[Stoves] Whitfield Home & Garden Biochar Pellet Stove PDF

[Crispin P-P]

  Dear Alex

I like the idea of finding a use for fuel that doesn't burn well at all and
pyrolysing it to get a good quality burn.

I was discussing pellets v.s. corn with Arend Ten Hove from the Bay of
Quinte area yesterday and it seems corn is or was cheaper than wood.
Something like $110 per ton delivered. Is that still true?

Given your need for potting / growth material would you be able to justify
not burning carbon you paid to have delivered?

Can you see any break-even prospect?

Thanks
Crispin


Hi Crispin and Jock,
Interesting to see these new devices take shape.
I have seen prices for high percentage grass or oat pellets (mixed with
10-20% wheat shorts) and pure oat hull pellets in the 135-150$/tonne range,
in bulk. I think the moisture might typically be higher than wood pellets,
or at least more variable than premium wood pellets, and of course 5-10
times the ash. Some of these have left significant deposits on boiler heat
exchangers, could/should be better with pyrolysis, but I guess that's what
beta testing is for :)

Alex




On 13/09/2012 4:28 PM, Crispin Pemberton-Pigott wrote:

  Dear Jock



I am interested to know how the economics of the pellet stoves that produce
a char byproduct compare economically with natural gas. It is noted in the
article that the sales of pellet stoves have fallen off largely because of
cheaper natural gas, a situation which may change soon.



If NG is the fuel of economic choice, I am wondering how the economics look
for biomass pellets (burned whole) and for biomass which does not burn all
the available carbon (which contains about 2/3 of the energy in the pellet
when loaded).



If about ½ the carbon is remaining as char (yielding 25% char) there is a
33% fuel cost penalty for the same amount of energy.



It sounds as if you may have the numbers to go with these solutions. If it
looks good, then people using the char like greenhouses may find the grass
pellet option attractive (as is the case in Ontario at the moment for
switchgrass pellets).



Thanks
Crispin





+++++++



Bob et al:



I hope you will find this of interest.  Please feel free to share.



I look forward to hearing from you.



Regards,



Jock


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