Podcast
Questions and Answers
What are the three main types of compressor regulation systems mentioned in the text?
What are the three main types of compressor regulation systems mentioned in the text?
- Stop-and-Start, Constant Speed, Variable Pressure
- Start-and-Go, Variable Pressure, Steady Flow
- Go-and-Stop, Constant Pressure, Variable Flow
- Start-and-Stop, Variable Speed, Constant Speed (correct)
When does the compressor start in a start-and-stop control system?
When does the compressor start in a start-and-stop control system?
- At maximum receiver pressure
- When the pressure rises to 1000 kPa
- When the pressure drops to zero
- At minimum receiver pressure (correct)
Which type of compression system is typically used for utility air systems with generally steady load demand?
Which type of compression system is typically used for utility air systems with generally steady load demand?
- Start-and-Stop Control system (correct)
- Variable Pressure Control system
- Constant Speed Control system
- Variable Speed Control system
What are two conditions that can make start-and-stop control uneconomical?
What are two conditions that can make start-and-stop control uneconomical?
What is the starting torque like in a sliding vane compressor compared to full load torque?
What is the starting torque like in a sliding vane compressor compared to full load torque?
Which type of compressor is most suitable for a start-and-stop control system according to the text?
Which type of compressor is most suitable for a start-and-stop control system according to the text?
What happens when the receiver reaches the set pressure in the compressor system?
What happens when the receiver reaches the set pressure in the compressor system?
What is an advantage of the suction-unloading valve described in the text?
What is an advantage of the suction-unloading valve described in the text?
What can result from the compressor and suction piping operating under a vacuum?
What can result from the compressor and suction piping operating under a vacuum?
How is control achieved for a sliding vane compressor using start-stop control?
How is control achieved for a sliding vane compressor using start-stop control?
What is an advantage of load-unload control for a rotary compressor?
What is an advantage of load-unload control for a rotary compressor?
In the described load-unload control for a rotary compressor, what happens when the delivery pressure exceeds the required setting?
In the described load-unload control for a rotary compressor, what happens when the delivery pressure exceeds the required setting?
What is the danger associated with the method of controlling the compressor by closing the suction valves?
What is the danger associated with the method of controlling the compressor by closing the suction valves?
What happens when the suction-unloading valve is closed according to the text?
What happens when the suction-unloading valve is closed according to the text?
What is the operation of the valve based on in load-unload control for a rotary compressor?
What is the operation of the valve based on in load-unload control for a rotary compressor?
What is the method used to control the load for rotary compressors as discussed in the text?
What is the method used to control the load for rotary compressors as discussed in the text?
Which control method is used to maintain a constant system pressure by varying the compressor speed?
Which control method is used to maintain a constant system pressure by varying the compressor speed?
Which constant speed control method holds the inlet valve in the open position to prevent air from being trapped inside the cylinder?
Which constant speed control method holds the inlet valve in the open position to prevent air from being trapped inside the cylinder?
What type of control is used automatically unload the compressor during motor start-up?
What type of control is used automatically unload the compressor during motor start-up?
What happens when the air receiver pressure rises to the preset cutout pressure in a pilot valve?
What happens when the air receiver pressure rises to the preset cutout pressure in a pilot valve?
What is the disadvantage of using an inlet air unloader?
What is the disadvantage of using an inlet air unloader?
What happens when the demand for air decreases in a variable speed control system?
What happens when the demand for air decreases in a variable speed control system?
Which control method is used on a compressor that runs at constant speed?
Which control method is used on a compressor that runs at constant speed?
What type of compressor is most likely to go into a surge condition when the speed is reduced too much?
What type of compressor is most likely to go into a surge condition when the speed is reduced too much?
What happens when the manual unload handle on the side of the pilot valve is used for start-up of the compressor?
What happens when the manual unload handle on the side of the pilot valve is used for start-up of the compressor?
What is the advantage of using a suction line unloading valve?
What is the advantage of using a suction line unloading valve?
What is the purpose of the handle labeled 'handle in start position' in the pilot valve diagram?
What is the purpose of the handle labeled 'handle in start position' in the pilot valve diagram?
What is the function of the pressure transmitter in a modulating system?
What is the function of the pressure transmitter in a modulating system?
What is the advantage of a modulating inlet valve control system?
What is the advantage of a modulating inlet valve control system?
What is the disadvantage of inlet vane control for dynamic compressors?
What is the disadvantage of inlet vane control for dynamic compressors?
What is the role of microprocessors in rotary air compressors?
What is the role of microprocessors in rotary air compressors?
What is the function of electrical transducers and sensors in microprocessor-based control systems?
What is the function of electrical transducers and sensors in microprocessor-based control systems?
What is the advantage of microprocessor-based control systems over pneumatic control systems?
What is the advantage of microprocessor-based control systems over pneumatic control systems?
What is the function of mechanical trip switches in electro-pneumatic control systems?
What is the function of mechanical trip switches in electro-pneumatic control systems?
What type of control system is preferred for processes with complicated and varying demand cycles?
