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 is the primary function of a refrigerator in households?

• To keep food fresh by maintaining a cool temperature

• To heat food

• To dry clothes

• To cook meals

Which substance was commonly used as a refrigerant in older refrigerator models?

• Freon

• Water

• Isobutane

• Ammonia

What happens to the refrigerant as it moves inside the fridge?

• It heats up the interior

• It releases cold air

• It solidifies

• It evaporates and absorbs heat

How does the insulation around the fridge contribute to its function?

• It helps in heating the fridge

• It prevents the refrigerant from evaporating

• It keeps the cold air inside

• It allows air to circulate freely

What is the role of the compressor in the refrigeration cycle?

• To evaporate the refrigerant

• To freeze the refrigerant

• To heat and pump the refrigerant

• To cool the refrigerant