Entries by Sam Bentson

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Watch Integrated Stove Video

Integrated stove for heating, cooking, electricity Watch a video of the downdraft rocket stove that ASAT Inc. will show in Washington D.C. at the Alliance for Green Heat/DOE sponsored Wood Stove Design Challenge from Nov 9 to 13. ASAT gratefully acknowledges support from the US Environmental Protection Agency under EPA SBIR contract number EPD18009. See […]

Smoke Distributions in a Test Kitchen

ARC has built and used two Test Kitchens and now, has by far the best one, built by Andy McClean and the three summer interns. We are looking at the distribution of smoke and the effect of opening doors and windows. Past tests with the early test kitchens showed that smoke stratified by height with […]

Patterns for Combustion Chambers

If wood gas passes into flame, it can ignite and less un-combusted smoke escapes. Which of the following patterns has the greatest potential for clean burning? Maybe “the devil is in the details”? The pattern that Dr. Winiarski often tries is downdraft/down feed. The wood is burned at the bottom of a vertical stick that […]

Testing in the laboratory and in the field

Testing in the laboratory and in the field It is important to remember that in the Aprovecho lab, the 3 Stone Fire has used less wood and made less pollution than cooking fires and high mass stoves operated by cooks in the field. The fires in the lab tests were carefully made using dry and […]

Happy Holidays Clean Combustion Techniques

Happy Holidays Clean Combustion Techniques 1.)    When wood is burned a lot of smoke is produced but the made charcoal at the tip of the wooden stick contributes heat but does not make much smoke. Rocket Stove: Increase the time that the charcoal at the tip is burning. TLUD: A layer of hot charcoal covers the fresh wood. 2.)    If the stove […]

Refractory Metals at 1,000 Hours in Salty Biomass Combustion Chambers: Big Problems

Energy for Sustainable Development 37 (2017) 20–32, Alloy Corrosion Considerations in Low-Cost, Clean Biomass Cookstoves for the Developing World Michael P. Brady, et al. Michael Brady and others examined the following: “Corrosion evaluation under cookstove-relevant conditions was studied by two methods: 1) lab furnace testing and 2) in-situ exposure in an operating cookstove. The lab […]

Methods to Improve WBT Repeatability

At the InStove HEARTH conference Sam Bentson gave a talk about how to make WBT laboratory test results of rocket stoves more repeatable. The presentation is available here, and the accompanying video may be viewed here. Thank you to InStove for organizing a great event.