What type of control system is preferred for processes with complicated and varying demand cycles?
What is the function of a suction line unloading valve?
What is the function of a suction line unloading valve?
In which scenario is there slight compression in each end of the compressor cylinder but no air is delivered?
In which scenario is there slight compression in each end of the compressor cylinder but no air is delivered?
What happens when the pilot-operated inlet valve in a rotary compressor opens?
What happens when the pilot-operated inlet valve in a rotary compressor opens?
What is the primary disadvantage of closing suction valves in a compressor?
What is the primary disadvantage of closing suction valves in a compressor?
What is the main advantage of load-unload control for a rotary compressor?
What is the main advantage of load-unload control for a rotary compressor?
Why is the control strategy associated with closing suction valves considered complex?
Why is the control strategy associated with closing suction valves considered complex?
What is the role of the adjusting nut in the suction-unloading valve?
What is the role of the adjusting nut in the suction-unloading valve?
What happens when the suction-unloading valve is closed in terms of compressor operation?
What happens when the suction-unloading valve is closed in terms of compressor operation?
Why can start-and-stop control for a sliding vane compressor be considered energy efficient?
Why can start-and-stop control for a sliding vane compressor be considered energy efficient?
What makes load-unload control for rotary compressors suitable for steady load demands?
What makes load-unload control for rotary compressors suitable for steady load demands?
Which type of compressor control system is most suitable for a small reciprocating or sliding vane compressor according to the text?
Which type of compressor control system is most suitable for a small reciprocating or sliding vane compressor according to the text?
What proportion of full-load speed must a sliding vane compressor achieve before the sliding vanes begin to function?
What proportion of full-load speed must a sliding vane compressor achieve before the sliding vanes begin to function?
Which two conditions can make start-and-stop control uneconomical for a compressor?
Which two conditions can make start-and-stop control uneconomical for a compressor?
Which type of compressor is most likely to go into a surge condition when the speed is reduced too much?
Which type of compressor is most likely to go into a surge condition when the speed is reduced too much?
What is the main purpose of the control systems for a compressor?
What is the main purpose of the control systems for a compressor?
Which type of control system is used on a compressor that runs at constant speed?
Which type of control system is used on a compressor that runs at constant speed?
What is one of the disadvantages of using an inlet air unloader in a reciprocating compressor control system?
What is one of the disadvantages of using an inlet air unloader in a reciprocating compressor control system?
What is the function of a spring-loaded piston in the pilot valve used for an inlet air unloader?
What is the function of a spring-loaded piston in the pilot valve used for an inlet air unloader?
What is the purpose of the manual unload handle on the side of the pilot valve in an inlet air unloader?
What is the purpose of the manual unload handle on the side of the pilot valve in an inlet air unloader?
What problem can arise when the compressor and suction piping operate under a vacuum?
What problem can arise when the compressor and suction piping operate under a vacuum?
Which constant speed control method for reciprocating compressors uses a suction unloading valve?
Which constant speed control method for reciprocating compressors uses a suction unloading valve?
What does the adjusting nut in a suction unloading valve control?
What does the adjusting nut in a suction unloading valve control?
What is the primary purpose of control systems for a compressor?
What is the primary purpose of control systems for a compressor?
Which control method is used to automatically unload the compressor during motor start-up?
Which control method is used to automatically unload the compressor during motor start-up?
What happens when the pilot-operated inlet valve in a rotary compressor opens?
What happens when the pilot-operated inlet valve in a rotary compressor opens?
What is the main advantage of using microprocessor-based control systems over pneumatic control systems?
What is the main advantage of using microprocessor-based control systems over pneumatic control systems?
What is the primary purpose of the modulating inlet valve control system?
What is the primary purpose of the modulating inlet valve control system?
Which type of compressor control system is preferred for processes with complicated and varying demand cycles?
Which type of compressor control system is preferred for processes with complicated and varying demand cycles?
What is the function of electrical transducers and sensors in microprocessor-based control systems?
What is the function of electrical transducers and sensors in microprocessor-based control systems?
What is the disadvantage of inlet vane control for dynamic compressors?
What is the disadvantage of inlet vane control for dynamic compressors?
What is the purpose of the handle labeled 'handle in start position' in the pilot valve diagram?
What is the purpose of the handle labeled 'handle in start position' in the pilot valve diagram?
What is the advantage of microprocessor-based control systems over pneumatic control systems?
What is the advantage of microprocessor-based control systems over pneumatic control systems?
What is the function of mechanical trip switches in electro-pneumatic control systems?
What is the function of mechanical trip switches in electro-pneumatic control systems?
What is the primary advantage of modulating inlet valve control?
What is the primary advantage of modulating inlet valve control?
What is the role of microprocessors in rotary air compressors?
What is the role of microprocessors in rotary air compressors?
What causes surging in a compressor?
What causes surging in a compressor?
What happens when the pressure in the discharge line drops below the surge point?
What happens when the pressure in the discharge line drops below the surge point?
What is one of the methods used to prevent surging in a compressor?
