1. Nut & Seed Oil Press
Green Team
Section B

2. collection containers
CAD Model
mass pulleys
mass pulleys
mass
lower pulleys
piston
treadles
collection containers

3. Market & Customer Data Purpose Customer
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.
There is a need for locally producing peanut oil.
Customer
Small-scale nut/seed oil producers worldwide, specifically in developing countries
Market (for peanut oil and meal)
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)
Africa: 5,423,000 metric tons/year
Asia: 20,964,000 metric tons/year
92% of India’s peanut production is all for oil.

4. Existing Methods
Screw Press
Solvent Extraction
Ram Press

5. 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

6. Design Parameters Peanut Oil Extraction
Hydraulic press with gauge provided by Amy Smith
Pressures:
200 psi: onset of oil extraction
800 psi: oil drips
25% of peanut mass is extracted as oil
Video

7. Technical Analyses Assumptions: Requirements: Results: 100 lb. person
Lift mass of 1000 lbs.
1:1 lever arm ratio
Requirements:
10 turns on piston pulley system
2 in2 of a layer of peanuts
Results:
Step size of 1 ½ ft.
Piston travels only 2 inches
Natural hold at step transitions to squeeze out oil

8. Conclusion What we learned: Recommendations:
Some methods feasible, but complicated:
Gears
Ratchet mechanism
Required pressure is difficult to obtain using human power alone.
Recommendations:
Can pounding extract equal amount of oil?
Is a hydraulic mechanism too intricate?