Refrigerator and data centre: what they have in common

1. Step 1. Refrigerator — works like — Heat pump. A heat pump is a refrigerator that heats the house.
2. Step 2. Heat pump — is used in — Air conditioner. An air conditioner is a heat pump that carries heat out of the room.
3. Step 3. Air conditioner — is part of — Data centre. Cooling.

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