Walker Riser-less core

[independentenergy]

I'll try not to look so much in Italy will never find

[drooster]

So you bought it full price? What's the standard size and how much costeth it?
Do you expect similar performance as IFB or different in some aspect?

Edit: Oh, my questions cannot be answered as this is a photo of your commercial product, never mind then.

walkerstoves.com/super-hot-shippable-cores.html

[matthewwalker]

You'll have to do your own materials source work, it's going to vary greatly depending on where you are and how good you are at sourcing.

It's a bit more insulating than the brick, but performance is pretty close.

[drooster]

Using ceramic fibre board you could theoretically reduce the size of the whole stove, yes?
(It doesn't have the supporting strength of brick though...)

[matthewwalker]

[Ralf]

Hi Matt,

thanks for that interesting video. Just for my understanding, is the 45 angled ceramic fibre sheet that forms the "walker tube" at the left of the firebox with the slot visible towards the middle ?
And the mixing zone around the back corner to the right ?

This also perfectly explains why the firebox on these should be well insulated.

I like your "zero CO" goal, if I had built a batch box I wouldn´t settle for anything less.

Cheers,
Ralf

[matthewwalker]

Hi Ralf, you have the air path correct. I still prefer the regular metal tube, it has a lot of useful functions, but this works as well. Requires more care from the operator though.

[patamos]

Nice one Matt

Ya, there is much to be said for the steady long term glow of the fire…

You've also given me clarity on the excess air debate. CO numbers being the tell all…

Thanks man

[matthewwalker]

I hope I was clear there, I didn't mean to imply that I didn't care about efficiency, nor did I mean to discount how difficult it is to get the kind of stability at low excess air that Peter does. It's damn difficult, because you get the low air by making the stove take a giant hit of fuel and be able to keep swallowing. I choose to give a little eff in the trade off for stability in a broad spectrum of conditions. Whether it's fuel or draft or different settings for cooking, there are quite a few variables in my burn from day to day. And I like to have a fire. I mean, I really like to have a fire.

So, yeah, I have poor excess air numbers due to leaks, but I want to be clear here. Running the way I do, kinda shut down, my "real" excess air numbers are going to be way higher than Peter's, and efficiency lower. But it's not much, and we don't know how much because our test meters are apparently different in the way they calculate those things. Anyway, what I'm trying to say here is, I know from the Testo that this core performs, on average and for me in normal daily use, better than any other I've run, by every measure whether it's CO or eff or just plain function. If you have a big, high mass, masonry heater like Peter, or Alex H, then the highest efficiency will be realized by a single, super hot burn exactly as the PvdB Batch Box is intended to run.

Man, I think I probably just made it more confusing. Peter, this little monologue is mostly for you. How'd I do?

[peterberg]

Not bad, not bad. Your approach is tailored to a different use of the combustion core. But it works for you, and I can imagine there are lots of other people who'd like to have fires all day long. And you have access to plenty of fuel.

But I don't, because processing firewood is definitely work and in my part of the world it'll cost money to get the stuff. Let alone that I am coming to age and want to hold on to life a good 20 years more if I can help it. One of the reasons why we moved to a super insulated house and burned 0.6 cord last winter to heat 1920 sq. ft. of inhabitable space.

Different situation asks for different approach. Still very interesting to see what other people do with a relatively simple concept, pluralism is a good thing in my view. Now and then I pick up a good idea myself and try to work it out into a design which is easily copied. It is most rewarding to see a short video from Argentina where at the end my name is mentioned. The pronunciation is all wrong but I am very flattered.
Short video, Spanish text.

[matthewwalker]

Thank you Peter, I appreciate hearing your thoughts. Great little video, you should be flattered, and proud. Good stuff my friend.

[matthewwalker]

peterberg said:

want to hold on to life a good 20 years more

Peter, do you do any strength training? Building muscle? I would like to share a video with you, because I'd really like to have you around for another 40, let alone 20.

youtu.be/jeFdYy815pQ

I'll bring an extra pair of rings next time we meet!

[drooster]

Well this thread took a left turn!

[matthewwalker]

Ha! I trust Peter knows me well enough to know I'm just excited to have learned something new myself and share it with my friend. He's more fit than I am, by a fair bit, judging by work done when we get together. I just learned about this stuff at a super late stage and am excited about progress, always.

[peterberg]

Nov 18, 2016 5:56:32 GMT -8 matthewwalker said:

peterberg said:

want to hold on to life a good 20 years more

Peter, do you do any strength training? Building muscle? I would like to share a video with you, because I'd really like to have you around for another 40, let alone 20.

Matt, you are joking I think? I am 70 years old now and my goal is to reach 90. That's ten years more than my father and two years more than my mother. Most of my moving around is by bicycle and I walk an hour before breakfast 9 out of 10 days. Plenty training I would guess, for me anyway...