[Stoves] Collaborative Stove Design Workshop
Kevin
kchisholm at ca.inter.net
Wed May 21 15:31:26 CDT 2014
Dear Jock et al
Consider the concept where the Earth is divided into two Zones:
1: The "Biosphere Zone", where plant and animal life exists, and which includes the elements and compounds necessary for sustenance of their lives and existence as living entities.
2: The "Non-Biosphere Zone", containing the elements and compounds that are not accessible by the life forms in the Biosphere.
Clearly, if no additional carbon is brought into the Biosphere, the carbon content of the Biosphere cannot increase. However, if coal or oil, or other forms of carbon, are brought into the Biosphere from the "Non-Biosphere", then the carbon content of the Biosphere will be increased. Similarly, if wood from the Biosphere, containing carbon is burned, there is no net addition of carbon to the Biosphere.
The problem with increased CO2 in the Atmosphere fraction of the Biosphere is not combustion, but rather, the problem is the source of the carbon combusted. If the carbon was sourced from the Biosphere, there is no net addition of C to the Biosphere, although there would be a transitory dislocation of carbon from one region of the Biosphere to another.
(See also comments below)
----- Original Message -----
From: Jock Gill
To: Discussion of biomass cooking stoves
Cc: John Ackerly
Sent: Wednesday, May 21, 2014 1:33 PM
Subject: Re: [Stoves] Collaborative Stove Design Workshop
Dean & John,
The simple fact is that no combustion device will ever remove carbon from the atmosphere. If a fundamental problem is that there is too much CO2 [carbon] in the atmosphere, then removing carbon from the atmosphere is an essential imperative.
# There would be no problem if only biomass was burned, and if the annual quantity burned was equal to, or less than, the "mean annual increment of biomass growth."
The most direct, simple and proven way to remove carbon from the atmosphere is the pyrolysis of biomass. Therefore, what we need are heating devices that are based on pyrolysis. Combustion is both old school and not an answer to the imperative of carbon removal.
# "Pyrolysis" is simply the destruction of biomass by heat. ALL stoves are "pyrolysis stoves." "Combustion" releases the energy contained within the pyrolysis gases. I think what you are intending to promote are "char making stoves". Note that "charcoal burners" do not add additional carbon to the biosphere.
For the record, Jerry Whitfield, who designed and manufactured the first working wood pellet stove in 1984, has now developed the designs for a pyrolytic parlor stove. Unfortunately, at this time, there is no market for the carbon [biochar] that such a stove would create. Until such time as the imperative of removing carbon from the atmosphere is recognized and valued, perhaps a significant carbon tax, there is no way to commercialize pyrolytic devices in general, much less for residential use. It may also be required that we reject the old industrial era model of extraction and exploitation and replace it with a model more early akin to regenerative stewardship, with an eye towards a future that could be vibrant, dynamic and abundant.
# There are two issues here:
1: Efficient, effective and safe stoves
2: Removing CO2 from the atmosphere.
#Given that the wood energy distribution is about 50% in the Char and 50% in teh pyrolysis gases, a person wanting an efficient, effective and safe stove would have to consume roughly twice as much fuel for the same stove effect. If the "Stove Owner" could exchange the char for an equal "energy content of new fuel", then he might go for it. The Fuel Seller" could then sell the charcoal to another person wanting charcoal fuel, OR, he could sell it to an Organization that wanted to "Remove CO2 fromm teh Atmosphere."
Best wishes,
Kevin
Thoughts?
Regards,
Jock
Jock Gill
P.O. Box 3
Peacham, VT 05862
google.com/+JockGill
:> Extract CO2 from the atmosphere! <:
Via iPad
On May 21, 2014, at 9:59 AM, Dean Still <deankstill at gmail.com> wrote:
Dear friends,
Renewable energy technology is developing quickly to mitigate global climate change. We don't have any time to lose if wood and pellet heating technology is going to compete amongst the renewable energy solutions.
Pellet stoves and then automated pellet boilers were a huge technological step forward. We believe a next step may be affordable, automated wood stoves to maximize the potential of the stove and minimize its inefficiencies.
That is why we are holding the Collaborative Stove Design Workshop at Brookhaven National Lab from Nov. 4 - 7. Building off the very successful Wood Stove Decathlon, we will test, assess and help improve up to 6 automated biomass heating stoves, who will be competing for a modest prize. Instead of a large event open to the public, this will be an intensive 4 days for 30 stove professionals to push the envelope of stove innovation.
Aprovecho is building a 'super-clean' biomass heating stove entry based on cooking stove technology that is more advanced than current heating stoves.
John Ackerly
Dean Still
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