T-L06 發動機與冰箱
Engines & Refrigerators (Pt. 1)

Simple Engine


  1. Already Seen: Work → ΔEth     Heat → ΔEth
  2. Application Driven Science: Steam Engine → Industrial Revolution → Modern way of Life
  3. For practical application: must return to original state and repeat
  4. Refrigerators and Engines


Pop Can Engine youtube

Ref/Slides: Knight Chapter v4-ch21, Knight vs3-ch19

Types of Engines/Cycles

Cycle Brayton Otto Diesel Carnot
pV Diagram By Luc1992 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=41130463 By Tokino (original PNG file)MaxDZ8 (conversion to SVG) - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=1924714

Thermal Efficiency

Typical Electric Steam Turbine Power Plant < 40%
Gasoline Engine25% → 50%
Diesel Engine45%
Electric Engine90%

  /   教學   /   物理   baixiaoming AT gmail.com