Why evaporation is low in refrigerator?

1. Low temperature: Refrigerators maintain a low temperature, typically between 35 to 40 degrees Fahrenheit (2 to 4 degrees Celsius). At such low temperatures, the water molecules in the air have less energy and move slower, resulting in a reduced rate of evaporation.

2. Sealed environment: Refrigerators are designed to be airtight and have minimal air exchange with the outside environment. This helps to prevent warm, humid air from entering the refrigerator and increasing the evaporation rate.

3. Humidity control: Refrigerators are equipped with a feature called a "drip pan" or "condenser pan", which collects and evaporates the water that condenses on the evaporator coils during the refrigeration cycle. This helps to maintain a lower humidity level inside the refrigerator and reduces evaporation.

4. Insulation: The walls and doors of refrigerators are insulated with materials like foam or fiberglass, which help to minimize heat transfer and keep the interior cool. This reduced heat helps to slow down the evaporation process.

By keeping the temperature low, maintaining a sealed environment, controlling humidity, and using insulation, refrigerators create conditions that minimize evaporation and help preserve food by preventing moisture loss.