When you put something in a refrigerator, it loses heat. Refrigerators work by removing heat from the items stored inside them, which helps to lower their temperature and keep them cool. This cooling process is achieved through the following steps:
Compression: The refrigerator's compressor compresses a refrigerant gas (such as Freon) into a high-pressure, high-temperature state.
Condensation: The hot, pressurized gas passes through the condenser coils at the back or bottom of the refrigerator. As the gas loses heat, it condenses into a liquid state.
Expansion: The high-pressure liquid refrigerant is then forced through an expansion valve or capillary tube, causing it to expand rapidly. This expansion reduces the pressure and temperature of the refrigerant.
Evaporation: The low-pressure, low-temperature liquid refrigerant now enters the evaporator coils inside the refrigerator. As it evaporates into a gas, it absorbs heat from the air inside the fridge and the items stored in it, thereby cooling them down.
So, when you place something in the refrigerator, the heat from the item is transferred to the refrigerant gas through the process of evaporation in the evaporator coils. This heat transfer cools down the item, making it lose heat and reach the desired low temperature inside the refrigerator.