Chiller Technician Interview Questions and Answers

Suction pressure is the pressure at the inlet of a chiller system, which helps in the cooling process.

• Suction pressure is measured in pounds per square inch (psi) or kilopascals (kPa).

• It indicates the pressure at which the refrigerant enters the compressor.

• The suction pressure is typically lower than the discharge pressure.

• A low suction pressure may indicate a refrigerant leak or a problem with the evaporator.

• A high suction pressure may indicate a restriction in the refrigera...read more

Superheat is the temperature of a vapor above its saturation temperature in a refrigeration system.

• Superheat is the difference between the actual temperature of the refrigerant vapor and its saturation temperature at a given pressure.

• It is important in refrigeration systems to prevent liquid refrigerant from entering the compressor, which can cause damage.

• Superheat is typically measured in degrees Fahrenheit or Celsius.

• Proper superheat levels ensure efficient operation and pr...read more

Superheat is the temperature increase of a vapor above its saturation temperature. The amount required varies depending on the system.

• Superheat is the temperature of a vapor above its boiling point at a given pressure

• It is necessary to prevent liquid refrigerant from entering the compressor

• The amount of superheat required depends on the type of refrigerant and the specific system

• Typically, superheat values range from 5 to 20 degrees Fahrenheit

Sub cooling in chiller refers to the process of cooling the refrigerant below its saturation temperature to increase the efficiency of the chiller system.

• Sub cooling helps to ensure that the refrigerant remains in a liquid state throughout the chiller system.

• It involves removing additional heat from the refrigerant after it has already been condensed.

• Sub cooling can improve the overall performance and efficiency of the chiller by increasing the refrigerant's cooling capacity....read more