Heat engine and data centre: what they have in common

1. Step 1. Heat engine — uses — Thermodynamics. Thermodynamics describes how engines work.
2. Step 2. Thermodynamics — is used in — Heat pump. A heat pump moves heat from cold to warm by spending work — by the laws of thermodynamics.
3. Step 3. Heat pump — is used in — Air conditioner. An air conditioner is a heat pump that carries heat out of the room.
4. Step 4. Air conditioner — is part of — Data centre. Cooling.

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