Chiller Technician

Chiller Technician Interview Questions and Answers

Updated 16 Mar 2024
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Q1. What is the suction pressure?

Ans.

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

Q2. what is superheat and much required

Ans.

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

Q3. what is superheat and how much required

Ans.

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

Q4. what is sub cooling in chiller

Ans.

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

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Q5. What is the process for chiller starting

Ans.

The process for starting a chiller involves checking the power supply, adjusting the settings, and monitoring the system for proper operation.

  • Check the power supply to ensure the chiller has electricity

  • Adjust the settings on the control panel to the desired temperature and pressure levels

  • Monitor the chiller system for any abnormal noises or vibrations

  • Allow the chiller to run for a few minutes to stabilize before connecting it to the load

  • Regularly check and maintain the chille...read more

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