What is one of the methods used to prevent surging in a compressor?
What causes the shock wave in a compressor during surging?
What causes the shock wave in a compressor during surging?
What type of compressors are subject to surging?
What type of compressors are subject to surging?
What happens to the direction of flow when surging occurs in a compressor?
What happens to the direction of flow when surging occurs in a compressor?
What is the primary function of the anti-surge valve in a compressor control system?
What is the primary function of the anti-surge valve in a compressor control system?
What input signals does the surge controller receive?
What input signals does the surge controller receive?
What happens when the discharge pressure falls below a certain value for a corresponding flow rate in an anti-surge control system?
What happens when the discharge pressure falls below a certain value for a corresponding flow rate in an anti-surge control system?
What is the purpose of the two pressure inputs to the surge controller?
What is the purpose of the two pressure inputs to the surge controller?
What happens to the anti-surge valve when the compressor shuts down or is shut down for any reason?
What happens to the anti-surge valve when the compressor shuts down or is shut down for any reason?
What is the purpose of the air cooler in a discharge recirculation valve (anti-surge valve) system?
What is the purpose of the air cooler in a discharge recirculation valve (anti-surge valve) system?
Why does surging occur in a compressor?
Why does surging occur in a compressor?
How may surging impact the impeller or piping in a compressor?
How may surging impact the impeller or piping in a compressor?
What is the purpose of a discharge line blow-off valve in preventing surging?
What is the purpose of a discharge line blow-off valve in preventing surging?
What characteristic of the pressure-volume curve indicates the surge point for a centrifugal compressor?
What characteristic of the pressure-volume curve indicates the surge point for a centrifugal compressor?
What condition is necessary for a blow-off valve to open in a compressor system?
What condition is necessary for a blow-off valve to open in a compressor system?
How does surging affect the flow direction within a compressor?
How does surging affect the flow direction within a compressor?
What happens when the surge controller receives input indicating that the pressure differential across the compressor is too high?
What happens when the surge controller receives input indicating that the pressure differential across the compressor is too high?
What occurs when the anti-surge controller begins to close the anti-surge valve after the compressor is up to speed on start-up?
What occurs when the anti-surge controller begins to close the anti-surge valve after the compressor is up to speed on start-up?
If the surge controller senses low discharge pressure at a certain flow rate, what action will be triggered in response?
If the surge controller senses low discharge pressure at a certain flow rate, what action will be triggered in response?
What is the purpose of modern surge control technology that involves microprocessor controllers?
What is the purpose of modern surge control technology that involves microprocessor controllers?
What function does the anti-surge valve serve when the compressor is shut down for any reason?
What function does the anti-surge valve serve when the compressor is shut down for any reason?
What is the role of the discharge recirculation valve in preventing a surge condition in the compressor?
What is the role of the discharge recirculation valve in preventing a surge condition in the compressor?
What is the primary reason for removing water vapour from compressed air?
What is the primary reason for removing water vapour from compressed air?
What effect does oil vapour have on air-operated instruments?
What effect does oil vapour have on air-operated instruments?
What is the purpose of an intercooler in an air compressor system?
What is the purpose of an intercooler in an air compressor system?
What is the main purpose of intercoolers in compressors?
What is the main purpose of intercoolers in compressors?
Why is it important for intercoolers to have drains?
Why is it important for intercoolers to have drains?
What is the role of an aftercooler in an air compressor system?
What is the role of an aftercooler in an air compressor system?
What is one of the additional purposes for cooling air in a compressor?
What is one of the additional purposes for cooling air in a compressor?
What is the primary function of a discharge line blow-off valve in preventing surging?
What is the primary function of a discharge line blow-off valve in preventing surging?
Why should aftercoolers have water separators installed?
Why should aftercoolers have water separators installed?
What is the role of the discharge recirculation valve in preventing a surge condition in the compressor?
What is the role of the discharge recirculation valve in preventing a surge condition in the compressor?
What distinguishes the aftercooler in Figure 12 from the pipeline aftercooler?
What distinguishes the aftercooler in Figure 12 from the pipeline aftercooler?
Why are finned tubing used in air compressors?
Why are finned tubing used in air compressors?
What should be maintained slightly above the pressure dewpoint in a properly designed intercooler?
What should be maintained slightly above the pressure dewpoint in a properly designed intercooler?
In water-cooled intercoolers, what mechanism is employed to direct the air flow around the tubes?
In water-cooled intercoolers, what mechanism is employed to direct the air flow around the tubes?
Why does moisture condense out of the air stream in the intercooler?
Why does moisture condense out of the air stream in the intercooler?
What is the primary purpose of an intercooler in an air compressor system regarding the entrained moisture?
What is the primary purpose of an intercooler in an air compressor system regarding the entrained moisture?
What is the primary purpose of intercoolers and aftercoolers in a multistage compressor system?
What is the primary purpose of intercoolers and aftercoolers in a multistage compressor system?
What happens to water vapour and oil vapour when the air is cooled in an intercooler or aftercooler?
