what wood stove out there have the longest burn time?? I'm thinking of replacing the one I have it just wasn't made for heating a house a long time. BRRRRRRR
I love your numbers.....To heat a house..Many different things come into play. It is called "heat loss" A structure is going to lose a certain amount of heat due to windows,doors and lack of insulation.So to heat a house you have to provide heat plus enough extra to account for the heat lost.
Many old homes require 100,000 btus per hour to heat.Ok in a pound of firewood there is roughly 6500 btus. It will take around 16 pounds of wood consumed to heat the house.Now to take in consideration inefficient woodstove. Maybe as low as 60-80% Meaning 40-20% of the heat went straight out the chimney.
So it is like Cabin fever says.. Long burn times are not what every home needs.
Someone mention 90 pounds of Oak lasting for 40 hours. well it produced 585,000 btus.. Not even considering what went up the flue. So in 40 hours it basically produced enough heat to heat most old farmhouses for about 6-8 hours. So at that 40 hour burn time.. Homeowner was likely cold.And the flue likely got a pretty good coating of creosote to boot..Seasoned wood will make creosote when smoldered over a long period of time.
I would recommend looking for an airtight stove,Still in production today,With as large of firebox as possible.
Oh and on cold nights. set your alarm clock for midway through the night.Wake up and go feed the Magic box, As it has magically made all the wood you put in it earlier disappear.
I love your numbers.....
But you are double discounting the efficiency.
Wood has 8000 BTU's per pound. 100,000 thousand btu's per hour is absolutely mind blowing heat.
The numbers are just an example of how I see it working.. Maybe I am wrong.Wait, I can't be wrong, no one is wrong on the internet. LOL
Actually wood btus per hour run from 6500- 8000, all depending on whose numbers you believe,
You say 100k heat is mind blowing. Many homes have forced air gas/fuel oil furnaces that go way above 100k.
Around here here 125k and 150 are pretty common sizes.
My firebox will hold for 12 hours. But I also put a full wheel barrel load of dry seasoned hardwood in it too.But I am using one of the most inefficient forms of heating a house. an outdoor boiler.But I cut my own wood, have more than enough handy.And the mess is outside. I have thin blood so I like to keep the house warm..Heck my garage is 70.