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| Stoves Archive for January 2002 |
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| 240 messages, last added Tue Nov 26 17:31:23 2002 |
[Date Index][Thread Index]
Re: "World's Most Efficient Stove" Contest
For many years, the Chinese operated a special facility at their Rural
Energy Training Center outside Beijing used not only for testing stoves
as part of training but also stove efficiency competitions. People
would bring their stoves from all over China or construct them along the
walls of a large auditorium that was instrumented with separate stations
for each stove with thermocouples, scales, etc., such that a dozen or so
stoves could be operated at once. The output from the
instrumentation for each stove was displayed on a large "score
board" comparing the status of the stoves in real-time as they went
through a prescribed set of operations. The ministry gave awards at
the province level for the best stoves and the winners would come to
Beijing for the nationals. The winners of the national competitions
appeared in the national press (and TV too, I think). I heard
recently, however, that the stove building of the training center is no
longer in use. This is after more than 180 million improved stoves
have been introduced since the early 1980s.
Best for the new year for all/k
At 02:13 PM 1/6/2002 -0400, Kevin Chisholm wrote:
Dear Dean
- ----- Original Message -----
- From: Dean Still
- To: stoves@crest.org
- Sent: Sunday, January 06, 2002 2:44 PM
- Subject: Re: "Worlds Most Efficient Stove" Contest
- Dear Kevin,
-
- Can I propose an alternative contest?
-
- Sure can!! :-)
-
- 1: Fastest time to boil
- 2: Most efficient
- 3: Lowest cost stove to boil 1 litre in 5 minutes
- 4: Worlds fastest 8" diameter pancake cooker.
- 5: Worlds fastest wood fueled teapot.
- 6: etc..
- are all very different alternative contests.
-
- Seeing who can boil one litre the fastest tests what stove can blow
up all the wood at once, which seems to have less than optimal
correlation to the real world of fuel efficient cooking.
-
- I fully agree that "the fastest stove contest" would be
unlikely to give an optimal or practical stove. However, I feel that with
the warm summer months coming, and with the need for summertime
entertainment, there would be lots of opportunity for fundamental
advancements on heat transfer and rapid and complete combustion to be
implemented and proven. I am sure that we will be all very impressed at
the clever ways that people come up with to attempt to win their $100.
The important thing will be the practical fallout which wil result from
the "basic research" that flows from such a focused contest.
-
- But, I love the idea of a contest and Aprovecho would throw in
another hundred dollars to the builder of the stove that:
-
- Great!! Perhaps you (and others) could propose other specific
Contests that would lead to advancements in areas of particular
interest.
-
- Using a twelve inch in diameter pot and ten litres of water can
achieve 50% fuel efficiency figuring 8600 BTU's per pound of wood, 1005
BTU's per pound of water boiled away, when burning two pounds of wood. As
of today, the Rocket could edge into the 40%s with fancy skirts so I know
that we wouldn't win this prize.
-
- OK... no problem!! Make up the contest rules for a particular
contest, so that you have a better chance of winning it!! :-)
-
- Be worth a hundred to see who could. No fans, made from vernacular
materials, cost less than ten dollars.
-
- How about it?
-
- May I suggest that, in general, there be as few restrictions as
possible, to leave the door open for the maximum in creative activity?
The contests need not be directly practical.... they could be considered
"R&D projects". However, there should be some basic
rules, so that an "apples and apples comparison" is
possible.
-
- You may wish to configure a Contest which encourages the Entrants to
focus on a problem area of interest to you. This can be a very cost
effective way to get a lot of good basic stove research done.
-
- At any rate, I am sure a lot of us are building, or would like to
build "fun stoves", and the various types of contests available
would serve to focus our efforts in a particular direction. Finally, the
Contest could provide a forum for the dissemination of cleverness in
stove design and construction.
-
- This could be a very fun thing, and these various contests could lead
to some very practical fallout in the wonderful world of stoves.
-
- Kindest regards,
-
- Kevin Chisholm
-
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