Demand heater for SHW backup [RE-wrenches]

[Jeff Wongstrom]

<x-flowed>


Todd,

There once was an automatic draft blocker consisting of bimetallic  
vanes that twisted open and close.  I think  there were some failures  
which either killed someone or freaked out the manufacturers over  
liability issues and so they were withdrawn from the market.

Jeff Wongstrom
NABCEP Certified Solar Installer
Thirsty Lake Solar
406-889-5324


On Aug 21, 2007, at 6:20 PM, Todd Cory, Mt. Shasta Energy Services  
wrote:

>
> This is true, the standby losses (up to 40%) on a tank style gas  
> water heater are horrible. The whole time the unit is not heating,  
> the convection up the center flue is cooling the tank. I am  
> surprised no one ever came up with an automated draft blocker on  
> these units.
>
> Todd
>
>
>


--
[Non-text portions of this message have been removed]


- - - -
Hosted by Home Power magazine

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

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

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

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

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael_welch at sbcglobal.net

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

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------


</x-flowed>