[Stoves] RE Adding a fan

[Kevin Chisholm]

Dear Dean
...del...>
> For me research is directed by the goal of a most helpful $2-$5 stove.

What areas of the World require a $2-$5 stove? What about if it ended up 
costing $10?

Does this assume an "owner built stove", or is there an allowance for them 
to be made locally, and sold to local people?

 So
> far that seems to include, not in order:
>
> Cooks like how it cooks food

Could you outline what they like, and what they don't like about "how it 
cooks food?"

> Side fed long sticks

What would be the range in diameter of teh sticks, and teh range in poisture 
contents?

> Fast to boil
What is their perception of "fast to boil?"

> Fuel efficient to simmer (good turndown)
What would be an acceptable turn-down ratio? What is teh maximum targeted 
heat input rate, and what is the heat input rate required for simmering?

> Safe
What are the criteria to be met for the stove to be termed "safe?"

> When used does not damage health of user (ventilation helps a lot here!!)
Are tehre any stoves that vent inside teh living space that do not damage 
health?

> $2-$5
Could you please elaborate further on teh $2-$5 cost range target? Is this 
"the cost of materials only, delivered to the site", or does it include a 
labor allowance for building it? What about cost of distributing materials 
to the site? What about the cost of training people how to build and operate 
tehm?  etc.

> Long lasting

What is the minimum acceptable number of uses for a $2 to $5 stove?
>
> I'll try to figure out if a chimney could generate enough force but I'll 
> bet
> that Tom or Paul already know how much force is needed and you can 
> translate
> that into chimney height? I think of fans as plugging into the wall 
> because
> of the $5 cost but that is most likely limited vision on my part.

What percentage of the people using a stove like this would have access to 
wall power?

Dean, your comments on teh above would be most helpful to us who are "at a 
distance" from the problem. We could get a much better appreciation of what 
you are up against.

Best wishes for every success.

Kevin
>
> Best,
>
> Dean
>
>
>
> -----Original Message-----
> From: stoves-bounces at listserv.repp.org
> [mailto:stoves-bounces at listserv.repp.org] On Behalf Of Crispin at 
> newdawn.sz
> Sent: Saturday, May 20, 2006 8:53 AM
> To: Stoves
> Subject: [Stoves] RE Adding a fan
>
> Dear Dean
>
> Congratulations on this major innovation.  I keep seeing two major
> directions emerging, at least on the research front: gasifiers and fans 
> (or
> both).
>
> The performance figures are really impressive.  Shall we look at clockwork
> fans, or ways of getting small amounts of electric power?
>
> Can you get the same result by using a tall chimney and a sealed pot-stove
> interface?
>
> Regards
> Crispin
>
>
>
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