Paperboard layer und heat pump: was sie gemeinsam haben

1. Schritt 1. Paperboard layer — ist Teil von — Tetra Pak. Stiffness.
2. Schritt 2. Tetra Pak — ist hergestellt aus — Paper. Cardboard.
3. Schritt 3. Paper — wird verwendet in — Rotary printing press. It prints on a paper web.
4. Schritt 4. Rotary printing press — hat als Teil — Watt steam engine. The first rotary presses were steam-driven.
5. Schritt 5. Watt steam engine — inspirierte — Thermodynamics. Carnot wrote “Reflections on the Motive Power of Fire” trying to understand steam engines.
6. Schritt 6. Thermodynamics — wird verwendet in — Heat pump. A heat pump moves heat from cold to warm by spending work — by the laws of thermodynamics.

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