1 / 20

Stirling engine

Team Supersonic Rafael Ramirez Derek Schell Ernest Tom Christopher Walker. Stirling engine. OVERVIEW. Initial Customer Design/Acoustic-Rafael Thermodynamic Model-Chris Construction of Artifact-Derek Testing-Tom Improvements-Tom Reflection-Derek. Initial Customer Design/Acoustic.

thelma
Download Presentation

Stirling engine

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Team Supersonic Rafael Ramirez Derek Schell Ernest Tom Christopher Walker Stirling engine

  2. OVERVIEW • Initial Customer Design/Acoustic-Rafael • Thermodynamic Model-Chris • Construction of Artifact-Derek • Testing-Tom • Improvements-Tom • Reflection-Derek

  3. Initial Customer Design/Acoustic Our initial customer design was Thermo Acoustics which is the science of generating or amplifying sound waves using heat. Our team has reconsidered the Thermo Acoustic Project due to limited time and resources .We decided on moving forth a different direction with a Beta Stirling Engine. Reasons: • A Beta Stirling engine seemed to be more feasible than a thermo acoustic engine when it came down to our constraints. • A beta stirling engine modeling and design were fairly similar to thermo acoustics, so all of our progress wasn’t lost. • Out of the major types of stirling engines we chose a beta due to single power piston arranged within the same cylinder on the same shaft as a displacer piston simplifying our design and making us meet our constraints. • Since a beta stirling engine follows a stirling cyclic compression and expansion of air, our modeling followed four processes discussed in Thermo Fluids class

  4. Stirling Engine Components: • Our solar device consists of five components: a dish, heating plate, beta engine, cooling jacket, and a flywheel

  5. Thermodynamic Model • Stirling Cycle • 1-2: Isothermal Expansion • 2-3: Isochoric Heat Removal • 3-4: Isothermal Compression • 4-1: Isochoric Heat Addition • Initial Condition • 4-1: Isochoric Heat Addition • STP -> 1-2 of the cycle

  6. Thermodynamic Model • Beta-type Stirling Engine/Cycle • 1-2: Isothermal Expansion • 2-3: Isochoric Heat Removal • 3-4: Isothermal Compression • 4-1: Isochoric Heat Addition

  7. Thermodynamic Model • Initial State

  8. Thermodynamic Model • Cycle States

  9. Thermodynamic Model • P-v Diagram 13 W

  10. Thermodynamic Model • Flywheel • KE = ½ I ω² • I = mr² • From work output, and size limit of flywheel due to material on hand and solving for ω • ~22,000 rev/min • Designed for 250 rev/min • System will require a matched load or a brake to operate continuously

  11. Thermodynamic Model • Output

  12. Construction of Artifact • Solidworks Model Developed • Tweaked Model due to materials available • All 6061 Aluminum

  13. Machined most of the parts on a lathe and mill on our own

  14. Assembled using small ball bearings to reduce friction Attached to purchased parabolic reflector Adjusted to achieve optimal focal length

  15. Attached to Solar Tracker Water Flow Attached

  16. Testing • Ernest • What do you have working? How do you know it works? How have you documented that it works? • How we ran out of time– final assembly issues

  17. Improvements • Ernest • A plan for any future actions necessary to complete the project successfully

  18. Reflection • Much less structured than other projects • More freedom in design and creation of the prototype • More time to model prior to construction • More instruction on the topic of the semester prior to starting the design • More specific constraints • Teams based on scheduling • Required more individual team organization

More Related