1 / 14

The Stirling Cycle

The Stirling Cycle. Kyle Spengler. The Stirling Cycle. Process 1-2: Isothermal expansion 2-3: Constant-volume cooling 3-4: Isothermal compression 4-1: Constant-volume heating. http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle. The Stirling Cycle.

flavia-estes
Télécharger la présentation

The Stirling Cycle

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. The Stirling Cycle Kyle Spengler

  2. The Stirling Cycle • Process 1-2: Isothermal expansion • 2-3: Constant-volume cooling • 3-4: Isothermal compression • 4-1: Constant-volume heating http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle

  3. The Stirling Cycle • Closed Cycle – the working fluid never leaves the system • Reversible • External heat source – any heat source is valid, as long as it produces enough heat to expand the fluid • Uses a “regenerator” to conserve internal energy and increase thermal efficiency. http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle

  4. The Stirling Engine • First developed in 1816 by Reverend Dr. Robert Stirling • After development, had little use until the mid 1900’s, when it became more common • Used today in many applications, primarily green energy, since the heat source can be anything (geothermal, solar, etc.) http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle

  5. The Stirling Engine • Main application of the Stirling cycle • Uses pistons and cylinders to rotate a crankshaft • Two types/configurations – Alpha and Beta • Alpha Stirling engines use two cylinders and two pistons • Beta Stirling engines use one cylinder, one piston and a “displacer” http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle

  6. Pros • Mechanically very simple in comparison to internal combustion engines • Lightweight, compact • Not limited by fuel or heat source • Aside from a longer warm-up time, reliable in cold weather (unlike some engines) http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle

  7. Cons • Low torque • In order to be more efficient, it requires metals with very high thermal conductivity, which can be expensive • Rotation is not always smooth – the fluid sometimes heats up faster than it cools off http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle

  8. Alpha Stirling Engine http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle

  9. Beta Stirling Engine http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle

  10. Cool Stuff • This one runs off of body heat • Probably no real application, just cool http://en.wikipedia.org/wiki/Stirling_engine

  11. Cool Stuff • Solar Stirling engine • Uses reflected sun rays as heat source • Green energy • Could power a house http://www.researchdata.us/Images/Stirlingdish2.jpg

  12. Cool Stuff • Very large solar Stirling engine • Could probably power a small city http://www.tommccarty.com/blog/wp-content/uploads/2008/08/brightsource-solar-mojave2.jpg

  13. Cool Stuff • Theoretical solar Stirling engine • Uses residual heat produced from a solar panel sitting in the sun as heat source • Converts the unused heat into electrical energy that can be used http://www.peacekeeper.com/freeideas/ow.asp?p=PersonalStirlingEngine&a=print

  14. Works Cited • http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle • http://www.tommccarty.com/blog/wp-content/uploads/2008/08/brightsource-solar-mojave2.jpg • http://www.peacekeeper.com/freeideas/ow.asp?p=PersonalStirlingEngine&a=print • http://www.researchdata.us/Images/Stirlingdish2.jpg

More Related