Posts Tagged ‘wood burning stove’

A wood-burning masonry cookstove

Saturday, April 26th, 2014

Ach! Where does the time go? I’m so hopelessly behind with blog posts and there are now so many pending I scarcely know where to start. I just checked the last post I made about the outdoor kitchen for the wee house and it was a year ago!

Alongside the cob bread/pizza oven I built last spring (and which is now producing fabulous food), I also constructed a wood-burning masonry cookstove. I found an open source Sketchup model online and adapted it for Portuguese fire brick dimensions.

Sketchup model for wood burning cook stove

This is the adapted model. Click on the image to download the Sketchup file and open in Sketchup (3D modelling software which is free to download). Firebricks are colour-coded for different lengths. You’ll need to be reasonably proficient with an angle grinder (at the least) to build this stove.

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On rocket stoves …

Wednesday, February 6th, 2013

It seems rocket stoves are as much part of the natural building vernacular as glass bottles in cob walls: de rigeur for any self-respecting stomper-of-mud, stacker-of-straw and fashioner-of-eccentric-curves. Being innately somewhat contrary and suspicious of fads and fashions, even ones I’m participating in, this fact alone would usually send me running in the opposite direction. But reading about rocket stoves, I was attracted by their low tech simplicity, their apparent ease of construction, how they lend themselves to self-build projects, how they can be made from junk and be fueled with the small branches and sticks that are no more than kindling for more conventional wood-burning stoves, and how efficient a burn they can achieve. So they were penciled in firmly for the buildings here – for cooking and heating water – pretty much from the start.

But theory is one thing: practice another. With a big push on the main building planned for this year, it was time to start experimenting – constructing different configurations of firebricks and clay and stuff and firing it all up to see what works and what doesn’t.

Rocket stove core

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Instant oven

Tuesday, November 9th, 2010

One thing I’ve really missed since setting up home in the yurt has been an oven. We have a 30 year-old camping gas stove out of an old VW campervan with two burners and a grill, plus the wood burning stove to cook on, but no oven. No fresh home-made bread. No cookies. No roasts. No oven-baked vegetables. It’s been hard …

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All fired up again again

Friday, February 26th, 2010

With the stove working daily for almost two months now, it was obvious the flue was becoming obstructed with creosote deposits. When it got to the stage of smoking the yurt out every time we opened the stove door to add more wood, it was time to do something about it.

I also wanted to make a slight modification to my earlier modifications. (The upside-down flue pipe has been working perfectly. No leakage of creosote or smoke.)

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All fired up again

Monday, December 28th, 2009

Yesterday I went back and fitted the stove all over again. I wasn’t happy with the way the flue was installed, even though it was fitted the way it was designed to be.

The single skin stainless steel flue pipes, fittings and caps (chapéu) on sale here aren’t the most ideal flues from the point of view of efficient stove operation as the thin metal leads to rapid cooling of the combustion gases, causing condensation of water vapour and creosote accumulation at an accelerated rate. I’d already swapped my initial choice of 130mm pipe for 110mm before installation to increase draw and flue temperatures, but the nature of the pipe is such that 20mm diameter probably doesn’t make a massive amount of difference. (Though what do I know? I’m not a heating engineer.)

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All fired up

Friday, December 25th, 2009

Christmas Eve. Seems a good time to get the stove finally in and working. I’d forgotten just how good this little stove is, and it draws to perfection with 3 lengths of 110mm flue pipe. At this rate I should have the yurt warm and dry and fit to move into within a reasonable time. Always providing I can source the firewood …

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Stove ready

Thursday, December 17th, 2009

It’s been raining, so work is inevitably progressing at a slower pace than I’d like given the urgency in getting the yurt dried out. A couple of days’ work now has the stove stripped down, rust removed, corroded and sheared bolts replaced, and reassembled and tested.

L Lange & Co wood burning stove

It goes! With no leaks.

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