Hot water storage tank and paper machine: what they have in common

1. Step 1. Hot water storage tank — is part of — Solar water heater. A store of hot water.
2. Step 2. Solar water heater — uses — Heat transfer. Heating the water.
3. Step 3. Heat transfer — includes — Convection. A kind of heat transfer.
4. Step 4. Convection — is used in — Hot air balloon. Hot air rises and fills the canopy.
5. Step 5. Hot air balloon — is made of — Paper. It was lined with paper on the inside.
6. Step 6. Paper — uses — Paper machine. Industrial production.

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