Sting said:
http://www.fpl.fs.fed.us/documnts/techline/fuel-value-calculator.pdf
pellets = 6800 btu per pound
corn at 15% = 5607 per pound
If my math hasn't failed me again
These alleged "facts" get foot-balled all over the public internet for the benefit of the folks posting
Never said corn had more BTU's -- said it wasn't significantly different
17% may or may not be significant to you - what it means to me is corn has to be 20% cheaper than pellets to be competitive in my boiler fuel bin
And what ever is in the bin has to heat my house for 20% less than the NG boiler that I simply set and forget.
as for the drama of burning inside out or "pop-corning" I would like to see some documentation on that. Corn burns over a pool of molten starch.
Also I would like to hear more about your theory about the slower air flow that's necessary to burn corn. Isn't this the same as saying pellets take more combustion air - and they don't. They burn faster than corn with the same amount of combustion air.
I am not looking for a pi$$ing match here Mike-- just would like to see where you arrived at your facts. I am not a factory trained salesman like you.
ok , no i do not wish to get into an arguement with you in this , i consider corn to be a very good fuel to heat your home with (we build 2 multifuel models specifically engineered to burn corn as well as pellets, or switchgrass should you feel the urge.
corn BTU's are bantied about more than any other fuel source than ive ever seen (and ive been at this a long time) anywhere from 6K to *8K BUt per lb, pellets are rated at 8500 (give or take a few hundred btu per lb) ive yet to see a credible "actual" btu rating for corn at a certain moisture level (most corn stove manufaturers rate higher and supply links , while others show lower)
as for drama , the corn does not "pop" like "jiffy pop" it splits open, this happens when its heated enough to cause the casing to split open, corn is a natural "unedited" fuel other than drying which takes it out of its natural state, corn designed by nature is a grain which has a high degree of survivability in natural conditions to fire. the shucks (leaves outside of the grain itself) tend to ward off fire, the grain will grow a new plant even if dried out. its meant to survive a brush fire and propigate. to sucessfully burn corn one must realise that you have to defeat nature. a surface hot enough to cause the case to split open (not necessarily pop like jiffy pop where oil is added) but rend the skin to allow the more flammable inner parts of the kernal to burn is necessary to completely combust the kernal. a stirring rod is helpful with this as it gets red hot and cracks the corn for easier burning. the inner portion of the kernal while hard is not as dense as a pellet and with less density a quicker "per kernal" burn is realised. so remembering air balance to the fuel present is key to a clean burn , lower air volume is best comparitively to pellets for the cleanest burn. this also allows air heated by the fire to remain inside the unit longer to allow a more complete absorbtion into the heat exchangers of the unit, so less air is good. more airflow on the contrary does not allow heat to transfer into the integral portions of the burn pot and does not as readily "crack" the corn resulting in a more incomplete burn. i look at the coal bed in a corn stove to be similar to a "coke fire" or forge when air is not being pumped in , a bunch of lumps or bits (kernals) rather than an amorphous mass. lower speed air showing what pellet burners would call a "lazy" fire is a clean sustainable corn fire.
one thing is certain , different stove manufacturers have different theories, ous is to burn slow and stir , others want an intense flame, personally i think a fast intense flame wastes energy at the exchanger end , it doesnt need to happen that way.if i could show you it would make sense (should you ever find yourself coming to virginia , let me know , my door is open, be happy to have you consider it an open invitation (but i need to know ahead, pm me). dont get me wrong , i love to play with corn stoves (much more interesting than pellet) and we do sell stoves that are made to burn corn so bias would be towards more heat to sell units right?
be forwarned though , im not a salesman , i am the senior technician for ESW, ive never (nor will i ever) worked in sales, not my rice bowl, im a "dirty hands" type. i spend my summers sitting in front of one stove after another watching it burn , in winter i help folks who call in with questions. ive seen thousands of stoves burn in my time , will see thousands more, aint my first rodeo