RenewableCandy wrote:What do The Panel reckon to this?
The method is simplicity itself: do exactly the opposite of the tipi method.
1) Put the largest logs at the bottom, ensuring there is no space at all between them.
2) Put a second layer of smaller logs on top of the largest, again ensuring there are no spaces between them.
3) Repeat until you get to the top, where you will have strips of crumpled paper and — at the very top — 3-5
...and I'm not sure what those things are or what they're made of.
Neither am I but, if they're similar to Zip firelighters, they involve fossil fuels which are not particularly pleasant at all. These are a preferable alternative if you must use firelighters. They shouldn't really be necessary.
He mentions that there's little ash at the end of burning; this could be very efficient burning or some goes up the chimney due to the fireplace design. Our woodstove only gets emptied of ash every couple of weeks, and I can tell very little ash gets taken up the chimney.
I experience pleasure and pains, and pursue goals in service of them, so I cannot reasonably deny the right of other sentient agents to do the same - Steven Pinker
Ideally, when burning wood or coal, the fresh fuel should be placed UNDERNEATH the already burning fuel, in order that that smoke and gases from the not yet properly burning fuel are passed through the hottest part of the fire and fully burnt.
This is of course not practical with any standard type of stove or fireplace, the Victorians knew this and designed various complex contraptions that claimed to insert the fresh fuel under the already burning fire and thereby "ensure perfect combustion and the absence of smoke" Such devices worked to an extent under ideal conditions but never found much favour due to the mechanical complications.
When initialy lighting the fire in a stove there is much to be said for covering the grate in fuel, and lighting the fire from the top as described above. This gives better and cleaner combustion and also extends the time until the first refueling.
"Installers and owners of emergency diesels must assume that they will have to run for a week or more"
Clean burning wood stoves like the Dunsley Yorkshire are DEFRA approved for use in smoke control areas through the use of down-burning. A bed of hot coals forms at the bottom rear of the firebox where the flue is, smoke from newly added wood is drawn through this bed of coals where it is heated, then a secondary air intake at the back of the stove allows a second combustion of this smokey mix. Once the stove is up to temperature there is no visible smoke at all. I had the boiler model, the water jackets surrounded the secondary combustion chamber very well and it was efficient.
The only downside was that it was a little more difficult to light than a conventional stove, because you have to start the fire at the bottom rear in order to get a draught going in the chimney but once it was lit I could put any sized log on it without problems.
Tarrel wrote:Had our first chimney fire yesterday!
Burning wood too slowly
Yes, and it's not properly seasoned. Will be better next winter. Also, we bank the Rayburn down overnight, which probably doesn't help.
To be honest, the chimney is a bit overdue for sweeping. With a Rayburn they recommend around 3 times a year. We're shutting ours down for the summer in a week or so. We'll have it done then, ready for a September re-light, and then again after Christmas.
If you are running on wood, it will be impossible to make the Rayburn run for more than a few hours without adding more fuel. Treat chimney fires as dangerous. They often do for houses if they start at the wrong time.
Smoke up the chimney is not an issue with me as I'm out in the country. For efficient and long burning fires in the furnace I take advantage of the three foot depth of the fire box by pushing the burning wood and coals to the rear where there are no draft holes from below before recharging the front with close stacked wood over the grates with few if any coals under it. This forces the fire to back burn against the draft to start the new wood and the wood gas and smoke from the new wood passes over and through the coals and fire between it and the exit flue. This yields a lull in the heat output followed by a charge of heat in the middle of the night while we are sleeping and the outside temp is dropping to it's morning low. Low tech but it works.
This is a old locally built wood furnace that has a 47"x47" footprint in the basement and an 8" flue. It has twin smoke chambers above the fire box and cold air returns enter the sheet metal sides by gravity and move to the inside up the fire box and around the smoke chamber then out through a center top duct and on to the upstairs living area. http://drc.denison.edu/bitstream/handle ... sequence=1
We have a stove that works along similar principles to the Yorkshire, and yes there's no visible smoke once it gets going. But there's some at startup, so I'm tempted to give the upside-down method a go now that a quick fire-up isn't quite so urgent (i.e. it's not February, unlike last week!).
I keep thinking that's what would happen with our stove, too. Perhaps it's because the stove itself already directs the smoke through the fire (a la Dunsley Yorkshire above).
Tarrel wrote:Had our first chimney fire yesterday!
Burning wood too slowly
Yes, and it's not properly seasoned. Will be better next winter. Also, we bank the Rayburn down overnight, which probably doesn't help.
To be honest, the chimney is a bit overdue for sweeping. With a Rayburn they recommend around 3 times a year. We're shutting ours down for the summer in a week or so. We'll have it done then, ready for a September re-light, and then again after Christmas.
We bought a professional sweeping set for about £120 (from http://www.thewakefieldbrush.com ), and do our stove every 6 weeks or so over the winter, then pay a sweep to come once a year so we get the certificate. It's having boilers in the stove that does it - it burns much cooler, so you get more soot - after 6 weeks, there's a good pile in there, even burning 2-year old wood!
Smoke up the chimney is not an issue with me as I'm out in the country. For efficient and long burning fires in the furnace I take advantage of the three foot depth of the fire box by pushing the burning wood and coals to the rear where there are no draft holes from below before recharging the front with close stacked wood over the grates with few if any coals under it. This forces the fire to back burn against the draft to start the new wood and the wood gas and smoke from the new wood passes over and through the coals and fire between it and the exit flue. This yields a lull in the heat output followed by a charge of heat in the middle of the night while we are sleeping and the outside temp is dropping to it's morning low. Low tech but it works.