Cooling or refrigeration is a cycle in which the temperature travels from a heat source to a reservoir with a higher temperature. From a long time until now in the refrigeration industry, the cooling process in general goes through a fixed cycle physically.
The history of the refrigerator industry
In the past, humans needed to use refrigeration industries to meet a series of their needs, and they do this using primitive methods. It turns out, this work was done at that time using ice and snow in cold seasons. It is interesting that the cooling process has been done in our country Iran since the past, Iran has been a forward-looking country in this field. is About 2400 years ago, the Iranians had achieved a cooling process during which they could store ice even in the summer and use it to prevent food from spoiling in hot and dry areas.
In a series of sources It is claimed that Iranians could use cold foods such as ice cream to eat ice cream in hot seasons by using refrigeration industries.