[Stoves] Stratifying TLUDs for 'turn down'

[Ray Menke]

On Mon, Jan 16, 2017 at 7:03 AM,  <neiltm at uwclub.net> wrote:
> I
> particularly liked the neat and robust looking 'throttle butterfly'
> utilising what looks like the screw on cover to an LPG cylinder?

Neil, Most of my primary air inlet tubes came from a discarded child's
swing set.  The butterfly throttle are built into a piece of a steel
post used to support chainlink fences.  It just fits over the air
inlet tubing.  (No LPG cylinder was used.)
The large stove has too much power for some cooking tasks, and cannot
be turned down, like with an electric or natural gas stove.  Selecting
the fuel, and either throttling input air, or adding a computer fan
blower is my procedure.  Removing and alternating pots is one
solution.  Selecting a different (smaller) stove is another choice.
Almost all of the TLUD stoves have holes in the grate that are way too
large.  The holes in this grate were much too large, and I have since
replaced it.  http://i.imgur.com/zxunKv3.jpg
Here is a photo of my burned out Reed Woodgas Campstove from 5 years
ago:  http://i.imgur.com/Yuk3t5Z.jpg
Notice the small number of holes on the lower edge of the burn pot.  I
really liked that stove, but it didn't last, but it did teach me about
the reality of needing to use a sacrificial liner.  (used stovepipe)
Here is a photo of the grate in my Quad Stove (Paul Anderson supplied
stove and design).  http://i.imgur.com/E6kvPUs.jpg
Notice the large air holes. The first version of the stove was
temperamental and needed constant attention (a hose or pipe to blow
air to re-ignite the char on top of the fuel).  It came as a flat pack
that was assembled using tabs pounded flat, which could allow air
leaks.  High temperature epoxy rubbed over all the tabs/holes helped
seal it up.  Also notice a better type of "throttle" for the primary
air.  Especially nice is the removable smoke burner top which gives
easy access to dump the char.  It doesn't produce much char, though,
because of the large air holes.  I do use a replaceable stove pipe
liner to extend it's life.
https://www.youtube.com/watch?v=8OTWIN1bWps
I do need to add fuel to the Quad most of the time, but it is easy to
lay wood on the top edges of the smoke burner, and when they are
really hot, push them one at a time onto the char bed.
Well, guess I've rambled on and on...


-- 
Ray  Menke