Hi ladies and gentlemen
Just came across this forum
I have been using a wood gasifying biler for the last couple of munths just thught i would share my experience it might give you some ideays
Most of what you see i learnt from forums like this so hope it helps
hope this works
The Johnson Control Digital Thermostat 80$; has arrived
something similar here would have cost a lot more; I have installed it’ and it has enabled me, to be much more accurate, in how I control the buffer tank and the oil boiler .￼
I will post some pictures along with some explanation, as to how I ended up with a wood gasifying boiler,
The first image’ is of my existing 90000 btu oil boiler’ I installed in 1998, the last fill of kerosene cost 78 cents a litre; that was back in April. I recon the cost of heating my home 2500sq feet; for the winter, would be anywhere between’ 2000 Euro 3000 thousand Euro’ depending on the type of weather we would have .
I initially was looking at a wood burning stove; that I could install into; an existing fire place’ and after looking at a large number of stoves .I almost settled on a Hercules wood burning stove’ with a back boiler’ that I could combine, with the existing oil central heating system, the average price in this country’ was around 3000 Euro; that was just for the stove’ removing the existing fireplace’ and installing the wood stove. combining it to the heating system; would have cost another 1500 to 2000 thousand Euro, I recon; and that’s with me doing the installation .
Searching the web; I came across sites and forums; that got me interested in wood gasifying boilers.
Trying to source a wood gasifying boiler; in this country, the cheapest wood gasifying boiler; I could come across; was costing in the region of, 4000 and 5000 thousand Euro; with the addition of a buffer tank; the cost had risen to about 8000 or 9000 thousand Euro http://www.woodenergy.ie/iopen24/pub/ccn08_gasifier.pdf
wood energy gives an estimated cost of 16000 thousand Euro
These cost’ were I felt was way to expensive, and would be well beyond my reach; plus the fact that it would take long time’ before I would have recouped the cost; decades even
So I set about trying to reduce the cost to a minimum; using recycled material; and some hard work.
So that is how I ended up here; with a wood gasifying boiler, and the prospect of using no oil, or very little for heating and hot water .
This is the wood boiler 85300 BTU; about twice the size’ of the existing oil boiler’ in size, not heat output
This boiler I got in Poland; along with a laddomat; and some other fittings; for 3330 Euro delivered here;
system zone and minilex; I used to simplify the wiring and zone heating . I could have got it cheaper; if I were living, in an other country, but we live in the rip off republic; so I had to purchase them here.
While I am not happy with the cost; I am happy with there performance; it did make it easier to combine all the zones
Buffer tank; is made with 4x2 timber and 8x4 sheets of ply; insulation industrial type; again all salvaged .
The only thing I had to pay for was the EDPM lining ￼
Here’s a picture of the 2000l tank; with the lining, and the pipe work, from the wood boiler, and the flow and return for the heating system; the automatic air vent, I removed as it was allowing air into the wood boiler .
The boiler’ and the laddomat connected; the laddomat’ I feel is an essential addition; to the system, and makes the boiler’ more efficient; I am very pleased with this item’ 200 Euro cheaper to get in Poland than here
Dual coil copper cylinder; reclaimed from scrap yard; used to stratify the buffer tank; and as a heat exchanger, for the heating system.
The 1” connection, normally the hot water outlet; I connected to the boiler; hot water from the boiler enters the tank’ and comes out; the thru the holes drilled into the tank on top; also true the connection where the emersion heater would have been. This keeps the hot water on top of the tank’ while it is charging, I have two censers, bought of EBay; one about six inches below the water line; and another, six inches above the bottom; of the tank, while charging’ there seems to be about a 15 degree difference; maintained’ when charged’ there seems to be a difference of 20 degrees . So stratification’ seems to be taking place; and maintained, while heat is being drawn off for the heating system . I recon there’s about thirty or forty feet; of 1” copper coil inside the tank; this I have used as the heat exchanger; I combined the two coils; and have the flow and return; connected to for the heating system; this seems to be working’ and I don’t think I will be changing anything here.
The tank’ is held in place by two galvanised bars; the serve two purposes; one to keep the cylinder’ just below the surface of the water; and two; to hold the tank together strengthening the top of the tank .
The bull wire; is slipped inside garden hose; to help prevent galvanic corrosion
6” insulated flu don’t know the price for this yet; my son and son-in-law; fitted this’ could cost a few hundred Euro, or a few pints. I will have to pay for the material.
But the labour