Forging press dies and heat pump: what they have in common

1. Step 1. Forging press dies — is part of — Forging press. A tool that squeezes the workpiece.
2. Step 2. Forging press — evolved from — Steam hammer. Pressing instead of striking.
3. Step 3. Steam hammer — has part — Cylinder. A steam cylinder.
4. Step 4. Cylinder — is part of — Watt steam engine. Steam works in the cylinder.
5. Step 5. Watt steam engine — inspired — Thermodynamics. Carnot wrote “Reflections on the Motive Power of Fire” trying to understand steam engines.
6. Step 6. Thermodynamics — is used in — Heat pump. A heat pump moves heat from cold to warm by spending work — by the laws of thermodynamics.

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