Transcript Nut & Seed Oil Press Green Team Section B

Nut & Seed Oil Press
Green Team
Section B
CAD Model
mass pulleys
mass pulleys
mass
lower pulleys
piston
treadles
collection containers
Market & Customer Data
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Purpose
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Many people (particularly in Africa) lack oil in their diet and suffer
from malnutrition and disease
Only 5% of peanut oil produced worldwide is imported/exported.
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Customer
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There is a need for locally producing peanut oil.
Small-scale nut/seed oil producers worldwide, specifically in
developing countries
Market (for peanut oil and meal)
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49.2% of peanut processing is devoted to oil production.
West Africa, China, and India are the world leaders in utilizing
peanuts for crushing (combined total of 2,580,000 metric tons/year)
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Africa: 5,423,000 metric tons/year
Asia: 20,964,000 metric tons/year
Existing Methods
Screw Press
Solvent Extraction
Ram Press
Design Specifications
Customer Needs/Technical
Requirements
Design Attributes
Is human-powered
Treadles
Can be operated by someone who is
lightweight
Pulley system to allow operator to lift
significantly more than his/her own
body weight
Must generate pressures of at least
600 psi
Piston with large mass
Can be easily constructed and
repaired
Uses pulleys and rope (as opposed
to gears) to transfer power from
human to piston
Design Parameters
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Peanut Oil Extraction
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Hydraulic press with
gauge provided by Amy
Smith
Pressures:
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200 psi: onset of oil
extraction
800 psi: oil drips
25% of peanut mass is
extracted as oil
Video
Technical Analyses
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Assumptions:
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Requirements:
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100 lb. person
Lift mass of 1000 lbs.
1:1 lever arm ratio
10 turns on piston pulley system
2 in2 of a layer of peanuts
Results:
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Step size of 1 ½ ft.
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Piston travels only 2 inches
Natural hold at step transitions to squeeze out oil
Conclusion
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What we learned:
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Some methods feasible, but complicated:
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Gears
Ratchet mechanism
Required pressure is difficult to obtain using
human power alone.
Recommendations:
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Can pounding extract equal amount of oil?
Is a hydraulic mechanism too intricate?