Entries by Kim Still

Inventor’s Pride: Watch Out!

Having unbiased villagers or Dr. Jim Jetter test Aprovecho’s Lorena stove might have helped to reduce our embarrassment when again and again the open fire was proven to be much more fuel efficient! Inventor’s pride is a well-known human frailty. Creating a truth-telling team including all the folks concerned with a stove project helps to […]

Fluidized Bed Combustion, Top Lit up Draft, and the Jet-Flame

The Jet-Flame was developed from combustion concepts used in fluidized beds and TLUDs. Fluidized Bed “In its most basic form, fuel particles are suspended in a hot, bubbling fluidity bed of ash and other particulate materials (sand, limestone etc.) through which (under air) jets of air are blown to provide the oxygen required for combustion […]

Food

In 1976, Aprovecho was started in Guatemala after a terrible earthquake. The founders invented a stove called the Lorena as part of trying to help folks with their farms and forests. In 1981, Aprovecho came back to Oregon and bought 40 acres to learn how to maintain a forest, grow food, and make stoves. The […]

Designing an Optimized Forced Draft Insert

David Evitt, ASAT COO, and Sam Bentson, ARC GM, have been adding capacity to the Laboratory Emissions Monitoring System (LEMS). So far, four oxygen sensors, temperature probes in the fire and under the pot, and a velocity sensor give us a clearer picture of what’s going on in a stove. Knowing PM2.5, CO, CO2, and […]