Gravity Hot Water Heating [RE-wrenches]

[Windy Dankoff, Dankoff Solar]

<x-flowed>
>I came across an English Tudor Home built is 1928 with a gravity hot water
>system with and old Red Flash Coal Boiler....
>A Bell & Gussett pump P3-6 1-1/2  was added in 1955 That circulates the huge
>volume of water in the system. ...
>The existing circulator pump take a lot of electric power and we want to
>change it.
>What would be the most efficient pump that could be installed on this
>system?
>The pipes are big so the flow resistance is small 
>Jim Lamb
>Middlefork Engineering


Jim,

Will the anticipated PV system be battery or non-battery grid-tie? If 
it's a battery system, you might consider a SunCentric DC pump. It 
will pump hot water to 55 GPM if you get the "high temperature 
option".

If it's used only for solar heat circulation, you can use one of our 
non-battery models to run by direct-PV.

You can find specs on www.dankoffsolar.com

If you don't want DC because it's a grid-tie non-battery system, 
consider an AC magnetic coupled hot water circ pump, an industrial 
item available in a variety of sizes from various makers.

Windy

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

==^================================================================
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9
Or send an email to: RE-wrenches-unsubscribe at topica.com

T O P I C A -- Register now to manage your mail!
http://www.topica.com/partner/tag02/register
==^================================================================


</x-flowed>