Hackney Permaculture


Smoke-free wood stove
February 21, 2009, 10:04 pm
Filed under: Learning, Thinking | Tags: , , , , , , ,

A quick jaunt up north to Enfield on the train from Hackney Downs and we are in Gunpowder Park at The Energy Cafe for a workshop on pedal power. Andrew was also about and demonstrating his smoke-free wood stove which impressed me muchly.

Hooking up a fan to feed the flames more air increases the efficiency of the combustion and decreases the amount of smoke, which is essentially unburnt hydrocarbons or very small bits of wood to you and me.

Andrew demonstrates his design for a smoke-free wood stove

Andrew demonstrates his design for a smoke-free wood stove

All of the stove had been made from reused parts found in local skips. The main body was an old flue buried into a tyre filled with soil, the fan was from an old laptop. As the flue was already double walled it provided excellent insulation so the wood could burn at a higher temperature. The fan created a vortex in the main chamber which meant better mixing of air again leading to a higher burn temperature resulting in no smoke at all and 5kW of heat apparently!

A top view of the smoke-free wood stove showing the fan induced vortex

A top view of the smoke-free wood stove showing the fan induced vortex

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Roots, making a riddle, pruning etc
November 23, 2008, 10:00 pm
Filed under: Doing | Tags: , , , , , , , ,

A huge day – we had eight people getting stuck in this week including the epic Dean ‘I like digging holes’ Firth and Angela ‘I live next door’ McSherry.

I started off by showing Dean a huge root which needed digging out and gave him the pick and a spade whilst I climbed up a nearby lime tree and began pruning branches overhanging another neighbours garden which had been causing some distress.

victory over the tree root

victory over the tree root

a spot of light pruning for me

a spot of light pruning for me

The Pogo crew arrived a little later and made a riddle, which is basically a massive garden sieve, out of a pallet and mesh. With it we got all of the rubble out of the rear bed which had obviously been used as a dumping ground by the builders when the roof was replaced many years ago…

making a garden riddle

making a garden riddle

Using our home-made garden riddle

Using our home-made garden riddle

Around this point I hit the wrong button on the camera, so I must apologies for everything being a little blurry from here on… Austen pruned the laurel tree which is apparently not a good thing to use in compost as it contains arsenic! We found this out just after we had spread all of the cuttings all over the main bed – doh! We had a go at burning some cuttings but that was aborted, and Dean and Ben got all alpha-male digging in the pallets to edge the raised beds at the rear.

Trying to burn things

Trying to burn things

Building the rear beds

Building the rear beds

Austen up the laurel tree

Austen up the laurel tree