Heat Cycles

• 4F30.01 - Hero's Engine
• 4F30.10 - Stirling Engine
• 4F30.20 - Steam Engines
• 4F30.25 - Liquid Nitrogen Engine
• 4F30.40 - Refrigerator
• 4F30.50 - Otto Cycle Engine
• 4F30.52 - Gas Engine Model
• 4F30.60 - Nitinol Wire - Memory Wire
• 4F30.70 - Rubber Band Engine
• 4F30.96 - Carnot Engine