Cleanroom and hammer: what they have in common

1. Step 1. Cleanroom — uses — Air conditioner. Air filtration.
2. Step 2. Air conditioner — uses — Vapour-compression cycle. The vapour-compression cycle.
3. Step 3. Vapour-compression cycle — uses — Latent heat. The evaporation of the refrigerant produces cold.
4. Step 4. Latent heat — is used in — Boiler. Evaporation needs latent heat.
5. Step 5. Boiler — is part of — Steam hammer. A boiler supplies the steam.
6. Step 6. Steam hammer — evolved from — Hammer. A steam hammer is a hammer lifted by steam, used to forge huge parts.

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