What happens to water vapour and oil vapour when the air is cooled in an intercooler or aftercooler?
Why is it important to remove water vapour from the air in a compressor system?
Why is it important to remove water vapour from the air in a compressor system?
What is an additional benefit of cooling the air during compression?
What is an additional benefit of cooling the air during compression?
What is a consequence of not removing oil vapour from the air?
What is a consequence of not removing oil vapour from the air?
What is the purpose of water jacketing compressors, in addition to using intercoolers?
What is the purpose of water jacketing compressors, in addition to using intercoolers?
What is the primary function of the intercooler in an air compressor system?
What is the primary function of the intercooler in an air compressor system?
Which component in the intercooler system is responsible for removing condensed water and oil?
Which component in the intercooler system is responsible for removing condensed water and oil?
What type of cooling method is typically used in pipeline aftercoolers?
What type of cooling method is typically used in pipeline aftercoolers?
What is the primary purpose of an aftercooler in an air compressor system?
What is the primary purpose of an aftercooler in an air compressor system?
Which component is responsible for changing the direction of the air stream in order to remove moisture and other particles in the aftercooler?
Which component is responsible for changing the direction of the air stream in order to remove moisture and other particles in the aftercooler?
Which type of compressor control system is most suitable for a small reciprocating or sliding vane compressor, according to the text?
Which type of compressor control system is most suitable for a small reciprocating or sliding vane compressor, according to the text?
Which component in the intercooler system is responsible for preventing surging in the compressor?
Which component in the intercooler system is responsible for preventing surging in the compressor?
What type of compressor is most likely to go into a surge condition when the speed is reduced too much?
What type of compressor is most likely to go into a surge condition when the speed is reduced too much?
Which type of compressor control system is typically used for utility air systems with generally steady load demand?
Which type of compressor control system is typically used for utility air systems with generally steady load demand?
What is the primary advantage of using microprocessor-based control systems over pneumatic control systems in air compressors?
What is the primary advantage of using microprocessor-based control systems over pneumatic control systems in air compressors?
What is the main purpose of the prefilters in an instrument air system?
What is the main purpose of the prefilters in an instrument air system?
What is the function of the coalescing filters in an instrument air system?
What is the function of the coalescing filters in an instrument air system?
What is the purpose of the afterfilter in an instrument air system?
What is the purpose of the afterfilter in an instrument air system?
What is the main purpose of using refrigerated dryers in an instrument air system?
What is the main purpose of using refrigerated dryers in an instrument air system?
What is the difference between heated and heatless desiccant dryers in an instrument air system?
What is the difference between heated and heatless desiccant dryers in an instrument air system?
What is the main purpose of using desiccant dryers in an instrument air system?
What is the main purpose of using desiccant dryers in an instrument air system?
What mechanism is employed in a finned tube air-cooled aftercooler to direct the air flow around the tubes?
What mechanism is employed in a finned tube air-cooled aftercooler to direct the air flow around the tubes?
What effect does the compressor intake air temperature have on the air dryer dew point?
What effect does the compressor intake air temperature have on the air dryer dew point?
What is the purpose of ensuring the aftercooler discharge temperature does not get too high in an instrument air system?
What is the purpose of ensuring the aftercooler discharge temperature does not get too high in an instrument air system?
What is the purpose of using coalescing filters in an instrument air system?
What is the purpose of using coalescing filters in an instrument air system?
What is the primary purpose of the instrument air system?
What is the primary purpose of the instrument air system?
What is the function of the inlet filter in the air system?
What is the function of the inlet filter in the air system?
What is the difference between the air in the wet receiver and the dry receiver?
What is the difference between the air in the wet receiver and the dry receiver?
Why should the inlet air be supplied from an atmosphere away from engine or process exhaust outlets?
Why should the inlet air be supplied from an atmosphere away from engine or process exhaust outlets?
What is the purpose of the aftercooler in the air system?
What is the purpose of the aftercooler in the air system?
Why is it important to have the inlet piping at least as large as the compressor intake connection?
Why is it important to have the inlet piping at least as large as the compressor intake connection?
What is the primary function of the wet air receiver in an instrument air system?
What is the primary function of the wet air receiver in an instrument air system?
What type of air compressor is shown in Figure 14?
What type of air compressor is shown in Figure 14?
What is the purpose of the prefilter and afterfilter in the air dryer package?
What is the purpose of the prefilter and afterfilter in the air dryer package?
Why is an elaborate filtering system required if the air compressor is to be oil-lubricated?
Why is an elaborate filtering system required if the air compressor is to be oil-lubricated?
What is the function of the moisture separator in an instrument air system?
What is the function of the moisture separator in an instrument air system?
What is the primary function of the dry air receiver in an instrument air system?
What is the primary function of the dry air receiver in an instrument air system?
What is the purpose of the control system in the packaged air compressor?
What is the purpose of the control system in the packaged air compressor?
Why are coalescing filters used in an instrument air system?
Why are coalescing filters used in an instrument air system?
