Hello, I own the anthracite coal Forum mentioned in this thread. I'll try and answer some questions.
kilarney said:
5) No auto ignitor. During the cold months, this is no big deal. However, during the shoulder seasons, this could be a real pain.
6) It is messier. I haven't looked into this too much, but that's what I'm told. But is wet rice coal really that messy?
They do have an auto igniter. Leisure Line began offering it as an option on their stokers just recently. Having said that you generally light coal once and let it burn for the entire season. As far as the mess goes I have no comparison personally but from the posts on my forum it's my understanding that its not much more of mess than pellets. Guess it really depends mostly on the person. The dust either comes from moving the coal or the ashes. The coal can be wet so you can dampen it lightly before moving it. You just have to be careful with the ashes. That does bring up one other point, coal can be stored anywhere, even outside exposed if necessary.
Moe said:
It's my understanding from reading posts on anthracite forums that stoker stoves don't have to be cleaned af often as pellet stoves. Is there anyone here who has burned anthracite who may be able to answer this question? I have two pellet stoves but have considered trying anthracite because of the higher BTUs/ton. I also understand that anthracite stoker stoves can run longer on a load of anthracite than a pellet stove. Can anyone confirm this?
Moe
The only thing that really needs to be cleaned is the fly ash out of the flue pipe. There is other maintenance but its minimal. This fly ash will eventually block it. How often you need to do this depends on the model, the coal etc. We have a full boiler that runs year round and we do it once a year but could probably go for a couple years. Other smaller stokers may need attention every two or three months.
How long they can run depends again. Typically a few days for most models but I had one customer from when I used to deliver coal that had it set up for good week or two. Ours is fed by a 55 gallon drum and auger, the limiting factor for us is the amount of ashes it can hold. Typically during the coldest days of the year when it gets down around zero you''ll need to take the ashes out once a day and go through about half a drum of coal but that's for 4000 sq. ft. house. At this time of the year about once a week and the tub isn't really full.
Webmaster said:
Another pro/con is that most batch fed coal stoves do not rely on electric - pellets stoves will 100% not work in power failures, etc.
The most popular models now are stokers which do rely on electricity. They are not much different than a pellet stove. Most models will go out in very short time but the larger boilers will stay lit for many hours without electricity. However if power outages are concern where you live they have hand-fired models that are similar to a wood stove.
buckeyeboerboels said:
I have priced some coal stoves and they are cheaper than a pellet and the coal is a little more expensive then pellets per ton, but provide more heat. I'm having trouble finding a dealer that sells coal inserts to compare to a pellet insert. i'm concerned if the coal requires more maintenance, more up-keep, burn out quickly, etc... and can a coal insert be a primary source of heat?
1 ton of anthracite is approximately 1.5 ton of pellets. If the pellets cost $200 the coal would have to be less than $300 to compete. There's an excellent fuel calculator here from the DOE in an excel spreadsheet. If you don't have MS excel you can download and install Open Office for free to work with it.
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I don't know about specific longevity for different products but generally if you buy a coal stove from one of the established manufacturers you're buying something that you will have for a very long time. 2 or even 3 decades. Once you get into the boilers you're making a lifetime purchase. Our boiler has been running 24/7/365 for the the last 25 years and its not going anywhere soon. A similar unit made by EFM which is a much older company has had some boilers go 50 years and then they only need some refurbishing. All the established manufacturers have very long lasting products.
Maintenance again depends on the model, ours takes about 2 or 3 hours each year mostly cleaning out the flue pipe.
The boilers mentioned are most certainly primary heat.
slls said:
I have burned 5 ton of coal in a coal stove. Any one that has burned coal in a stove know it is not easy, almost a science. It will heat a long time, then you have to deal with large clinkers.
I wouldn't call it a science but there is a learning curve especially for the hand fired units. If you're getting clinkers it's the coal itself, what you have is a coal with a lot of impurities in it which tend to fuse together. Good coal will burn to almost powder especially in a hand fired stove.
slls said:
It is bad stuff, not the kind you spread around the garden. I believe mercury, lead , arsenic and who knows what else.
The ash is actually used by old timers in gardens. Whether it does anything is debatable. It's mostly silica and inert. The toxic metals and other toxins are elevated slightly above dirt from my understanding. It can be used as clean fill.
maz said:
Has anyone ever tried to burn coal pellets in a wood pellet stove. What if you mixed let say 10-20% coal in a pellet burning stove. what would happen.
If you get it to burn take a long hard look at it because it will be the last time it will burn anything. LOL....
If you want to burn coal you need a coal stove/stoker. We have a saying on our forum. You can burn wood in a coal stove but you can't burn coal in a wood stove. The designs for wood stoves are different. For the hand fired stoves coal needs a deep bed with horizontal sides. when you fill a coal stove you fill it up all the way... You control the burn through the draft.