Thanks Ron,
I was surprised to see snakes as being one of the problems listed on page ten. Wonder what kind? Surprised to see twisted tape adding efficiency as I would think that would just remove heat that was on its way to the pot. Now that all this info is available this would be a good place to test different fuels, stoves etc. All of the 'six box' variables now controlled and we can swap out one at a time to see what happens. Re-arrange to report the following in order: Review of the six variables: 1) Fuel(s) 2) Fuel manipulation between box1 and box 3 3) Stove(s) 4) Cooking utensil 5) Manipulation between box 4 and box 6 6) Task(s) Calculations from Fuels > Tasks give the efficiencies. Regards Frank Frank Shields Control Laboratories; Inc. 42 Hangar Way Watsonville, CA 95076 (831) 724-5422 tel (831) 724-3188 fax [email protected] www.controllabs.com From: Stoves [mailto:[email protected]] On Behalf Of Ronal W. Larson Sent: Thursday, September 19, 2013 10:43 AM To: Discussion of biomass Subject: [Stoves] A doctoral thesis on stoves List: 1, I recommend this recent new (free) technical stove paper: http://www.energsustainsoc.com/content/pdf/2192-0567-3-16.pdf 2. This is a shortened but still lengthy version of an Indian doctoral thesis. It concentrates on one village and one type of stove, providing extensive testing and good reporting on especially the amount of fuel consumed (mostly for water boiling) and the time taken to acquire it. 3. The main new feature is on using a simple low cost means of getting swirl and thereby better gas mixing. The addition is called a TT - twisted tape. Seems like it is adding 5% to stove efficiencies (which started in the 20-25% range), otherwise no changes to these tradition stoves. The paper provides a good review of almost everything else about simple stoves, including comments on WBTs. The TTs should be applicable to Rockets, TLUDs, etc. 4. I have lost how I came to read it. But think it came from this site: https://www.engineeringforchange.org/news/categories/energy/ Ron
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