Alloy and air conditioner: what they have in common

1. Step 1. Alloy — includes — Nichrome. Nichrome is an alloy of nickel and chromium.
2. Step 2. Nichrome — is material for — Heating element. The coil is made of nichrome: it has high resistance and does not oxidize when hot.
3. Step 3. Heating element — is part of — Tumble dryer. A heater.
4. Step 4. Tumble dryer — has part — Heat pump. Heat-pump models.
5. Step 5. Heat pump — is used in — Air conditioner. An air conditioner is a heat pump that carries heat out of the room.

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