This can be a terrible idea if more people catch on to it, but I don't think it will. Sure wood is a renewable resource, just like oil, coal and
natural gas. What was stated in the OP is propoganda, making wood out to seem as if it is the 'only' renewable reasource.
And it is only renewable so long as the tree growth to maturity is as high as the consumption rate. If that rate dips, there won't be any trees left.
Trees are already used in timber, paper, etc. Adding another billion dollar business to the pile can only be bad.
Yes wood is a renewable source that could run out if overused but unlike oil we have the ability to re engineer trees which we have allready done in
some cases. For example i have some hybrid poplar trees on my property that can grow more then 10 feet in a year. ( yes i said that correctly ) these
poplars have been selectivly bred in order to achieve this astronomical growth rate. If the demand for wood increased beleive me there would be more
selective breeding programs to meet the needs. Its concievable that trees could be bred to burn more enviromentaly friendly since a tree in escence
is mother natures version of a solar cell.
Additionally wood burning is not the answer to everyone, heating and cooling setups need to be determined by your geographical area and your needs.
For instance electric heat pumps function cheaply and efficently as long as the temp out side is above freezing , once it dips below freezing there is
no heat for them to extract therfore they are useless. If you live in an area that the temp rarely ever gets below freezing a heat pump would be
great. If you live in an area that the temp drops below freezing for a week or so during the year then a duel fuel heat pump would be good ,( duel
fuel heat pumps use gas or electricty to heat coils if the temp drops below freezing so the pump can still function ) or you could use a heat pump and
a wood stove and just use the stove on those real cold spells . If you live in an area where it drops below frezing for a long time then a wood boiler
is great , you can heat multiple buildings and there a generally sized large enough you only have to fill them once a day with firewood. The key to
the solution is there is no one correct solution there are multiple depending on your geographic location , plus people have a tendancy to have only
one heat source and thats a problem, duel fuel setups should be a must.
Sri Oracle not knowing where you live i dont think anyone can give you a definate answer on why your stove says that however if you are in the US then
it may be a case of miss wording. There are federal regulations on wood stoves and restrictions on them that i guess are in esscence laws but i dont
think the stove police are going to bust you. Anyway does your stove have a catalytic system on it? if it does then leaving the door to the ash pan
open would mess with its proper function,becuase the fire ends up with more air and burns faster with the door open.
As far as your setup is concened i know alot of people using similiar designs and i think they even make an addon aftermarket device like what you
have made. In my situation this setup wouldnt work becuase im gone a good precentage of the day and i dont want a fire burning when im not there.
resistance, you can find used outdoor boilers just check with a dealer because people trade them in on larger models or newer models with more
options. The ones that are all rusted out are poorly made if you ask me, if they are going to use a metal other then stainless steel then they need to
have the system be a closed system that doesnt allow any air into it to prevent rust and corrosion. If you want and you have a welder or accsess to
one you can make your own like i did. Or you could do a similiar setup like oracle did ,here is an extremely low tech and easy boiler , first find a
55 gallon drum then buy a cheap barrel stove kit , wrap the barrell in 3/4 inch ( or larger if you can find it) copper tubing , the more wraps the
better then run the outlet side of the tubing to an old water heater ( the water heater doesnt need to function it just needs to hold water ) Wrap
both the water heater and the wood stove in insullation ( non flamable of course ) Then add a pump to the setup to pump the water from around the
stove to the old water heater and then from the water heater to whatever you use as you heat coil in your house.
The reason for the old water heater is with this style setup you would need more water then just what is in the coils around the stove plus the
water heater should allready have a safety valve to relieve the pressure if the water got to a boiling point versus exploding. To regulate the fire
you can just add a mechanical damper with a thermostat and you got yourself an instant cheap water stove.