[Stoves] Wood-fired masonry heaters - training

[tmiles at trmiles.com]

Alex,

 

That is a good characterization. MHA members have participated in a number of stoves projects, conferences and workshops. An MHA member attended a biochar workshop that we held in West Virginia last month.  

 

Tom

 

From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of alex english
Sent: Sunday, August 20, 2017 8:12 AM
To: Discussion of biomass cooking stoves <stoves at lists.bioenergylists.org>
Subject: Re: [Stoves] Wood-fired masonry heaters - training

 

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 <mailto:aj.heggie at gmail.com> > wrote:

On 20 August 2017 at 05:31, Crispin Pemberton-Pigott

<crispinpigott at outlook.com <mailto: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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