Refrigeration Operator Interview Questions and Answers

The suction line carries low-pressure refrigerant vapor from the evaporator to the compressor, while the discharge line carries high-pressure refrigerant vapor from the compressor to the condenser.

• The suction line is larger in diameter compared to the discharge line.

• The suction line carries refrigerant vapor at low pressure and low temperature.

• The discharge line carries refrigerant vapor at high pressure and high temperature.

• The suction line connects the evaporator outlet to ...read more

1 ton is a unit of measurement used in refrigeration to indicate the cooling capacity of an air conditioning system.

• 1 ton refers to the amount of heat required to melt one ton (2,000 pounds) of ice in 24 hours.

• It is equivalent to 12,000 British Thermal Units (BTUs) per hour.

• A 1-ton air conditioner can cool approximately 400-600 square feet of space.

• The cooling capacity of an air conditioning system is often measured in tons.

Refrigeration is a process of removing heat from a space or substance to lower its temperature.

• Refrigeration involves the transfer of heat from one location to another.

• It is used to preserve perishable items by keeping them at low temperatures.

• Refrigeration systems typically consist of a compressor, condenser, expansion valve, and evaporator.

• Examples of refrigeration include refrigerators, air conditioners, and industrial cooling systems.

Thermostat regulates temperature by turning heating or cooling system on/off based on set temperature.

• Thermostat senses temperature and compares it to the set temperature

• If the temperature is too high, the thermostat turns on the cooling system

• If the temperature is too low, the thermostat turns on the heating system

• Once the temperature reaches the set temperature, the thermostat turns off the system

• Thermostats can be programmable or non-programmable