← (nt06) Heat Engines 1 熱機1 →

Overview

1. Already Seen:
   • Work → ΔE_th
   • Heat → ΔE_th
   • ΔE_th → Heat
   • ΔE_th → Work
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

Questions

• Can I put heat into a system and get out work? (Q_in & W_out)?
• What is the maximum amount of work (W) can get out?
• How can I make a cool room cooler?

Pop Can Engine

Heat Pumps vs Heaters

PowerPoint Presentations Ref: Knight vs 4 Ch 21

• Q(heat) → Δ E_th → Work
• Refrigerators