Understanding Refrigeration Concepts

What are the main components of the refrigeration cycle?

• Condenser, Pump, Insulator, Thermometer

• Compressor, Filter, Heater, Duct

• Refrigerant, Heat Exchanger, Thermostat, Fan

• Compressor, Condenser, Expansion Valve, Evaporator

How does the compressor function in the refrigeration cycle?

• The compressor absorbs heat from the environment.

• The compressor cools the refrigerant gas.

• The compressor increases the pressure and temperature of the refrigerant gas.

• The compressor condenses the refrigerant into a liquid.

What role does the evaporator play in refrigeration?

• The evaporator filters air to remove impurities.

• The evaporator releases heat to warm the surrounding area.

• The evaporator absorbs heat to cool the surrounding area in refrigeration.

• The evaporator circulates refrigerant without affecting temperature.

Explain the process of heat transfer in refrigeration systems.

• Refrigeration systems rely solely on natural convection for heat transfer.

• The refrigerant is heated and evaporated before being compressed in refrigeration systems.

• The process of heat transfer in refrigeration systems involves compression, condensation, expansion, and evaporation of the refrigerant.

• Heat transfer in refrigeration systems only occurs through conduction.

What is the significance of the condenser in the refrigeration cycle?

• The condenser increases the pressure of the refrigerant vapor.

• The condenser rejects heat and condenses refrigerant vapor into liquid.

• The condenser absorbs heat and vaporizes refrigerant into gas.

• The condenser filters impurities from the refrigerant liquid.

List three common applications of refrigeration in daily life.

• 1. Food preservation 2. Beverage cooling 3. Air conditioning

• Chemical manufacturing

• Ice sculpture creation

• Heating food

How does the refrigerant change state in the refrigeration cycle?

• The refrigerant remains a gas throughout the cycle.

• The refrigerant changes state from liquid to gas in the evaporator, gas to liquid in the condenser.

• The refrigerant changes state from solid to liquid in the evaporator.

• The refrigerant changes state from gas to solid in the condenser.

What is the difference between sensible heat and latent heat in refrigeration?

• Sensible heat changes temperature; latent heat changes phase.

• Sensible heat is related to humidity changes.

• Sensible heat is always higher than latent heat.

• Latent heat is the heat required to increase temperature.

Describe how refrigeration is used in food preservation.

• Refrigeration eliminates all bacteria and pathogens in food.

• Refrigeration is used in food preservation by slowing down the growth of spoilage-causing microorganisms and maintaining food quality.

• Refrigeration increases the temperature of food to enhance flavor.

• Refrigeration is used to cook food quickly and efficiently.

What are some environmental concerns associated with refrigeration systems?

• Environmental concerns associated with refrigeration systems include high GWP refrigerants, energy consumption, ozone layer depletion, and improper disposal.

• Enhanced indoor air quality

• Lower energy costs

• Increased food preservation