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cheap and easy space heater panel?

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Posted by Father Haskell on December 21, 2008, 10:13 am
20 or so feet of 4" flexible aluminum dryer vent stuffed into
a glazed box, maybe 2 x 3 feet by 6" deep.  I assume this
has been done?

Posted by schooner on December 21, 2008, 10:55 am


4" would be rather big, the smaller the better as you don't want the
collector depth to be that large.
We used 3" in ours, but ideally 2-2.5" would be best but don't think they
make that size.

Posted by nicksanspam on December 21, 2008, 12:49 pm

Why all the dryer vent, vs a glazed box that's colored dark on the inside?

And why 2x3'? Anything less than 4'x8' seems like a toy, for space heating.


Posted by Charlie on December 21, 2008, 1:54 pm
 nicksanspam@ece.villanova.edu wrote:

Has anyone tried the common size vent tube but flattening the tube into
an elongated oval before installing? Seems that it would get the surface
area to volume ratio up while still utilizing readily available material.


Posted by schooner on December 21, 2008, 2:00 pm

We just used the 3" round as is but did try flattening one as a test.  It is
easier to construct with it round in terms of making the holes ino the
collector boxes 9using hole saw), and keeping it evenly sized. Also looks
more professional when done since it is hard to flatten them evenly without
it denting and such.


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