[Stoves] Wood-fired masonry heaters - training

[alex english]

Andrew,
Norbert Snef, who used to read this list, is the guy to answer your
question. I would just point out that he and others involved took a
technical approach. All ideas had to be tested and produce data that proved
the improvement was valid. From what I understood few did. However  I seem
to recall that this approach did generate an evolution of the designs that
had lowest emissions, over what must be close to three decades of testing.

One of the tricks was to flatten the start up burn rate with careful
 attention to air flow.  No surprise, but needed proof.

What I haven't seen, and may be one of their problem in the trade is the
quantification of standby (no fire) losses.

Already said to much:)
Alex




On Aug 20, 2017 8:39 AM, "Andrew Heggie" <aj.heggie at gmail.com> wrote:

On 20 August 2017 at 05:31, Crispin Pemberton-Pigott
<crispinpigott at outlook.com> wrote:

> They are developing clean-burning wood-fired home heating and baking
systems operating on the retained heat principle. They have emissions per
kg or MMBtu well below current EPA targets. There is a lot to be learned
from them about this application of bioenergy.


Crispin are the reasons for the lower emissions  explained by the fact
the burn  in masonry heaters is hot and fast with low excess air or is
there more to it?

Andrew

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