SSM 100L institutional stove: $500; 200L stove: $758 https://www.ssmstove.com/products/m100 There are at least four ways to get Winiarski institutional stoves with chimneys (50% to 60% thermal efficiency) into use. The stoves are well known and generally have a good reputation. We very much prefer stoves with chimneys! With maintenance, the inexpensive chimney can protect cooks, keep […]
Outdoor Kitchen at Hwange, Zimbabwe by Michael Sprague on Flickr Our ongoing project goal at ARC is to create a cookstove that makes only 150 mg/mjd of PM 2.5 (Tier 3), so that when Air Changes per Hour (ACH) are tripled we are sure that PM 2.5 emissions are below 64 mg/mjd (Tier 4). Under ISO/TR […]
It’s 5 ft. tall and just never stops pumping them out… Summertime in the garden at Aprovecho has us eating zucchini every day. We really only planted a couple of plants, but you know how it goes… The fridge can only hold so much and it’s rude to abandon it on doorsteps, so how to […]
The Shell Foundation hired Aprovecho Research Center between 2003 and 2004 to bring Dr. Larry Winiarski’s Rocket stove technology to Southern India. Shell Foundation Breathing Space Project The Mission: The goal was to develop an efficient and effective Rocket stove to lower fuel wood consumption and protect health by reducing indoor air pollution. Aprovecho found […]
DS: Because biomass combustion is very complicated and not mathematically described I find that a random approach to experimental design can be productive. This is frequently referred to as the “Black Box” model. I asked Gemini AI about the use of Black Box vs. Open Box models. Gemini AI: “Black box theory views a more […]
Executive Director’s Report – Celebrating Aprovecho’s 50th Anniversary I’ll always remember my first moments at Aprovecho 26 years ago. I had just graduated with a degree in mechanical engineering, newly aware of the realities of household energy poverty, and had completed my first solo cross-country road trip to Oregon to work with a small group […]
In our recent post “Improving Solar Distillation, Part 1,” we talked about the traditional design for a solar still and pointed out some design weaknesses. Here we show Dr. Larry Winiarski’s suggested improvements to address those problems. The distillation of brackish water is a two-stage process. Water is encouraged to evaporate and is then condensed. Sealing […]
A Four-Nation Design Collaboration On their recent trip to SSM in Shengzhou, China, Nordica and Jaden were reminded that many minds are always better than one. SSM were gracious hosts to ARC, OffgridSun from Italy, and Tango Energy from Tanzania for a week. Together, they designed a stove for Tanzania that addressed cooks’ needs, had […]
A typical DIY solar still. (Image from LSU Ag Center) In this type of solar still, salt water is put in a sealed box with an angled glass top. As sunlight entering the box heats up the water, it evaporates into fresh water, condenses on the glass top and runs down into a collector. Dr. […]
Google AI (Gemini) says that: “In a high-performance rocket stove, the average gas temperature within a pot skirt typically ranges between 800C and 1,000C. These gases lose temperature as they flow through the channel gap between the pot and the skirt, where they transfer heat to the water.” One of the interesting things that our lab […]