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Transcript of High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment &...
![Page 1: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/1.jpg)
High Volume Manufacturing of Clean Cookstoves
Glo
bal In
no
vation
Cen
ter for
En
ergy, E
nviro
nm
ent &
HealthD
r. B
ryan
Will
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![Page 2: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/2.jpg)
2
Global Innovation Center:(1/3) Mission
The Global Innovation Center for Energy, Environment, and Health, is a . . .
. . . partnership between the College of Engineering and College of Business . . .
. . . to develop and disseminate solutions . . .
. . . to global problems . . .
. . . using a self-sustaining, entrepreneurial approach.
![Page 3: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/3.jpg)
3
Global Innovation Center:(2/3) History
Engines & Energy Conversion Lab (EECL) 1992Now one of the world’s most active R&D programs for internal combustion engines.
Envirofit International 2003A joint effort of the EECL & College of Business to (initially) disseminate a technology solution to pollution from 2-stroke engines in Asia. Now an independent non-profit 501(c)(3) corporation.
Global Innovation Center 2005Further EECL / College of Business partnership to promote commercial solutions to large global problems.
Direct-Injection Retrofit Programfor 2-Stroke Tricycles
Brock Silvers, Dr. Bryan WillsonEnviroFit International, Ltd.
![Page 4: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/4.jpg)
4 Global Innovation Center
Global Innovation Center:(3/3) Initiatives
Household Energy / Stoves– Stoves Laboratory
– Stove design (BrightLights)
– High volume stove manufacturing
– Village power
– CEIHD / Shell China Prize for Stoves
Clean Vehicle Technology– Retrofit solutions for 2-stroke engines
– Retrofit solutions for “dirty diesels”
– “Alternative” fuels: natural gas, “Hythane”
– Biomass fuels: gasification, algae
![Page 5: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/5.jpg)
Global Innovation Center
Outline
•Global need for clean stoves• Current manufacturing practice
• Low-cost manufacturing options
• The modular factory approach
• Design implications
• Implementation strategy
![Page 6: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/6.jpg)
6 Global Innovation Center
Need for Improved Cookstoves
• Health impacts– 1.5 million – 2+ million
annual deaths– Leading cause of death
for children under 5– 2nd leading cause of death for women– Significant contributing factor to many other causes of
premature death: water quality, disease, etc.
• Deforestation
• Climate Change
![Page 7: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/7.jpg)
7 Global Innovation Center
Global Need
• Almost half of the world’s population use solid fuels for household energy:≈ 2 billion utilize biomass
≈ 1 billion utilize coal
• With 4 people / stove, the “global need” is ≈500 million biomass cookstoves
![Page 8: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/8.jpg)
8 Global Innovation Center
EECL Involvement Began through Measurement
![Page 9: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/9.jpg)
Global Innovation Center
Outline
• Global need for clean stoves•Current manufacturing practice
• Low-cost manufacturing options
• The modular factory approach
• Design implications
• Implementation strategy
![Page 10: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/10.jpg)
10 Global Innovation Center
GlobalManufacturing Status• Many excellent
stoves programs
• Cumulative production quantities of 10,000 – 100,000 are exceptional
• China instituted a high production program for coal stoves, with 120+ million units produced
• No established high-production paradigm for biomass stoves
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Great Innovation! Now we Need
Production!
![Page 12: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/12.jpg)
12 Global Innovation Center
AHDESA Stove Models
EcoBarril
EcoFogon, $90 EcoTortillero, $113
EcoLenca, $10
EcoHorno, $120
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Background: Design & Manufacturing
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14 Global Innovation Center
Elements of a Clean Stove:AHDESA EcoHorno Stove, Honduras
“Plancha” (griddle) for tortillas
“Horno” (oven) for bread
“Rocket” combustion chamber for high efficiency & low emissions
Chimney
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AHDESA Stoves• The Ecohorno stove has an oven• The Ecofogon does not• There is also a model with an extended
plancha and no oven for tortilla makers (largest source of income for low-income women)
EcoHorno
EcoFogon
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Stove Factory in Tegucigalpa, Honduras
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“Batch” Production
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Manual Marking & Cutting
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Manual Cutting
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Sheet Metal Bending
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Measuring
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Drilling
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23
Sheet Metal Transition Pieces for Chimney Attachment
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Welding of Planchas
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25 Global Innovation Center
Material Rework
Damper adjustment strip to compensate for
manufacturing variability. Not required on some
units; custom fit for others.
![Page 26: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/26.jpg)
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Customers
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27
Satellite Stove Factory #1
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28 Global Innovation Center
Satellite Stove Factory #2
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29 Global Innovation Center
Satellite Stove Factory #3
![Page 30: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/30.jpg)
30 Global Innovation Center
Satellite Stove Factory #4
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31 Global Innovation Center
Ceramic Factory
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32 Global Innovation Center
Ceramic Manufacturing
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33 Global Innovation Center
Ceramic Manufacturing:An Amateur at Work. . .
