[Stoves] Biomass Fired Appliance Characteristics, Features, Qualities, Attributes and or Considerations
Lanny Henson
lannych at bellsouth.net
Sun Apr 7 07:32:01 CDT 2013
Otto,
Thank you for your ideas.
It is just a raw list for now, not in any order, that would be difficult to make into a score card.
Not every point would apply to every cooker.
I did not include points for liquid fueled appliances only solid fuel.
You mentioned a point that I did not have, "chimney or no chimney", thanks. I added it to the bottom of the list below.
I could condense some of the points to shorten the list. I may be going in the wrong direction. I hoped to have a list of 50 points!
Like you said the stove has to appeal to the end user. That has to be high on a list of priorities.
Lanny
----- Original Message -----
From: Otto Formo
To: Stoves Bioenergylist
Sent: Sunday, April 07, 2013 4:02 AM
Subject: Re: [Stoves] Biomass Fired Appliance Characteristics, Features, Qualities, Attributes and or Considerations
Dear Lanny,
Iam happy to see this topic beeing brought into consideration, but your list is to "long", sorry.
How would you expect anyone to be able to compare two units related to 40 points?
First of all we could link the units to type of fuel and fuel available:
Biomass
- Solid
- Dry Wood (moisture content less than 20%), pellets (7%). briquettes (10%), charcoal etc
- Raw materials like straw, twigs, nutshells, etc.
- Liquid
- Ethanol etc.
Secondly:
With and without chimmny.
Thirdly:
Char- and none charmakeing units.
To shorten your list, but haveing in mind the same settings, we like to look at our ND Peko Pe, as an energy unit and linked to different tasks to be done, like cooking, grilling, oven etc.
This diffrent tasks of operation can be adjusted to the situation and incoporated with the unit as a focal point of action.
Just be Creative and see what Paal has done!
We would like to focus on the gasfier units and divide them into mainly two different categories:
Natural Draft and
Forced draft by a fan or Charmakeing and None charmakeing, which is very much how they operate.
The ND unit is very much dependent of dry fuel, while the FD can accept a bit more moisture content.
The forced draft unit consume the char, while the natural draft let us harvest the produced char - 20 to 25%.
Biochar can also be produced and harvested in many ways, but with lower carbon content, which "normaly" burns in an open fire, apart from the ones lit from the top (Top Lit), see Tom Reed.
According to your list, the most flexible unit will give the highest score, a Multi Use Unit.
I dont see the point to be the most Multi Use Unit, as long as the main focus should be the emmissions and the available (short distance) fuel in the region.
We feel this is a bit of a divertion of the main topic for stove operations, namely field testing of emmissions and efficiency.
We dont say that caracteristics, features etc. is of no interest, but the main issue should be to involve the cook and women going to use this applicants.
They are not only missing here in this forum, but also in most conferences related to this issue.
WHY??
Invite them and Iam quite sure they will have a lot of relevant questions and even good answers.
We are attending the Green Expo in Lusaka, Zambia to day, involving young entrepenurs and local people.
Otto
> Biomass Fired Appliance Characteristics, Features, Qualities, Attributes and
> or Considerations.
>
> 1. Type of cooking appliance and type of cooking task, like cooking
> with woks, pots, pans, griddles, ovens, and or grills.
>
> 2. Volume to be cooked- Is the stove sized to cook the right quantity,
> for individual, household, commercial, institutional, or industrial size.
>
> 3. Cost and payoff period, how much work will the stove do, how much
> fuel will it save, how much labor will it save.
>
> 4. Overall functionality, how well does the stove do the job?
>
> 5. Durability and ruggedness, longevity, will it last? will it burn
> out? or will it break, what is the lifespan.
>
> 6. Ease of use, How easy is it to fire the stove up from cold start,
> what is the skill level necessary to operate, and the attention period
> necessary to keep it going.
>
> 7. User appeal, pride of ownership, does the appliance look good, have
> the wow factor? Does the stove make you say yes!
>
> 8. Safety, does it burn people, children, or tip over, bump spill,
> smoke, set walls, floor, ceiling or woods on fire.
>
> 9. Fuel efficiency, cost to operate, and cost to fire up the stove.
> Cost of fuel in area to be used.
>
> 10. Fuel type and fuel flexibility, does it burn raw wood? What size? or
> processed wood like pellets, briquettes, how about grass/straw faggots or
> bundles? Doe's it burn charcoal or dung?
>
> 11. Time to fire up the stove from a cold start.
>
> 12. The ease to which you can fire the stove up from a cold start.
>
> 13. Time needed to operate the stove continuously, Fire and forget or need
> constant attention,
>
> 14. Skills level needed to use the stove.
>
> 15. Learning curve, or how difficult is it to learn the skills to operate
> the stove.
>
> 16. Attention Period to maintain, how often to check stove for the initial
> batch burn, if one, and then for extended continuous cooking, like every 10
> mi, 20 mi or 30 mi.
>
> 17. The ability to add fuel to boost the heat or extend cooking time
> without creating smoke.
>
> 18. How forgiving of mistakes by unskilled, unmotivated cook, like adding
> too much fuel, or letting the fire go out.
>
> 19. Ability to recover from loss of flaming combustion, when burning wood,
> can you relight stove by increasing combustion air, or by adding more wood.
>
> 20. Consistency, does it cook the same way, and uses the same amount of
> fuel, every time, for the same cooking task? Is fuel use predictable?
>
> 21. How well does it functions in bad weather? Wind rain, storm?
>
> 22. Does it need electricity or gas (petroleum gas) to operate?
>
> 23. Cook space air pollution. Does it cause smoke or carbon monoxide in the
> cook space? Indoor or outdoor.
>
> 24. Cooking flexibility, how well does it cook different types of food in
> different volumes at different rates?
>
> 25. How long will it hold food safe, hot?
>
> 26. Power/heat level control, can you turn the heat down, or turn it up.
>
> 27. Cooling down control to reduce temps, can you cool the pan to prevent
> scorching when the oil starts to smoke?
>
> 28. Serviceability and reparability can you get spare parts, can you build
> spare parts locally? Are there consumable parts? If so are they replaceable?
>
> 29. Ease of clean up.
>
> 30. Sanitary construction, Are there any places for bacteria to hide like
> cracks or dry laps or inside corners. Does the stove smell bad? like putrid
> grease?
>
> 31. Portability, Is it easy to load, transport, easy to set up?
>
> 32. Does the stove make charcoal? for biochar? for cooking fuel?
>
> 33. Can you submersible the stove in sea water and it still function?
>
> 34. Shipping cost crate charge, logistic, can assembly be done on site?
>
> 35. Environmental impact, soil erosion or depletion, deforestation, air
> pollution,
>
> 36. Does it have entertainment value, is it fun to use, conversation
> starter, common topic of conversation for people with diverse backgrounds
> and cultures. Everyone has something to say about food and cooking.
>
> 37. How well does it work for emergency and disaster response? and for
> short and long term survival situations?
>
> 38. Does the stove have the potential to create local commerce? Local
> manufacturing/ assembly of the stove or sales of stoves, and street vending.
>
> 39. Ash management. How easy to empty and can you do it while the stove is
> in use.
>
> 40. Will the stove help process or dry its own fuel?
>
> 41. Chimney or no chimney?
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves, News and Information see our web site:
> http://stoves.bioenergylists.org/
>
------------------------------------------------------------------------------
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
stoves at lists.bioenergylists.org
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
for more Biomass Cooking Stoves, News and Information see our web site:
http://stoves.bioenergylists.org/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20130407/89fda9fb/attachment.html>
More information about the Stoves
mailing list