Chiller Technician
Chiller Technician Interview Questions and Answers
Q1. What is the suction pressure?
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
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
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
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
Q5. What is the process for chiller starting
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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