What is the benefit of using a microprocessor-based control system?
What is the benefit of using a microprocessor-based control system?
What is the main function of the wet air receiver in the instrument air system?
What is the main function of the wet air receiver in the instrument air system?
Which component in a packaged air compressor serves the function of remove condensed water from the compressed air?
Which component in a packaged air compressor serves the function of remove condensed water from the compressed air?
What is the primary function of a dry air receiver in an instrument air system?
What is the primary function of a dry air receiver in an instrument air system?
In a compressor system, what is the purpose of using coalescing filters?
In a compressor system, what is the purpose of using coalescing filters?
What effect does a dry air receiver have on the air purification system during surges in air demand?
What effect does a dry air receiver have on the air purification system during surges in air demand?
What is the function of the moisture separator in an air compressor system?
What is the function of the moisture separator in an air compressor system?
Which function does the wet air receiver in an instrument air system serve in preventing compressor cycling on sudden load changes?
Which function does the wet air receiver in an instrument air system serve in preventing compressor cycling on sudden load changes?
What is the role of coalescing filters in an oil-lubricated air compressor?
What is the role of coalescing filters in an oil-lubricated air compressor?
Why does the wet air receiver help in stabilizing the flow through the air dryers in an instrument air system?
Why does the wet air receiver help in stabilizing the flow through the air dryers in an instrument air system?
What would happen if an elaborate filtering system is not used in an oil-lubricated air compressor to ensure oil-free air?
What would happen if an elaborate filtering system is not used in an oil-lubricated air compressor to ensure oil-free air?
Which type of dryer does not use heat to regenerate the moisture-laden bed?
Which type of dryer does not use heat to regenerate the moisture-laden bed?
Which type of filter is not used in an instrument air system?
Which type of filter is not used in an instrument air system?
What happens if the aftercooler discharge temperature gets too high?
What happens if the aftercooler discharge temperature gets too high?
What material is used in a heated desiccant dryer for the adsorption process?
What material is used in a heated desiccant dryer for the adsorption process?
Which pressure does not fluctuate in the instrument air system?
Which pressure does not fluctuate in the instrument air system?
What happens if the compressor and suction piping operate under a vacuum?
What happens if the compressor and suction piping operate under a vacuum?
What happens when the air in the compressor intake is very dry?
What happens when the air in the compressor intake is very dry?
What is the primary purpose of the modulating inlet valve control system in compressors?
What is the primary purpose of the modulating inlet valve control system in compressors?
Which of the following is not a type of compressor regulation system?
Which of the following is not a type of compressor regulation system?
Which of the following does not affect the operating parameters of an instrument air system?
Which of the following does not affect the operating parameters of an instrument air system?
What is the primary purpose of the air system in a plant?
What is the primary purpose of the air system in a plant?
What happens to the air in the wet receiver?
What happens to the air in the wet receiver?
Why is it important to install an air filter in the inlet line of the compressor?
Why is it important to install an air filter in the inlet line of the compressor?
What is the purpose of the aftercooler in the air system?
What is the purpose of the aftercooler in the air system?
What is the difference between instrument air and utility air?
What is the difference between instrument air and utility air?
Where should the inlet air be supplied from?
Where should the inlet air be supplied from?
What could happen if the pressure dewpoint of the air begins to rise from -60°C to -40°C?
What could happen if the pressure dewpoint of the air begins to rise from -60°C to -40°C?
Where is the moisture-sensing probe typically placed in relation to air dryers with an afterfilter?
Where is the moisture-sensing probe typically placed in relation to air dryers with an afterfilter?
What happens to the desiccant in the glass bulb of an air dryer if the outlet air from the dryer is wet?
What happens to the desiccant in the glass bulb of an air dryer if the outlet air from the dryer is wet?
How does the dewpoint analyzer measure the pressure dewpoint of the compressed air?
How does the dewpoint analyzer measure the pressure dewpoint of the compressed air?
In what way does the moisture content in the air affect the moisture-sensing probe's resistance?
In what way does the moisture content in the air affect the moisture-sensing probe's resistance?
What is one of the main functions of the portable dew point monitor attached downstream of the air dryers?
What is one of the main functions of the portable dew point monitor attached downstream of the air dryers?
What is the primary purpose of a desiccant in a desiccant dryer system?
What is the primary purpose of a desiccant in a desiccant dryer system?
In a regenerative air dryer system, what is the purpose of using heated air for regeneration?
In a regenerative air dryer system, what is the purpose of using heated air for regeneration?
What is the role of a restriction orifice in a regenerative air dryer system?
What is the role of a restriction orifice in a regenerative air dryer system?
How are the desiccant beds in a desiccant dryer system regenerated in a heatless dryer?
How are the desiccant beds in a desiccant dryer system regenerated in a heatless dryer?
What is the purpose of a pressure dewpoint in air compressor systems?
What is the purpose of a pressure dewpoint in air compressor systems?
How does a timer system or PLC control the cycling of the two towers in a desiccant dryer system?
