Ok so I had a large UGLY ash log that had a few knots in it, I don't have a power splitter so I let it dry out back for 5 years. Just put it in the stove for a long burn , Its been in there for 1.5 hours and I don't think Ill have to re-load any more tonight. Its rocking house is 72 and the stoves at 400
For sure one of the benefits of ash. Glad you have it but it is still hard to call them ugly when they burn like that.
If that had been oak, it would still be soaking wet in my area. Glad you finally got to put it to good use.
Just from observation the knots seem to burn longer. Where branches come together, the fibers are more dense so more BTU's. Another reason we don't waste the uglies but gladly burn 'em in the stove.
Interesting. My wood is very dense: I am on about an inch of limestone based top soil. My trees grow very slowly and the wood is dense. When I suggested about a year ago that I might getter higher BTU from this very dense wood, explaining my relatively low cordage use, I was poo-poohed, told all wood of the same variety had the same BTU per volume. Didn't believe that then, don't now. I suspect mine has both more wood and less water per square foot, leading to quicker drying and more BTU's per volume. It is not at all unusual for a 10 - 12 inch diameter tree here to be over a hundred years old.