5. LĂČ Tráș„u: Breakdown
â Available since at least the 1950s
â Common around Vietnam
â Features:
â Hands off operation
â Continuous
â Inexpensive
6.
7.
8.
9. Drawbacks
â Still smokey, even with chimney (unless you
tend constantly)
â Start up is slow
â Pot size choices limited
10. Portable Variation
â Mayon Turbo, Quasi-gasifier, âŠ
â Same principle of direct combustion
15. Belonio Gasifier: Breakdown
â By Dr. Alexis Belonio in the Phillipines
â TLUD with Fan
â Blue flame (sexy)
â Emissions like a gas stove
â Great thermal performance
â Lights up almost instantly
â Nice turn-down with fan
â Wonderful handbook. âRice husk gas stove
handbookâ
17. Belonio Gasifier: Drawbacks
â Loading and unloading is inconvenient
â Wind puts flame out easily
â Disastrous failure mode if left on
â RESULT: 10% adoption rate
(Vietnam National University, 200 stove study)
18. Remote Burner
â One possible solution: downdraft operation,
burn gas in separate burner
â Allows continuous operation
19.
20. Remote Burner
â BUT
â Lighting now not as easy
â Persnickety burners
â Tar collection in pipes
(cooking gasifiers are run largely in the pyrolysis
mode, not gasification. 90 SGR* vs. 140 SGR for
gasification)
*SGR: Specific Gasification Rate [kg / hr-m^2]
21. Rice husk cook stoves: Many
designs are technically possible,
but no product exists that
balances technical feasibility with
user needs at a large scale.