Podcast
Questions and Answers
What is the main purpose of shaft seals in a compressor?
What is the main purpose of shaft seals in a compressor?
- To improve the aesthetic appearance of the compressor
- To reduce wear and tear on the compressor
- To prevent or minimize leakage of compressed gases (correct)
- To increase the speed of the compressor
In what scenario are labyrinth seals typically used?
In what scenario are labyrinth seals typically used?
- With non-combustible gases
- In air compressors where some leakage is acceptable (correct)
- For combustible gases
- With toxic gases
How do carbon ring seals differ from labyrinth seals?
How do carbon ring seals differ from labyrinth seals?
- Carbon rings trap escaping gases
- Carbon rings are segments held together with a spring (correct)
- Carbon rings have razor-sharp edges
- Carbon rings present an intricate path for escaping gases
What happens when the carbon ring seal is worn or has broken segments?
What happens when the carbon ring seal is worn or has broken segments?
Why is there considerable wear on carbon ring seals?
Why is there considerable wear on carbon ring seals?
How does a liquid film seal work?
How does a liquid film seal work?
What type of seal is used in hydrocarbon, refrigeration, and fertilizer applications to prevent leakage?
What type of seal is used in hydrocarbon, refrigeration, and fertilizer applications to prevent leakage?
In what situations are oil-free packing ring seals typically used?
In what situations are oil-free packing ring seals typically used?
What type of bearings are commonly used in compressor crankshafts?
What type of bearings are commonly used in compressor crankshafts?
What is the purpose of lubricating oil in a compressor?
What is the purpose of lubricating oil in a compressor?
Which type of dry gas seal is specifically designed for non-hazardous gases at moderate pressure?
Which type of dry gas seal is specifically designed for non-hazardous gases at moderate pressure?
What principle prevents compressed gases from leaking to the atmosphere in mechanical seals?
What principle prevents compressed gases from leaking to the atmosphere in mechanical seals?
In which system does compressor lubrication provide a film around piston rings, vanes, and valves?
In which system does compressor lubrication provide a film around piston rings, vanes, and valves?
What safety hazard is associated with using oil in high-pressure air or oxygen situations?
What safety hazard is associated with using oil in high-pressure air or oxygen situations?
'Grooves machined into the face of the rotating ring' in dry gas seals are primarily intended for which purpose?
'Grooves machined into the face of the rotating ring' in dry gas seals are primarily intended for which purpose?
'Oil drains away to an oil sump' in which type of seal design?
'Oil drains away to an oil sump' in which type of seal design?
What is the primary purpose of internal lubrication in reciprocating compressors?
What is the primary purpose of internal lubrication in reciprocating compressors?
Why do dynamic compressors like centrifugal and axial flow types not require internal lubrication?
Why do dynamic compressors like centrifugal and axial flow types not require internal lubrication?
How is lubricating oil delivered to the rotor shaft bearings in rotary and dynamic compressors?
How is lubricating oil delivered to the rotor shaft bearings in rotary and dynamic compressors?
Why might some applications in the food processing and medical industries prefer oil-free compressors?
Why might some applications in the food processing and medical industries prefer oil-free compressors?
What is the function of intercoolers and aftercoolers in a compressed air system?
What is the function of intercoolers and aftercoolers in a compressed air system?
What mechanism is commonly used to provide internal lubrication in reciprocating compressors?
What mechanism is commonly used to provide internal lubrication in reciprocating compressors?
How does a pressure lubricator prevent metal-to-metal contact in sliding vane rotary compressors?
How does a pressure lubricator prevent metal-to-metal contact in sliding vane rotary compressors?
Why might multistage compressors be necessary for oil-free compressors to attain the required pressure?
Why might multistage compressors be necessary for oil-free compressors to attain the required pressure?
What type of cooling systems are typically used in compressed air systems?
What type of cooling systems are typically used in compressed air systems?
What is the primary advantage of using external lubrication in compressors?
What is the primary advantage of using external lubrication in compressors?
What is the purpose of passing air through the aftercooler in a compressor system?
What is the purpose of passing air through the aftercooler in a compressor system?
Which of the following is NOT mentioned as a potential issue if water vapor is not removed from the compressed air?
Which of the following is NOT mentioned as a potential issue if water vapor is not removed from the compressed air?
Why are intercoolers used in a compressor system?
Why are intercoolers used in a compressor system?
What type of construction is typical for water-cooled intercoolers and aftercoolers?
What type of construction is typical for water-cooled intercoolers and aftercoolers?
Which component is crucial to prevent freezing in instrumentation lines or plug nozzles in controllers and positioners?
Which component is crucial to prevent freezing in instrumentation lines or plug nozzles in controllers and positioners?
What is the purpose of using adsorbents like silica gel in an air dryer system?
What is the purpose of using adsorbents like silica gel in an air dryer system?
Why is it mentioned that adsorbents are very porous in an air dryer system?
Why is it mentioned that adsorbents are very porous in an air dryer system?
What is the primary function of an aftercooler separator in a compressor system?
What is the primary function of an aftercooler separator in a compressor system?
Why does the text suggest passing dehumidified air through a cooling coil after using adsorbents?
Why does the text suggest passing dehumidified air through a cooling coil after using adsorbents?
What safety feature must an aftercooler have if there is a shut-off valve between the aftercooler and the receiver?
What safety feature must an aftercooler have if there is a shut-off valve between the aftercooler and the receiver?
What is the purpose of regenerating the adsorbent in air dryers?
What is the purpose of regenerating the adsorbent in air dryers?
Why are absorbents not commonly used in air dryers?
Why are absorbents not commonly used in air dryers?
What is the purpose of the two heat exchangers in refrigerated air dryers?
What is the purpose of the two heat exchangers in refrigerated air dryers?
Why are safety valves important in air receivers?
Why are safety valves important in air receivers?
What is recommended to minimize corrosion in air receivers?
What is recommended to minimize corrosion in air receivers?
What can result from an overpressure condition in a compressed gas system?
What can result from an overpressure condition in a compressed gas system?
What is the function of check valves in a compressed air distribution system?
What is the function of check valves in a compressed air distribution system?
Why should ventilation be done after opening an air receiver for inspection?
Why should ventilation be done after opening an air receiver for inspection?
What is a common cause of air receiver failure?
What is a common cause of air receiver failure?
Why should safety valves be located at various points on a compressed gas system?
Why should safety valves be located at various points on a compressed gas system?
