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E

  1. 1. Hot Air VS Boiling Water (Steam) By Ethan Thomas
  2. 2. Problem Which heat source, hot air or boiling water(steam) will make a Stirling engine spin faster when measured in RPM?
  3. 3. Hypothesis Based on the research, hot air will make theStirling engine spin faster than the steam will.
  4. 4. Materials• Stirling Engine (low temperature)• Thermometer• Tachometer• Hot Air Source (hot air popcorn popper)• Steam Source (mug of boiling water)• Chart to Record Data• Timer
  5. 5. Experiment Photos To the right is the Stirling engine used in the experiment. It is a Type B Stirling engine. Note: That little sliver of tape helps the tachometer take measurements.
  6. 6. The thermometer The tachometer
  7. 7. The Stirling engine The Stirling engine on the hot air on the mug of boiling water
  8. 8. ResultsThe Hot Air made the Stirling engine spin fasterwith a top speed of 443 RPM, while the steam only maxed out at 307 RPM.
  9. 9. Dont know enough?http://www.absoluteastronomy.com/topics/Stirling_engine http://www.howstuffworks.com/stirling-engine.htm http://library.thinkquest.org/C006011/english/sites/ stirling.php3?v=2

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