Transcript Senior Design Project: Engine Turbine

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
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
Problem Statement
• Create a Stirling Engine with reliable power
output
• Maintain high efficiency
• Low Cost
Stirling Engine Configurations
Alpha Configuration
Stirling Engine Configurations
Beta Configuration
Stirling Engine Configuration
Gamma Configuration
Literature Survey
EcoMotor
EcoMotor Component Design
Analysis
Total Mass of Gas
• 𝑀 = 𝑚𝑐 + 𝑚𝑘 + 𝑚𝑟 + 𝑚ℎ + 𝑚𝑒
or
𝑉
• M =
•
•
•
•
•
c- compression space
k- cooler
r- regenerator
h- heater
e- expansion space
• Ideal Gas Law
• 𝑚 = 𝑝𝑉/𝑅𝑇
𝑉
𝑉
𝑉
𝑉
𝑘 + 𝑟 + ℎ + 𝑒)
𝑝(𝑇𝑘𝑐 + 𝑇𝑘
𝑇𝑟
𝑇ℎ 𝑇ℎ
𝑅
Analysis
• Work done by the system
• 𝑊 = 𝑊𝑒 + 𝑊𝑐 = 𝑝 𝑑𝑉𝑐 + 𝑝 𝑑𝑉𝑒 =
𝑉𝑐
)𝑑
𝑑𝛳
𝑉𝑒
𝑝(
𝑑𝛳
+
Analysis
• 𝑇𝑟 =
𝑇ℎ − 𝑇𝑘
ln(
𝑇ℎ
)
𝑇𝑘
• η=1−
𝑇𝑘
𝑇ℎ
Theoretical Data and Results
• Th= 535 °F
• Power= 22.15 Watts
• η= 46.25%
Variables
Vmin,e
Ade
Xp
Adc
α
Θ
Xd
Vdead,c
Ap
0
19in^2
1in
24in^2
0
90
3in
0
8.84in^2
Aheater
Lheater
Nheater
19in^2
2.35in
4
Acooler
Lcooler
Ncooler
24in^2
1.44in
4
Th
Tk
R=
Vr
552.59Kelvin
297.03Kelvin
6.13
6.41in^2
Ve=
3.02
Vc=
68.65
Vheater
=
178.75
Vcooler
=
138.05
Tr=
M=
p=
411.68Kelvin
4.75
28.03PSI
Construction Material
• Aluminum 6061- Power Cylinder, Regenerator
Section, Power Piston
• Stainless Steel- Hot Caps, Displacer Piston
Assembly
• Boston Miter Gears L112Y
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
Cost Analysis
• Stainless Steel - $66.95
• Aluminum 6061 – $135.56
• Hardware – $167.91
(Bearings, Gears, Screws, Pins, Sealants)
• Machining- $6000.00
• Total Cost- $6370.42
Scotch Yoke Stirling Engine 2209
Experimental
• Ran Engine using Mini Hand Torch
• Temperature readings using Raytek Infrared
Thermometer
• Slow-mo feature on IPhone to calculate RPM
•
•
•
•
Th= 552.59 K
Tc=319.26 K
Power = .8925 Watts
600 RPM
Cooling Fan Design and Simulations
FanDesign
Original
Avg Vel
(m/s)
0.616
Volume Flow Rate
Max Vel (m/s)
(in3/s)
0.621
7696.908
Mass Flow Rate
(lb/s)
0.334
Cooling Fan Design and Simulations
FanDesign
Second
Avg Vel
(m/s)
0.505
Max Vel
(m/s)
0.517
Volume Flow Rate
(in3/s)
6409.665
Mass Flow Rate
(lb/s)
0.278
Cooling Fan Design and Simulations
FanDesign
Third
Avg Vel
(m/s)
1.776
Volume Flow Rate
Max Vel (m/s)
(in3/s)
1.785
22131.777
Mass Flow Rate
(lb/s)
0.959
Cooling Fan Design and Simulations
FanDesign
Fourth
Avg Vel
(m/s)
1.504
Max Vel (m/s)
1.804
Volume Flow Rate
(in3/s)
22366.179
Mass Flow Rate
(lb/s)
0.969
Simulation Results
Avg Vel Max Vel
FanDesign (m/s)
(m/s)
Volume
Flow Rate
in3/s
Mass Flow
Rate lb/s
Original
0.615
0.620
7696.907
0.333
Second
0.504
0.516
6409.665
0.277
Third
1.775
1.784
22131.776
0.959
Fourth
1.509
1.803
22366.179
0.969
Fifth
0.758
0.795
9863.1701
0.427
Application
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
Standards
•
SAE:
– 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
Schedule
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
Future Work
• Further optimization of Cooling Fans
• Machining of EcoMotor using Metals
• Couple EcoMotor with another system and
monitor results