Larry Winiaski 10 principles of combustion, which aims at maximising heat transfer efficiency, 2 Winiaski basic rocket stove design: burning chamber + insulated chimney + heat transfer stovetop rocket stove or modified as Vortex rocket , 2 , is now available on market, claimed to use 40% less fuel , 70% less smoke a nd cooks faster, lasts for 3 or more years. TE 27% Paul Wheaton Richsoil Peter van den Berg, aka peterberg's Batch Box Rocket , deduced that such rocket stoves are actually based on venturi effect , ( secondary combustion optional for complete combustion) Excel Dean Still's commercial rocket stove , 浙江惠文美 SSM 32-X , 2 2000BTU/h, or 0.035MJ/Min/L, TE 51.5% Envirofit rocket, 8500btu/h Rocket Forum Aprovecho clean burning 2021 Edition Research on gap of pot skirt for high TE SSM's Jet Flame : References: rocket stove primer 3 types of natural draft stov...