LAKOTA CAET TEAM
Erich Vaughan
Ryan Adams
Brandon Gerber
Jonah Lindner
Faculty Advisor:
Dr. Earl Duque
College of Engineering and Technology
Capstone Design Presentation
April 26, 2002
AEROMAG Corporation
“A next generation wind turbine generator and solar
energy company specializing in hybrid renewable
energy systems and components.”
AEROMAG Specializes in:
Helping you get off the grid
But how?
• Wind Energy Systems
• Solar Energy Systems
• Micro Hydroelectric Systems
Lakota CAET Team Capstone Design Presentation
Executive Summary
AEROMAG Corporation of Prescott Valley, AZ
requires a working model of a Lakota Compressed Air
Energy Turbine (CAET).
Lakota is an existing wind turbine, which will be
retrofitted to power a compressor. Lakota CAET is the
compressor and Lakota combination.
Lakota CAET facilitates compressed air energy
storage via a ground level pressure vessel for a
variety of applications.
Lakota CAET Team Capstone Design Presentation
What is CAET?
C OMPRESSED
A IR
E NERGY
T URBINE
Lakota CAET Team Capstone Design Presentation
Air-Lift Water Pump
Water Out
Compressed
Air In
Lakota CAET Team Capstone Design Presentation
Air-Lift Water Pump Application
PUMP
Lakota CAET Team Capstone Design Presentation
Pond Aeration
Lakota CAET
Air-line
Aeration Stone
Lakota CAET Team Capstone Design Presentation
Soil Sparging
Lakota CAET Team Capstone Design Presentation
State of the Art
Current Compressed
Air Energy Turbines
Bowjon Rancher
Airlift Technologies
Lakota CAET Team Capstone Design Presentation
Lakota Profile
Lakota CAET Team Capstone Design Presentation
Lakota Detail
Face Plate
Housing
Nose
Cone
Yaw
Lakota CAET Team Capstone Design Presentation
Furled Turbine
Wind
Furling
Springs
Lakota CAET Team Capstone Design Presentation
Deliverables/Scope of Work
• Select Compressor and Seal
• Design/Analyze – Compressor Housing, Yaw
Assembly, & Shaft
• Develop Bench Test Procedure
• Produce Final Drawings (AutoCAD R14)
• AEROMAG Machines Parts needed for CAET Prototype
• Build and Bench Test Prototype
Lakota CAET Team Capstone Design Presentation
Functional Requirements
• Compressor geometry must not interfere with furling or flow
characteristics
• Compressed air transport must be incorporated into yaw
assembly
• Compressed air will be stored in pressure vessel
• Pressure vessel must exhaust excess air pressure
• 6 mph cut-in speed
• Survive wind speeds up to 120 mph
• Obtain maximum power between 8-9 mph
Lakota CAET Team Capstone Design Presentation
Nonfunctional Requirements
• Must utilize as much existing material as possible
• Design must meet AEROMAG’s aesthetic standards
• Design must be economically viable
• Ten year design life with one scheduled maintenance action
• Manufacturing drawings must utilize metric dimensions
Lakota CAET Team Capstone Design Presentation
Retrofit of Existing
Castings/Components
• Compressor and Seal Integration
• Shaft Coupling
• Machine Design / FE Model
• Manufacturing Drawings
Lakota CAET Team Capstone Design Presentation
Compressor Selection
• Oil-less
• One maintenance action every 5 years
• Size Constraints
– Overall length < 6 in.
• Weather Resistance (possible marine applications)
• Availability
Lakota CAET Team Design Review Presentation
Gast 1534 Compressor
Lakota CAET Team Capstone Design Presentation
Features of Gast 1534
• Oil-less
• Rotary Vane
• Rugged construction/low maintenance
– Design life of approximately 10,000 hours
• 2.2 cfm at 0 psi, 2 cfm at 10 psi
• 5000 rpm operating range
• Compact size (4.05”L x 3.62”W x 3.52”H)
• Light weight (3 lbs.)
• Counter-Clockwise rotation
Lakota CAET Team Capstone Design Presentation
Lakota CAET Shaft
Lakota CAET Team Capstone Design Presentation
Lakota CAET
Compressor Housing
Front View
Side View
Back View
Lakota CAET Team Capstone Design Presentation
Lakota CAET Yaw
Housing
Lakota CAET Team Capstone Design Presentation
Lakota CAET Yaw
Housing
Bushing
Seal
Lakota CAET Team Capstone Design Presentation
Lakota CAET Yaw Shaft
Stainless Steel Sleeve
Lakota CAET Team Capstone Design Presentation
Lakota CAET
Prototype Flange
Front View
Side View
Lakota CAET Team Capstone Design Presentation
3D Yaw Housing Model
Lakota CAET Team Capstone Design Presentation
Finite Element Model
Lakota CAET Team Capstone Design Presentation
Finite Element Model
Lakota CAET Team Capstone Design Presentation
Lakota CAET Assembly In Standard
Operating Position
Lakota CAET Team Capstone Design Presentation
Furled Lakota CAET Assembly
Lakota CAET Team Capstone Design Presentation
Redesign of Furling
Mechanism
• Eliminate bumper stop
• Incorporate steel
cable inside springs
Cable attaches here
Lakota CAET Team Capstone Design Presentation
Bench Test Schematic
RPM
Digital Scale
DC Motor
Lakota CAET Team Capstone Design Presentation
Torque vs. RPM Curves
Lakota CAET Team Capstone Design Presentation
Out of House Components
Item
Unit Cost Quantity Total Cost
ARRM Nylon Rotary Seal
$25.00
Gast 1534 Compressor
$208.30
Digital Scale
$22.00
Pressure Relief Valve
$35.00
Fittings (ball Valve, couplings, etc.)
$50.00
Miscellaneous
Printing Cost
$0.10/page
Total
1
1
1
1
1
750
Lakota CAET Team Capstone Design Presentation
$25.00
$208.30
$22.00
$35.00
$50.00
$50.00
$75.00
$465.30
LAKOTA CAET TEAM
Lakota CAET Team Capstone Design Presentation