How does a timer system or PLC control the cycling of the two towers in a desiccant dryer system?
What happens to the water vapor in the desiccant bed during the regeneration process?
What happens to the water vapor in the desiccant bed during the regeneration process?
Why is it necessary to remove a desiccant bed before it becomes saturated in a desiccant dryer system?
Why is it necessary to remove a desiccant bed before it becomes saturated in a desiccant dryer system?
What does a dewpoint temperature indicate in compressed air applications?
What does a dewpoint temperature indicate in compressed air applications?
Which component is responsible for carrying away the condensed water from the desiccant in a regenerative air dryer system?
Which component is responsible for carrying away the condensed water from the desiccant in a regenerative air dryer system?
What is the primary purpose of air dryers in an instrument air system?
What is the primary purpose of air dryers in an instrument air system?
What is the function of the heater in an air dryer system?
What is the function of the heater in an air dryer system?
What happens when Dryer 'A' is in adsorption mode?
What happens when Dryer 'A' is in adsorption mode?
What is the purpose of the afterfilters in an air dryer system?
What is the purpose of the afterfilters in an air dryer system?
What is the function of the switching valves in an air dryer system?
What is the function of the switching valves in an air dryer system?
What happens to Dryer 'B' during regeneration?
What happens to Dryer 'B' during regeneration?
What is the primary function of the cartridge-type after filters in an adsorbent air dryer package?
What is the primary function of the cartridge-type after filters in an adsorbent air dryer package?
What distinguishes a heated regeneration type air dryer from a heatless regenerating type?
What distinguishes a heated regeneration type air dryer from a heatless regenerating type?
What is the purpose of the three-way switching valves attached to each dryer in an adsorbent air dryer package?
What is the purpose of the three-way switching valves attached to each dryer in an adsorbent air dryer package?
What is the consequence of not adequately reducing the dew point of the air in a refrigerant type air dryer?
What is the consequence of not adequately reducing the dew point of the air in a refrigerant type air dryer?
How does the regeneration cycle in a refrigerant type air dryer work?
How does the regeneration cycle in a refrigerant type air dryer work?
What is the main difference between the prefilters and afterfilters in an air dryer system?
What is the main difference between the prefilters and afterfilters in an air dryer system?
What is the primary function of the restriction orifice in the air supply line of a regenerative air dryer system?
What is the primary function of the restriction orifice in the air supply line of a regenerative air dryer system?
How does the system ensure that the desiccant bed is not completely saturated with water vapour?
How does the system ensure that the desiccant bed is not completely saturated with water vapour?
What is the purpose of reducing the pressure to atmospheric pressure during regeneration in a heatless dryer?
What is the purpose of reducing the pressure to atmospheric pressure during regeneration in a heatless dryer?
What component in the intercooler system is responsible for preventing surging in the compressor?
What component in the intercooler system is responsible for preventing surging in the compressor?
What happens when the system pressure is 690 kPa gauge, and the dewpoint of the air is minus 40°C at 0 kPa gauge?
What happens when the system pressure is 690 kPa gauge, and the dewpoint of the air is minus 40°C at 0 kPa gauge?
What type of dryer uses a blower and internal electric heaters to heat the purge air?
What type of dryer uses a blower and internal electric heaters to heat the purge air?
What is the difference between Atmospheric Dewpoint and Pressure Dewpoint?
What is the difference between Atmospheric Dewpoint and Pressure Dewpoint?
What is the main purpose of using a molecular sieve desiccant?
What is the main purpose of using a molecular sieve desiccant?
What is the purpose of a dryer package in Figure 18 using a blower and internal electric heaters to heat the purge air?
What is the purpose of a dryer package in Figure 18 using a blower and internal electric heaters to heat the purge air?
What is the primary difference between Atmospheric Dewpoint and Pressure Dewpoint?
What is the primary difference between Atmospheric Dewpoint and Pressure Dewpoint?
What happens to the electrical current flowing between the two electrodes in the moisture-sensing element when the air from the dryer flows through it?
What happens to the electrical current flowing between the two electrodes in the moisture-sensing element when the air from the dryer flows through it?
Where is the moisture-sensing probe typically placed in an instrument air system with an afterfilter?
Where is the moisture-sensing probe typically placed in an instrument air system with an afterfilter?
What is the purpose of the glass bulb with desiccant in some air dryer systems?
What is the purpose of the glass bulb with desiccant in some air dryer systems?
What is the function of the analyzer in a dewpoint analyzer system?
What is the function of the analyzer in a dewpoint analyzer system?
Why is it important to check the dewpoint of the compressed air regularly?
Why is it important to check the dewpoint of the compressed air regularly?
What is the component that converts the electrical signal to a numeric value in the dewpoint analyzer system?
What is the component that converts the electrical signal to a numeric value in the dewpoint analyzer system?
What is the purpose of the air blower in the regeneration cycle of an air dryer?
What is the purpose of the air blower in the regeneration cycle of an air dryer?
What is the function of the three-way switching valves in an air dryer package?