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34 Global Innovation Center
Firing Kiln
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35 Global Innovation Center
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36 Global Innovation Center
Flame deflector
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37 Global Innovation Center
A Note on China
• China has a history of mass production of stoves – for coal
• Could transform industry to quickly ramp up for wood stove production
• But officially, wood no longer used as a fuel; compressed crop briquettes used
![Page 38: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/38.jpg)
Global Innovation Center
Outline
• Global need for clean stoves
• Current manufacturing practice• Low-cost manufacturing options
• The modular factory approach
• Design implications
• Implementation strategy
![Page 39: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/39.jpg)
39 Global Innovation Center
The Importance of Cutting• Cutting is the key operation in high-quality, high-
volume manufacturing (of metal stoves)– Establishes the quality of the product– Determines whether specialized “downstream”
equipment can be used– Allows the use of high precision nesting to minimize
material use
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40 Global Innovation Center
Cutting OptionsDie-stamping (“blanking”)
– Large up front cost, but lowest cost for high volumes– Challenge to maximize “nesting” (minimize material)– Little flexibility for design adaptations
CNC “nibbling”Plasma cutting
– 1 layer, best for mid-weight steelsLaser cutting
– Fast for thin steel– Comparable cost to water-jet
Water-jet cutting– Multiple layers– Ceramics & steel– Modest training for maintenance / operation
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41 Global Innovation Center
Water-Jet Cutting
![Page 42: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/42.jpg)
42 Global Innovation Center
Waterjet-Cut Parts
![Page 43: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/43.jpg)
43 Global Innovation Center
Commercial Machines
![Page 44: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/44.jpg)
Global Innovation Center
Outline
• Global need for clean stoves
• Current manufacturing practice
• Low-cost manufacturing options•The modular factory approach• Design implications
• Implementation strategy
![Page 45: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/45.jpg)
45 Global Innovation Center
Self-Replicating Factory Concept
Water-jet cutter first used to produce the “rest of the factory” – the downstream production equipment:
– “Indexed” bending Brakes– Jigs & fixtures
Sheet Steel Receiving /
StorageCutting
Prefab / Bending
Shipping Assembly
Sheet Steel Receiving /
StorageCutting
Prefab / Bending
Shipping Assembly
![Page 46: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/46.jpg)
Global Innovation Center
Outline
• Global need for clean stoves
• Current manufacturing practice
• Low-cost manufacturing options
• The modular factory approach
•Design implications• Implementation strategy
![Page 47: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/47.jpg)
47 Global Innovation Center
Manufacturing Considerations
If a proven design exists:
• Re-examine design for efficient cutting:– Maximize nesting (reduce waste)– Minimize cuts (use existing & common edges)
• Include features for efficient downstream operation:– Cut all holes, as well as edges– Indexing features for bending & joining– Marking & perforations
![Page 48: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/48.jpg)
48 Global Innovation Center
Principles
Consistent, Clean, Efficiency, Affordable, Durable, Desirable
AHDESA motto: A stove must be:– Bueno (Functional)
– Barato (Affordable)
– Bonito (Beautiful)
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49 Global Innovation Center
EcoFogon Stove
![Page 50: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/50.jpg)
50 Global Innovation Center
Exhaust Elbow
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51 Global Innovation Center
Feeder Tray
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Global Innovation Center
Outline
• Global need for clean stoves
• Current manufacturing practice
• Low-cost manufacturing options
• The modular factory approach
• Design implications
•Implementation strategy
![Page 53: High Volume Manufacturing of Clean Cookstoves Global Innovation Center for Energy, Environment & Health Dr. Bryan Willson Peter Letvin.](https://reader037.fdocuments.us/reader037/viewer/2022102818/56649ceb5503460f949b6d52/html5/thumbnails/53.jpg)
53 Global Innovation Center
Throughput• With stacking & optimization, potential to average
cutting of 1 stove every 2 minutes:– 30 / hour– 2 shifts: 500 / day– 5 days / week: 100,000 / year
• Downstream production line can match this throughput, but may exceed purchasing capacity of immediate area
• Suggests regional assembly at satellite shops– Will require duplicate downstream production equipment– Downstream equipment easily replicated
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54 Global Innovation Center
EcoFogon CostsCurrent Production Cost ≈$80
Target Cost for High Production ≈$20• Cost of cutting & capital $2• Steel cost reduction to $12 $12
– High volume purchasing– Improved material nesting– Reduced rejection rate
• Ceramics, paint, materials $3• Labor costs reduced to $3 $3
– Reduced cutting time– Improvement in downstream production– Elimination of rework– Efficient material flow
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55 Global Innovation Center
Marketing• Must be approached both
regionally & locally• Significant uncertainty in
market projections• Indications are that a high-
quality $30 plancha stove would sell well w/o financing
• Possible to meet with a $20 manufacturing cost, but a relatively tight margin for marketing & distribution
MANUAL DEL USUARIO
ECONOMIA Y SALUD PARA SU NEGOCIO Y SU CASA.
EXCELENTE PARA EL USO DOMESTICO Y PEQUEÑOS NEGOCIOS
ECOFOGON
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56 Global Innovation Center
Potential Market PrioritizationPhase I - Honduras
– Established products & production w/ 3 models
Phase II – Central America– Expand focus to include El Salvador, Nicaragua,
Guatemala, Panama, Costa Rica
Phase III – Other Markets– South America: Brazil– Asia: India, Nepal, China– Africa: East, Central, Highlands
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57 Global Innovation Center
CandidateOrganizational Elements• AHDESA / TWP Elements
– Local market knowledge– Product developed for local needs
• Envirofit-like Elements:– Top-notch technology & manufacturing– High production business approach
• Financial Targets– Must at least be sustainable– Goal is profitability
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58 Global Innovation Center
Recent Partner Recognition