We're designing an improved cook stove for rural Nicaragua. The stove will run on rice husk. The is our design brief after 3 weeks of work.

1. SMALL RED TILE
biogasification stove project proposal
ME jordan edwards
ME isaac lockman
ID peter nguyen
ME marc paré
ID jimmy vo
ID tyler wilson
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2. Providing safe & affordable cooking heat to rural Nicaraguans
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3. GLOBAL CHALLENGE
what kinds of health/societal/environmental issues go along with stoves?
one third of the world’s population
cook over a open flame
open fires produce a lot of smoke
approximately 1.4 million people die per
year from disease related to indoor air
pollution (3 people per second)
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4. GLOBAL CHALLENGE
what kinds of health/societal/environmental issues go along with stoves?
time and money spent gathering fuel open fires are one of the biggest sources
of greenhouse gas emissions in the world
burn danger from exposed flames deforestation from gathering fuel
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5. GLOBAL CHALLENGE
the 8 millennium development goals
the Millennium Declaration promotes a
comprehensive approach that tackles a
broad range of challenges simultaneously.
by 2015, the world aims to have achieved
eight goals for combating poverty, hunger,
disease, illiteracy, environmental degradation
and discrimination against women.
improved cook stoves address all 8
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6. OPPORTUNITY
contributing to make cooking safer
Amigos for Christ has 160 Nicaraguan families in need of cook stoves in Villa Cantalina
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7. LOCAL
the lifestyle of a typical Nicaraguan family
men are often not in the house, women are responsible for
all of the cooking as well as childcare in 5-6 person families
families are usually very poor ($1/day) and have no access
to electricity
they currently cook over wood fires, but the wood is
running out
there is very little access to alternate fuel sources except
waste rice husks
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8. DESIGN INTENT
our goal to overcome these challenges
Design a stove that runs on rice husk
that is safe and culturally accepted
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9. PATENTS
what is already out there
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10. PRECEDENTS
through the eyes of a ME
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11. PRECEDENTS
through the eyes of an ID
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12. PRECEDENTS
using and operating the stoves
OPEN LOAD POWER LIGHT CLOSE
IGNITE COOK REOPEN DUMP DOUSE
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13. PRECEDENTS
using and operating the stoves
LOAD LIGHT COOK TAP
JIGGLE CLEAR DOUSE
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14. PROBLEMS
not everthing is perfect
BATCH CONTINUOUS
this design requires
this design needs a
constant tapping to
battery to operate.
produce an even flame
most people in
throughout the cook
nicaragua cannot
time. the flame is also
afford batteries
relatively unstable
approximately constant refilling is
every 30 minutes, required approximately
the flame goes every 5 minutes to
out. therefore the keep an even flame.
batch needs to be the char also needs to
dumped every 30 be removed during this
minutes time span
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15. APPROACH
how we’re going to overcome this overall challenge
Cooking
Produce Provide Control Over Encourage Safety for Support Be
Heat Cooking Process End User Cookware Maintainable
Convert Provide Cleanable
Rice Husk Fuel Protection
to Biogas from Heat Fixable
Combust Provide Load/Unload
Biogas Stability Fuel
Functions
Constraints
Lower Emissions Provide Su cient Be Easy to
Priced for Market Consistent
to Safe Levels Cooking Surface Operate
Appropriate Heat
Materials
Starting/
Appropriate Stopping
Manufacturing
Techniques
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16. APPROACH
our preliminary specifications
low cost
clean, controlled flame
fits into the culture/environment
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17. CONCLUSION
what we’re reaching for
This product aims to provide safe &
affordable cooking heat to rural Nicaraguans
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18. CONCLUSION
what we have done so far
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