Solar


----- Original Message -----
From: "Jeffrey Wolfe, Global Resources" <global at sover.net>
To: <RE-wrenches at topica.com>
Sent: Friday, June 29, 2001 4:49 PM
Subject: DC Pumps [RE-wrenches]


> Hi all,
>
> We're doing the pump for a hot water heating system. Not our design for
the
> heating system, and against some of our recommendations, but the folks
have
> gotten themselves into a large wood boiler located in an out-building.
Both
> the plumber and I have figured they need about 6 gallons per minute and
> about 12 - 14 feet if head. (this is just for from the boiler to the
> storage tank inside. We'll be using El Sids for the radiant loops.)
>
> Anyone know of a pump that will do this with 220 degree water (usually
> cooler, but could get this hot.)
>
> I'd really like a brushless DC unit. The battery bank is at 48V, but we
can
> also do 24 or 12, either with a converter, or direct wire if the amp draw
> is small enough. I've been down the brush road, and for pumps that see a
> few thousand hours a year, it's not the way I want to go anymore...
>
> The AC unit the industry would normally use is a Taco 008 cartridge
> circulator which uses about 90 watts.
>
> Thanks for any help.
>
> Jeff
>
> Jeffery D. Wolfe, P.E.
> Global Resource Options, LLP
> A Woman-Owned Limited Liability Partnership
> 4 Kibling Hill Road
> P.O. Box 51
> Strafford, VT 05072
> 800-374-4494 Toll Free
> 802-765-4632 Phone
> 802-765-9983 Fax
> global at sover.net
> http://www.GlobalResourceOptions.com
>
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