The ice box. An insulated chamber cooled by a block of ice harvested from lakes and streams and delivered to your home by the ice man. Before ice boxes farmers had a spring house where cold spring water flowed through a tub, keeping some items (butter, eggs) cool. Others had root cellars, just a big hole in the ground sometime they packed ice in saw dust to keep it cool in the warmer months. If they had a cave on their property it wasn't unusual for that to be used for cold storage, even to the point of keeping ice collected in the winter for summer use.
Refrigerators are used in houses
Neon gas is used in refrigerators.
Helium can be used in refrigerators, but this application is expensive, not commercial.
Its used in the compressors of refrigerators and air- conditioners
refrigerators
Refrigerators are not bulletproof, but they are built heavy and can take a few heavy knocks and hits before breaking.
CFC's are used in refrigerators. They are extremely harmful for ozone layer.
cfc
METHANE
Fluorine
Admiral refrigerators are made by the Whirlpool Corporation. Before it was taken over by Whirlpool, Admiral appliances were made by Maytag Corporation.
Plasmafied lettuce