What is the function of the three-way switching valves in an air dryer package?
What is the role of the after filters in an air dryer system?
What is the role of the after filters in an air dryer system?
What is the primary purpose of prefilters in an instrument air system?
What is the primary purpose of prefilters in an instrument air system?
What happens when the delivery pressure exceeds the required setting in a load-unload control for a rotary compressor?
What happens when the delivery pressure exceeds the required setting in a load-unload control for a rotary compressor?
How does the compressor intake air temperature affect the air dryer dew point?
How does the compressor intake air temperature affect the air dryer dew point?
What is the primary purpose of an intercooler in an air compressor system?
What is the primary purpose of an intercooler in an air compressor system?
What is the purpose of monitoring the pressure dewpoint of the compressed air?
What is the purpose of monitoring the pressure dewpoint of the compressed air?
Which material is typically used for the desiccant in a desiccant dryer system?
Which material is typically used for the desiccant in a desiccant dryer system?
Where is the moisture-sensing probe typically placed in relation to air dryers with an afterfilter?
Where is the moisture-sensing probe typically placed in relation to air dryers with an afterfilter?
What is the primary function of the moisture sensor in a desiccant dryer system?
What is the primary function of the moisture sensor in a desiccant dryer system?
How does the moisture-sensing element in the probe respond to changes in air moisture content?
How does the moisture-sensing element in the probe respond to changes in air moisture content?
What is the primary purpose of a coalescing filter in an instrument air system?
What is the primary purpose of a coalescing filter in an instrument air system?
What control system is often used for cycling between the drying and regeneration cycles in a desiccant dryer system?
What control system is often used for cycling between the drying and regeneration cycles in a desiccant dryer system?
What is the purpose of the small glass bulb filled with desiccant in some air dryer systems?
What is the purpose of the small glass bulb filled with desiccant in some air dryer systems?
What is the primary purpose of the modulating inlet valve control system in an air compressor system?
What is the primary purpose of the modulating inlet valve control system in an air compressor system?
What is the function of the analyzer in the dewpoint analyzer system?
What is the function of the analyzer in the dewpoint analyzer system?
What is the advantage of using a portable analyzer to measure pressure dewpoint?
What is the advantage of using a portable analyzer to measure pressure dewpoint?
What is the function of the moisture separator in an air compressor system?
What is the function of the moisture separator in an air compressor system?
What happens to the electrical current flowing between the two electrodes in the moisture-sensing element when the air from the dryer flows through it?
What happens to the electrical current flowing between the two electrodes in the moisture-sensing element when the air from the dryer flows through it?
What is the primary purpose of the control system in a packaged air compressor?
What is the primary purpose of the control system in a packaged air compressor?
What is the effect of the air intake temperature on the air dryer dew point in a compressor system?
What is the effect of the air intake temperature on the air dryer dew point in a compressor system?
What happens to the desiccant bed in a heatless dryer before it enters the regeneration cycle?
What happens to the desiccant bed in a heatless dryer before it enters the regeneration cycle?
What is the purpose of using the term 'purge air' in the context of regenerating a desiccant bed?
What is the purpose of using the term 'purge air' in the context of regenerating a desiccant bed?
Why is the pressure in the chamber reduced to atmospheric pressure before the purge airflow is started in the regeneration cycle?
Why is the pressure in the chamber reduced to atmospheric pressure before the purge airflow is started in the regeneration cycle?
How does the desorbed condensate travel in the desiccant dryer system during the regeneration cycle?
How does the desorbed condensate travel in the desiccant dryer system during the regeneration cycle?
In the context of the desiccant dryer system, what is the purpose of the timer system or PLC?
In the context of the desiccant dryer system, what is the purpose of the timer system or PLC?
Why is it crucial to monitor the dewpoint in a desiccant dryer system?
Why is it crucial to monitor the dewpoint in a desiccant dryer system?
What triggers the regeneration valves to cycle between the drying and regeneration cycles in a desiccant dryer system?
What triggers the regeneration valves to cycle between the drying and regeneration cycles in a desiccant dryer system?
How does a desiccant bed become 'saturated' in the context of a desiccant dryer system?
How does a desiccant bed become 'saturated' in the context of a desiccant dryer system?
What is the role of the molecular sieve desiccant in a desiccant dryer system?
What is the role of the molecular sieve desiccant in a desiccant dryer system?
Why is the cycling of the two towers between the drying and regeneration cycles an essential aspect of a desiccant dryer system?
Why is the cycling of the two towers between the drying and regeneration cycles an essential aspect of a desiccant dryer system?
What is the primary purpose of the pair of three-way switching valves attached to each dryer in an adsorbent air dryer package?
What is the primary purpose of the pair of three-way switching valves attached to each dryer in an adsorbent air dryer package?
What happens to the dry air in Dryer 'A' after it leaves the top valve?
What happens to the dry air in Dryer 'A' after it leaves the top valve?
What is the role of the heater in the regeneration cycle of Dryer 'B'?
What is the role of the heater in the regeneration cycle of Dryer 'B'?
