How Does a Refrigerator Work?

The video explains how refrigerators work, starting with their invention in the 1800s. It describes the refrigeration process, which involves a cycle of evaporation and condensation of a refrigerant to maintain a cool temperature inside the fridge. The video discusses different refrigerants used in older and newer models, such as freon and isobutane. It also explains the principle of evaporation and how it helps in cooling, similar to the sensation of air hitting wet skin. The refrigeration cycle is detailed, highlighting the role of the compressor and the energy required to keep the fridge cool.

What are the differences between older and newer refrigerator models in terms of refrigerants used?

Explain how the insulation of a refrigerator contributes to its efficiency.