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

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

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

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

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= 22.15 Watts η= 46.25%

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 Avg Vel (m/s) Max Vel (m/s) Volume Flow Rate (in3/s) Mass Flow Rate (lb/s) Original 0.616 0.621 7696.908 0.334

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 6409.665 0.278

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 22131.777 0.959

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 22366.179 0.969

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 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: • 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

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