1. EcoEngine: Modified Stirling Engine
Team #2
Abdulkareem Kotun
Ryan Troncoso
Mykenson Pierre
EML 4551 Ethics and Design Project Organization
FIU Department of Mechanical Engineering
Miami, Florida

2. Stirling Engine
Operates by compression and expansion of gases at different temperatures.
Conversion of heat energy to mechanical work
Stirling Engines are known for high efficiency but low reliable power

3. Problem Statement Create a Stirling Engine with reliable power output
Maintain high efficiency
Low Cost

4. Stirling Engine Configurations
Alpha Configuration

5. Stirling Engine Configurations
Beta Configuration

6. Stirling Engine Configuration
Gamma Configuration

7. Literature Survey

8. EcoMotor

9. EcoMotor Component Design

10. M = 𝑝( 𝑉 𝑐 𝑇𝑘 + 𝑉 𝑘 𝑇𝑘 + 𝑉 𝑟 𝑇𝑟 + 𝑉 ℎ 𝑇ℎ + 𝑉 𝑒 𝑇ℎ ) 𝑅
Analysis
Total Mass of Gas
𝑀 = 𝑚𝑐 + 𝑚𝑘 + 𝑚𝑟 + 𝑚ℎ +𝑚𝑒 or
M = 𝑝( 𝑉 𝑐 𝑇𝑘 + 𝑉 𝑘 𝑇𝑘 + 𝑉 𝑟 𝑇𝑟 𝑉 ℎ 𝑇ℎ + 𝑉 𝑒 𝑇ℎ ) 𝑅
c- compression space
k- cooler
r- regenerator
h- heater
e- expansion space
Ideal Gas Law
𝑚 = 𝑝𝑉/𝑅𝑇

11. Analysis Work done by the system
𝑊 = 𝑊 𝑒 + 𝑊 𝑐 = 𝑝 𝑑 𝑉 𝑐 + 𝑝 𝑑 𝑉 𝑒 = 𝑝 ( 𝑉 𝑒 𝑑𝛳 + 𝑉 𝑐 𝑑𝛳 )𝑑

12. Analysis
𝑇 𝑟 = 𝑇ℎ − 𝑇𝑘 ln⁡( 𝑇ℎ 𝑇𝑘 )
η=1− 𝑇𝑘 𝑇ℎ

13. Theoretical Data and Results
Variables
Vmin,e
Ade 19
in^2 Xp 1 in
Adc 24 α Θ 90 Xd 3
Vdead,c Ap
8.84
Aheater
Lheater
2.35
Nheater 4
Acooler
Lcooler
1.44
Ncooler Th
552.59
Kelvin Tk
297.03 R=
6.13 Vr
6.41
Ve=
3.02
Vc=
68.65
Vheater=
178.75
Vcooler=
138.05
Tr=
411.68
Kelvin M=
4.75 p=
28.03
PSI
Th= 535 °F
Power= Watts
η= 46.25%

15. Construction Material
Aluminum Power Cylinder, Regenerator Section, Power Piston
Stainless Steel- Hot Caps, Displacer Piston Assembly
Boston Miter Gears L112Y

16. Experimentation Plan Dynamometer- Measures torque generation
Weighted Scale- Measures force exerted
Torque- Force x Length of Torque Arm
𝑃=𝜏∗𝜔
Where
𝑃=𝑃𝑜𝑤𝑒𝑟
𝜏=𝑡𝑜𝑟𝑞𝑢𝑒
𝜔=𝑎𝑛𝑔𝑢𝑙𝑎𝑟 𝑣𝑒𝑙𝑜𝑐𝑖𝑡𝑦

17. Cost Analysis Stainless Steel - $66.95 Aluminum 6061 – $135.56
Hardware – $167.91
(Bearings, Gears, Screws, Pins, Sealants)
Machining- $
Total Cost- $

18. Scotch Yoke Stirling Engine 2209

19. Experimental Ran Engine using Mini Hand Torch
Temperature readings using Raytek Infrared Thermometer
Slow-mo feature on IPhone to calculate RPM
Th= K
Tc= K
Power = Watts
600 RPM

20. Cooling Fan Design and Simulations
Avg Vel (m/s)
Max Vel (m/s)
Volume Flow Rate (in3/s)
Mass Flow Rate (lb/s)
Original
0.616
0.621
0.334

21. Cooling Fan Design and Simulations
Avg Vel (m/s)
Max Vel (m/s)
Volume Flow Rate (in3/s)
Mass Flow Rate (lb/s)
Second
0.505
0.517
0.278

22. Cooling Fan Design and Simulations
Avg Vel (m/s)
Max Vel (m/s)
Volume Flow Rate (in3/s)
Mass Flow Rate (lb/s)
Third
1.776
1.785
0.959

23. Cooling Fan Design and Simulations
Avg Vel (m/s)
Max Vel (m/s)
Volume Flow Rate (in3/s)
Mass Flow Rate (lb/s)
Fourth
1.504
1.804
0.969

24. Simulation Results FanDesign Avg Vel (m/s) Max Vel (m/s)
Volume Flow Rate in3/s
Mass Flow Rate lb/s
Original
0.615
0.620
0.333
Second
0.504
0.516
0.277
Third
1.775
1.784
0.959
Fourth
1.509
1.803
0.969
Fifth
0.758
0.795
0.427

25. Application

26. Global Learning Produce clean eco-friendly energy at low costs
Will meet a “No Skill” requirement for maintenance
Designed to operate
with SI and US units

27. Standards • SAE: • ANSI/AGMA 2001-C95 • ASME:
Test Method for Measuring Performance of Engine Cooling Fans (J1339)
Engine Terminology and Nomenclature-General (J604)
Engine Sound Level Measurement Procedure (J1074)
Engine Cooling Fan Structural Analysis (J1390)
• ANSI/AGMA 2001-C95
• ASME:
Code of Ethics
Safety Codes and Standards
Energy Efficiency
Heat Systems
Automotive
Renewable and Alternative Energy

28. Schedule

29. Division of Responsibilities
Abdulkareem Kotun – Research, Literature Survey, Formulation of Design, and Analysis
Ryan Troncoso - Solidworks/CAD Design, Simulation, and Prototype Construction
Mykenson Pierre – Solidworks/CAD Design, Material Selection, Cost Analysis

30. Future Work Further optimization of Cooling Fans
Machining of EcoMotor using Metals
Couple EcoMotor with another system and monitor results