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Dear John,<br>
<br>
I agree with your thought of moving hot air that is very close to
the stove. Keep it in the duct and use one or more fans that are
"in-duct" or "booster fans" to move the extra hot air well.<br>
<br>
I assume you still live in Secunda, South Africa. There"central
heating" systems are not common. But your solution is essentially
a small version of one. You could even have a second duct that
brings cool air from the second room back to the furnace.<br>
<br>
Are you doing any more work on your coal TLUD stove? And could
that also be hooked up with air ducts?<br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Paul S. Anderson, PhD aka "Dr TLUD"
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a> Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
<br>
On 6/17/2012 9:35 AM, John Davies wrote:
<blockquote cite="mid:000001cd4c96$7d094fa0$771beee0$@telkomsa.net"
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Dear
Martin,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
stove is a Beckers 385, with 11Kw output, for 340m3 heating
area. It has 2 air heating ducts, which heat air with the
flue gas before entering the chimney.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
problem is that it is in a room of 77M3 with a standard
doorway leading into a passage way. A fair amount of warm
air circulates to the rest of the house, but not enough to
prevent hot air concentrating in the room.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Itried
blowing cold air into the room at ground level, with a
standard room fan. This made the room more comfortable, and
forced warm air into the passage way. This is not
practical, and the fan mentioned uses a fair amount of
power.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I
think that the way to go is to use a fan in a duct which
sucks in the hot air leaving the stove.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanking
you,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">John
Davies.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">It
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US"> <a class="moz-txt-link-abbreviated" href="mailto:stoves-bounces@lists.bioenergylists.org">stoves-bounces@lists.bioenergylists.org</a>
[<a class="moz-txt-link-freetext" href="mailto:stoves-bounces@lists.bioenergylists.org">mailto:stoves-bounces@lists.bioenergylists.org</a>] <b>On
Behalf Of </b>Boll, Martin Dr.<br>
<b>Sent:</b> 15 June 2012 10:33 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br>
<b>Subject:</b> Re: [Stoves] moving warm air<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="DE">Dear John,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">Your problem with too much heat in the room of
the stove will be more complex. I guess you will not solve
the problem by only moving some hot air to another room. <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">I guess by my experience with a big stove, that
a good amount of the heat will be released by your stove in
form of radiation. If it is like this, I guess you have to
shield the surrounding of the stove a lot from the radiation
of the stove, that you will not feel so uncomfortable hot
(as in the summer-sun) and to use the radiation to warm up a
medium (air or some liquid or fast material absorbing the
heat) and bring the radiated energy in that (captured) form
into another room. <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">Example: some oil-filled radiators, which are
electrically heated and can be moved to another space when
warmed up, to warm another room, when brought there.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">I guess it was worth a test, to concentrate the
spread radiation onto a tube by a Rinnenkollektor ( I don’t
know the English expression: e.g a Rinnenkollektor could
consist of a half-pipe reflector with tube in its
focus-line)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">-you could test, it with a plastic
dirty-water-tube cut into a 1/3 tube and lined with
aluminium-foil, which concentrates the radiation onto a
blacked copper-tube. In this copper-tube you could measure
the temperature, to know if the temperature was useful for
the other room.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">The simpler way was, to hang close to the stove
some bags filled with material that could absorb heat, and
to remove them after being heated, to cool down in the
neighbour-room.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">In that time of heating the bags you could
feel, if the felt temperature in the room with the stove was
agreeable. – My idea: Hang up some wet towels for a short
time, to shield against the radiation. So you can feel (for
a short time) immediately, if the radiation makes the
feeling of too much heat or if it was the too high
temperature of the air.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">I know your problem, because I have a 14.5 kW
high-mass stove which is heating a 120 m3 room. It feels
feels to hot in the room, if the stove is really good fed,
and gives much heat by its big surface. (5 m2) <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">I thought about transporting hot air to a
neighbour room to solve the problem, but I am nearly sure,
it will not solve the problem, because the stove has a very
big surface which radiates. If you would be interested, I
could give you the address of the factory in Germany, to
give you an impression of my stove to compare with yours.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">Happy to have now summer-time in Germany-; but
the temperatures are actually so low, that we use a little
bit the space-heating-stove.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">Interested how you think about and deal with
that problem.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">Have a comfortable feeling by your stove.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB">Martin <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>Message: 3<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>Date: Fri, 8 Jun 2012 20:14:44 +0200<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>From: "John Davies" <<a
moz-do-not-send="true" href="mailto:jmdavies@telkomsa.net">jmdavies@telkomsa.net</a>><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>To: "Discussion of biomass cooking stoves"<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">> <<a moz-do-not-send="true"
href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>Subject: [Stoves] moving warm air<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>Message-ID: <<a moz-do-not-send="true"
href="mailto:000301cd45a2$95eba7c0$c1c2f740$@telkomsa.net">000301cd45a2$95eba7c0$c1c2f740$@telkomsa.net</a>><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>Content-Type: text/plain;
charset="us-ascii"<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>I have recently moved house, and have a
dilemma. I have an anthracite heater in one room which is
uncomfortably warm. I wish to >move the warm air into
adjacent rooms to have a more even heating of the house.
There is an open doorway leading into a >passageway, but
the air movement is insufficient.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">> <o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>My thoughts are to bore holes through the
walls the size of a computer fan and mount such fans in the
holes to distribute the warm >air.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">> <o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>Would this be successful ? What wattage
fan would move how much air ? Is the idea viable?<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>Your thoughts would be welcome.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>John Davies,<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB">>Experiencing the first winter chill.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Courier New""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-GB"><o:p> </o:p></span></p>
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