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Home > Archive > Alternative Power sources > November 2005 > Looking for Heat Reclamation Unit for Oil Fired Furnace Flue
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| Author |
Looking for Heat Reclamation Unit for Oil Fired Furnace Flue
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| Mark & Mary Ann Weiss 2005-11-27, 5:21 am |
| I saw these on a web site a few years back, but Google only comes up with
industrial systems when queried now.
The unit I recall seeing consisted of a steel box with transverse mounted
tubes, through which a thermostatically-controlled electric fan forced air.
I can't find this unit anymore!
Does anyone have a link to a site where I can purchase this? They ran about
$115 last time I saw one.
--
Take care,
Mark & Mary Ann Weiss
VIDEO PRODUCTION • FILM SCANNING • DVD MASTERING • AUDIO RESTORATION
Hear my Kurzweil Creations at: http://www.dv-clips.com/theater.htm
Business sites at:
www.dv-clips.com
www.mwcomms.com
www.adventuresinanimemusic.com
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"Mark & Mary Ann Weiss" <mweissX294@earthlink.net> wrote in message
news:5meif.5187$Mj.596@fe04.lga...
> I saw these on a web site a few years back, but Google only comes up with
> industrial systems when queried now.
>
> The unit I recall seeing consisted of a steel box with transverse mounted
> tubes, through which a thermostatically-controlled electric fan forced
air.
> I can't find this unit anymore!
>
> Does anyone have a link to a site where I can purchase this? They ran
about
> $115 last time I saw one.
>
> --
> Take care,
>
> Mark & Mary Ann Weiss
before you go off half cocked on an idea. You had best consult a pro in your
area. Get the specs on the flue for your furnace. Oil tends to put out
particles that will obstruct the exchanger your planning on using. ANY
large restriction will create more problems than it solves.
You will need a fair amount of restriction to do any good.
The one I saw was for a wood burning stove.
http://www.northerntool.com/webapp/...matchallpartial
This product is not made for your application.
Your money would will be better spent by a new furnace, or upgrades to the
one you have.
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| barry@sme-online.com 2005-11-28, 1:21 pm |
| Like, maybe, an automatic flue damper, and finding out just how "small"
a spray-nozzle would suffice come Jan/Feb for starters.
J
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| nospam.clare.nce@sny.der.on.ca 2005-11-28, 3:21 pm |
| On Sun, 27 Nov 2005 03:43:10 -0500, "Mark & Mary Ann Weiss"
<mweissX294@earthlink.net> wrote:
>I saw these on a web site a few years back, but Google only comes up with
>industrial systems when queried now.
>
>The unit I recall seeing consisted of a steel box with transverse mounted
>tubes, through which a thermostatically-controlled electric fan forced air.
>I can't find this unit anymore!
>
>Does anyone have a link to a site where I can purchase this? They ran about
>$115 last time I saw one.
Be VERY carefull. If you do not have a forced vent (and MOST oil
burners do not) the flue gasses MUST retain enough heat to provide an
adequate draft. Cooling the flue gasses too much will KILL YOU. CO
poisoning is NOT a nice way to go.
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| Mark & Mary Ann Weiss 2005-11-28, 7:21 pm |
|
> about
>
> before you go off half cocked on an idea. You had best consult a pro in
your
> area. Get the specs on the flue for your furnace. Oil tends to put out
> particles that will obstruct the exchanger your planning on using. ANY
> large restriction will create more problems than it solves.
> You will need a fair amount of restriction to do any good.
>
> The one I saw was for a wood burning stove.
>
http://www.northerntool.com/webapp/...ch?storeId=6970
&N=0&Ntk=All&Ntt=flue&Nty=1&D=flue&Ntx=mode+matchallpartial&Dx=mode+matchall
partial
>
> This product is not made for your application.
>
> Your money would will be better spent by a new furnace, or upgrades to the
> one you have.
I don't have $4000 for a 'new' furnace (besides, the new ones seem to have a
lot of flammable plastic parts around the fire chamber), but I can afford
$115 for the unit I was describing but cannot find today on Google.
Since I installed this furnace myself over 35 years ago, I'm familiar with
the thermodynamic issues involved. The amount of waste heat is so excessive
that I could afford to lower the stack temp considerably before any danger
of condensation/creosote buildup would be a problem.
A new furnace would cause the same problem you're warning me about : it would
extract so much heat that the flue temp would be very low, possibly too low
to prevent acidic condensation buildup. Our Bock 32E water heater uses one
of these efficient designs and the stack is cool enough to touch when it is
in operation. Our furnace flue, OTOH, radiates heat like a wood burner. I'd
like to reclaim some of that heat!
I also have a CO detector located in the stairwell leading to the boilers.
It has detected 0ppm of CO so far this winter. My stacks are operating well
and the furnace is well tuned, running more lean with a lot of air flow.
....but I can do better by not throwing all that heat out the chimney.
--
Best Regards,
Mark A. Weiss, P.E.
www.mwcomms.com
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| Mark & Mary Ann Weiss 2005-11-28, 7:21 pm |
|
" Solar Flare" <sf.lare@hotmail.invalid> wrote in message
news:pMSdnRptnbJ4mRfeRVn-uA@golden.net...
> When it comes to your spam signature, your tenor sax
> player is completely tone deaf.
LoL, that was my first videotaped music recording of multiple musicians.
BTW, that tenor played with Woody Herman, so he can't be THAT bad. :-)
--
Take care,
Mark & Mary Ann Weiss
VIDEO PRODUCTION • FILM SCANNING • DVD MASTERING • AUDIO RESTORATION
Hear my Kurzweil Creations at: http://www.dv-clips.com/theater.htm
Business sites at:
www.dv-clips.com
www.mwcomms.com
www.adventuresinanimemusic.com
-
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| nospam.clare.nce@sny.der.on.ca 2005-11-28, 9:21 pm |
| On Mon, 28 Nov 2005 18:07:21 -0500, "Mark & Mary Ann Weiss"
<mweissX294@earthlink.net> wrote:
>
>
>I don't have $4000 for a 'new' furnace (besides, the new ones seem to have a
>lot of flammable plastic parts around the fire chamber), but I can afford
>$115 for the unit I was describing but cannot find today on Google.
I just had a brand new gas furnace installed for under $3000. If I was
able to install it myself it would have been closer to $2000. It has a
forced vent and insulated chimney liner.
>
>
>I also have a CO detector located in the stairwell leading to the boilers.
>It has detected 0ppm of CO so far this winter. My stacks are operating well
>and the furnace is well tuned, running more lean with a lot of air flow.
>...but I can do better by not throwing all that heat out the chimney.
You are shooting more heat out the chimney with the burner off than
on, in most cases. A power damper solves this.
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| Mark & Mary Ann Weiss 2005-11-30, 6:21 pm |
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> I just had a brand new gas furnace installed for under $3000. If I was
> able to install it myself it would have been closer to $2000. It has a
> forced vent and insulated chimney liner.
I still can't afford that. I have big propert tax bills to pay and this
year's revaluation.. well let's just say I don't know where the money will
come from. I have to cut down on oil consumption to make up the difference.
boilers.[color=darkred]
well[color=darkred]
>
>
> You are shooting more heat out the chimney with the burner off than
> on, in most cases. A power damper solves this.
I wanted to do this originally, but I heard these devices were taken off the
market.
I designed a flue damper with failsafe micro switches that prevent the
burner from starting unless the damper is fully open, but I have not been
able to come up with the $$$ to fabricate one. Who sells these? Perhaps a
combination of these two technologies would save me tons of oil.
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