William,
A picture of a "closed loop" heat exchanger doesn't require much
imagination.
Picture the following in a circular loop:
A liquid resevoir (1/2 gallon, sometimes more, maybe less, depending upon
need) heated by your fuel of choice, and a method of circulation (pump or
convection) that continually cycles the fluid in a loop. An appropriate
pressure release ("vent") is installed should over pressurization occur from
a heat source that has gone or is erratic.
I suppose the term "open" or "closed" has more to do with the transfer
medium, with air type exchangers (such as those installed in the exhaust
stream of wood stoves) being considered an "open" exchange and those where
the medium is liquid being "closed."
The "loop" fraction of the description would come from the medium
continually being recycled, reducing the amount of heat needed to be
transferred in order to recharge the system to a level that a "requisite"
amount of heat in turn be exchanged.
Intake on the plenum of a central heat or cooling unit might be considered
"closed loop."
Todd Swearingen
----- Original Message -----
From: "William Clark" <[EMAIL PROTECTED]>
To: <biofuel@yahoogroups.com>
Sent: Wednesday, August 27, 2003 9:47 AM
Subject: Re: [biofuel] open flame heat sourses (was: aaron--don't do it)
> Hello to all,
>
> Would Todd or some other send a description of a closed loop heat
exchanger?
> I would greatly appreciate it.
>
> Bill Clark
> ----- Original Message -----
> From: "Keith Addison" <[EMAIL PROTECTED]>
> To: <biofuel@yahoogroups.com>
> Sent: Monday, October 27, 2003 3:07 AM
> Subject: Re: [biofuel] open flame heat sourses (was: aaron--don't do it)
>
>
> > Hi Aaron
> >
> > >Todd: Of course I would use a closed loop heat exchanger. Good call on
> the
> > >differences of wood flames and propane flames, though.
>
>
>
> Biofuel at Journey to Forever:
> http://journeytoforever.org/biofuel.html
>
> Biofuels list archives:
> http://archive.nnytech.net/
>
> Please do NOT send Unsubscribe messages to the list address.
> To unsubscribe, send an email to:
> [EMAIL PROTECTED]
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
------------------------ Yahoo! Groups Sponsor ---------------------~-->
Rent DVDs from home.
Over 14,500 titles. Free Shipping
& No Late Fees. Try Netflix for FREE!
http://us.click.yahoo.com/ybSovB/hP.FAA/3jkFAA/FGYolB/TM
---------------------------------------------------------------------~->
Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html
Biofuels list archives:
http://archive.nnytech.net/
Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED]
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
