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This project by Team KiloWatt aims to develop a portable Stirling engine capable of generating 2.5 kWh to power multiple household appliances. We explore the history, functionality, design parameters, and types of Stirling engines (Alpha, Beta, Gamma). The project includes a comprehensive cost analysis, a Gantt chart for project management, and a risk matrix to identify potential challenges. Our goal is to create an efficient, reliable power generator that challenges traditional gas generators, contributing to sustainable and portable energy solutions.
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Team KiloWatt A Lot of Heat A Lot of Power
Introduction Team Members • Jeffrey Kung • Richard Sabatini • Steven Ngo • Colton Filthaut Faculty Advisor • Jim Mohrfeld Richard Sabatini Steven Ngo Colton Filthaut Industry Advisor • Craig Kinzelman(Stirling Technology Inc.) Richard Sabatini Steven Ngo Colton Filthaut Underclassmen • Walter Campos
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
Goals • To have a working Stirling Engine that will serve as a portable generator capable of producing 2.5 kWh • To be able to run multiple common household appliances simultaneously
Household Appliances • Appliances (average): • Refrigerator/Freezer = Start up 1500 Watts • Operating = 500-800 watts • Hot plate = 1200 Watts • Toaster oven = 1200 Watts • Space heater = 1500 Watts • Air Conditioner (5,000 BTUH room unit) = 900 Watts • Lights = Most common are 60 watt light bulbs. • Most rooms/areas on breaker boxes consist of 4-5 light bulbs => 240-300 Watts • Tools (average): • ¼” drill = 250 Watts • ½” drill = 750 Watts • 1” drill = 1000 Watts • Electric Chain Saw 11”-16” = 1100-1600 Watts • 7-1/4” Circular Saw = 900 Watts
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
Background • Created by Robert Stirling in 1816 • His brother, James Stirling, created a Stirling Engine that powered a foundry • ASE- Automotive Stirling Engine • Program created by NASA and the United States Department of Energy • Incorporated in many submarine applications • Propulsion system • Very quiet • Increased efficiency
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
How it Works • The displacer cylinder is heated by an external heat source • The working gas expands in the cylinder creating pressure resulting in movement of the displacer • The working gas forces the displacer in both directions • The cylinder with the power piston compresses and contracts with the change in temperature • This is due to the rejected heat leaving the system through convection • The system restarts this cycle
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
Alpha • Enclosed system with two cylinders that has corresponding pistons which compress and contract with change in temperature
Beta • One cylinder system that encloses one piston and displacer
Gamma • Similar to the Beta but with two cylinders that have a chamber which funnels working gas into the power piston cylinder
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
Previous Attempts • Team Gamma • 2010 • Team Alpha Force • 2011
Choice of Configuration • Gamma • Cost efficient • No seal required in the displacer cylinder • More versatile with its design • Easy to isolate the cold and hot pistons
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
Industry Products • Small Market (Multi-Application) • Largest Market WhisperGen (1 kW) MM-7 (0 kW)
Industry Products (Continued) • Very Small to non- existent market • All designs are singularly produced and fabricated • Relatively Large Market PowerUnit (43 kW) Genoa StirlingEngine (3 KW)
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix
Agenda • Goals • Background • What is it/How it Works • Different Types (Alpha, Beta, Gamma) • Choice of Design Parameters • Industry Products • Cost Analysis • WBS/Gantt Chart • Risk Matrix