Ice house
device · 1780 BC · Ancient world
A store of natural ice for keeping food cold.
What it is made of
- Ice cellar pit — has part. A sunken room.
Principles and materials it uses
- Stone — is made of. Ice houses were built of stone and sunk into the ground.
- Heat transfer — uses. Thick walls and earth slow down heat transfer.
- Blocks of ice — is made of. Blocks of ice cut in winter.
- Sawdust — is made of. Thermal insulation of the ice.
- Latent heat — uses. Melting ice absorbs heat.
Where it is used
- Refrigerator car — is used in. At first — ice.
History: what it evolved from and what it influenced
- Refrigerator — evolved into. The refrigerator replaced natural ice.