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<DIV><FONT face=Arial>Dear John</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>A lot depends on the heater output, and the heat loss in
the adjacent room.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>You can calculate the heat you can move with such a fan,
as follows:</FONT></DIV>
<DIV><FONT face=Arial>Q = 1.08 x cfm x (Th -Tc)</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Q = heat in the air, BTU/Hour</FONT></DIV>
<DIV><FONT face=Arial>cfm = fan delivery volume, in cubic feet per
minute</FONT></DIV>
<DIV><FONT face=Arial>Th = Temperature in Degrees F, at the ceiling of the
heated room</FONT></DIV>
<DIV><FONT face=Arial>Tc = Temperature of the cold air returning from the cold
room through the door to the hot room, Degrees F</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Before you start boring holes in the wall, get a length of
4" diameter clothes dryer ducting and a computer fan of the size you are
considering. Mount the fan in the doorway, and use a short length of the clothes
dryer duct to deliver "ceiling air" down to the computer fan, for discharge to
the cool room. </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>You could also get a "Summertime Cooling Fan", about 10"
diameter, mount it close to the ceiling of the hot room, blowing downward, to "a
home made cardboard ducting elbow" discharging above the door, into the cool
room. </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Another possibility is to use such a fan to blow cool
floor air from the cool room into the warm room, directly toward the overheated
stove. This would encourage movement of hot ceiling air through the top of the
door, into the cooler room.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>The above are "ugly solutions." Tell The Wife that once
you get something that works, you will install a pretty solution.
:-)</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Best wishes,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Kevin</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=jmdavies@telkomsa.net href="mailto:jmdavies@telkomsa.net">John
Davies</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org">Discussion of biomass cooking
stoves</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, June 08, 2012 3:14 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Stoves] moving warm air</DIV>
<DIV><BR></DIV>
<DIV class=WordSection1>
<P class=MsoNormal>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></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>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></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Would this be successful ? What wattage fan would
move how much air ? Is the idea viable?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Your thoughts would be welcome.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>John Davies,<o:p></o:p></P>
<P class=MsoNormal>Experiencing the first winter chill.<o:p></o:p></P></DIV>
<P>
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