How a refrigerator works - Quiz part 2

What is latent heat in the context of a refrigerator?

• The heat generated by the compressor

• The energy required to change the state of the refrigerant without changing its temperature

• The heat lost during condensation

• The energy used to power the refrigerator

What occurs when the refrigerant absorbs latent heat inside the evaporator?

• The refrigerant condenses into a liquid

• The refrigerant evaporates into a gas, cooling the interior

• The refrigerant heats up and releases energy

• The refrigerant remains in the same state

What is the significance of latent heat during the condensation process in a refrigerator?

• The refrigerant absorbs heat from the surroundings

• The refrigerant releases heat to the surroundings as it turns into a liquid

• The refrigerant expands and becomes colder

• The refrigerant’s temperature increases rapidly

Where does the refrigerant release latent heat in a refrigerator?

• Evaporator

• Condenser

• Expansion valve

• Thermostat

What happens to the refrigerant’s temperature during phase changes (evaporation or condensation)?

• It rises significantly

• It falls significantly

• It remains constant

• It fluctuates randomly

Which phase change occurs in the evaporator?

• Condensation

• Evaporation

• Freezing

• Sublimation

Why does the refrigerant absorb heat during evaporation in the evaporator?

• To increase its temperature

• To cool the surrounding air inside the fridge

• To reduce its pressure

• To power the compressor

Why is the release of latent heat important in the condenser?

• It allows the refrigerant to expand and cool down further

• It transfers the absorbed heat from the interior to the surrounding air

• It keeps the thermostat functioning properly

• It compresses the refrigerant for the next cycle

What role does the refrigerant’s latent heat of vaporisation play in the cooling process?

• It prevents the refrigerant from evaporating

• It allows the refrigerant to absorb large amounts of heat during evaporation

• It ensures the refrigerant remains a gas in the condenser

• It keeps the compressor from overheating

How does the refrigerant’s latent heat of condensation aid the refrigeration cycle?

• By increasing the refrigerant’s pressure in the compressor

• By cooling the air inside the refrigerator

• By releasing stored heat to the environment in the condenser

• By speeding up the thermostat’s response