What is the purpose of the cartridge-type after filters in an adsorbent air dryer package?
What is the purpose of the cartridge-type after filters in an adsorbent air dryer package?
What is the state of Dryer 'B' when atmospheric air is blown through a heater, down through the bed, then out to atmosphere?
What is the state of Dryer 'B' when atmospheric air is blown through a heater, down through the bed, then out to atmosphere?
Why are there two towers in an adsorbent air dryer package?
Why are there two towers in an adsorbent air dryer package?
What is the purpose of the stainless steel housing with several holes in the moisture-sensing probe?
What is the purpose of the stainless steel housing with several holes in the moisture-sensing probe?
What happens to the electrical current flowing between the two electrodes in the moisture-sensing element when the air from the dryer flows through?
What happens to the electrical current flowing between the two electrodes in the moisture-sensing element when the air from the dryer flows through?
What is the purpose of the afterfilter in relation to the moisture-sensing probe?
What is the purpose of the afterfilter in relation to the moisture-sensing probe?
What happens to the desiccant in the glass bulb of an air dryer system when the air is dry?
What happens to the desiccant in the glass bulb of an air dryer system when the air is dry?
What is the function of the analyzer in a dewpoint analyzer system?
What is the function of the analyzer in a dewpoint analyzer system?
What is the purpose of checking the pressure dewpoint of the air on a regular basis?
What is the purpose of checking the pressure dewpoint of the air on a regular basis?
What step must be taken to ensure the compressor cylinders are protected from damage due to overheating?
What step must be taken to ensure the compressor cylinders are protected from damage due to overheating?
What is the purpose of ensuring all required safety guards are put back in place before starting the compressor?
What is the purpose of ensuring all required safety guards are put back in place before starting the compressor?
Why should all leaks on flanges be tightened up before starting the compressor?
Why should all leaks on flanges be tightened up before starting the compressor?
What is the purpose of turning on the cooling water for the compressor cylinders?
What is the purpose of turning on the cooling water for the compressor cylinders?
Why should the compressor be in the unloaded position before starting it?
Why should the compressor be in the unloaded position before starting it?
What should be done if leaks are found on the cooling water system?
What should be done if leaks are found on the cooling water system?
Why is it important to check the crankcase/gearbox oil level?
Why is it important to check the crankcase/gearbox oil level?
What should you do if the suction and discharge pressures are abnormally low or high?
What should you do if the suction and discharge pressures are abnormally low or high?
Why is it necessary to check around the compressor for leaks?
Why is it necessary to check around the compressor for leaks?
What can happen if the cylinder lubricator is not working?
What can happen if the cylinder lubricator is not working?
Why is it necessary to ensure the crankcase/gearbox oil levels are at the required levels?
Why is it necessary to ensure the crankcase/gearbox oil levels are at the required levels?
What should you do if you notice unusual noises around the compressor?
What should you do if you notice unusual noises around the compressor?
What is the consequence of starting the motor when the breaker is being closed?
What is the consequence of starting the motor when the breaker is being closed?
What should be done if the cylinder lubricator is not working?
What should be done if the cylinder lubricator is not working?
Why is it important to check the cylinder lubricator before starting the compressor?
Why is it important to check the cylinder lubricator before starting the compressor?
What could happen if the compressor is loaded too quickly?
What could happen if the compressor is loaded too quickly?
Why is it necessary to check for leaks around the compressor?
Why is it necessary to check for leaks around the compressor?
What is the primary reason for slowly loading the compressor?
What is the primary reason for slowly loading the compressor?
Which action is crucial to prevent overheating damage to the compressor cylinders before starting the unit?
Which action is crucial to prevent overheating damage to the compressor cylinders before starting the unit?
What is the purpose of ensuring the compressor is in the unloaded position before starting?
What is the purpose of ensuring the compressor is in the unloaded position before starting?
What safety measure should be taken to prevent personal injury when starting the compressor?
What safety measure should be taken to prevent personal injury when starting the compressor?
Why should leaks on flanges be listened for after opening the suction and discharge valves?
Why should leaks on flanges be listened for after opening the suction and discharge valves?
What is the primary function of the cooling water system in the compressor?
What is the primary function of the cooling water system in the compressor?
What step should be taken to ensure the compressor motor is not overloaded when starting?
What step should be taken to ensure the compressor motor is not overloaded when starting?
What is the first step when starting up the lube oil system?
What is the first step when starting up the lube oil system?
What is the immediate course of action if leaks are observed in the lube oil system during start-up?
What is the immediate course of action if leaks are observed in the lube oil system during start-up?
What is the next step after confirming no leaks and observing proper lube oil pressure in the system?
What is the next step after confirming no leaks and observing proper lube oil pressure in the system?
What action must be taken if unusual noises are observed in the system?
What action must be taken if unusual noises are observed in the system?
When should you load the compressor after beginning the start-up procedure?
When should you load the compressor after beginning the start-up procedure?
Before starting a dynamic compressor/blower, what must be ensured?
Before starting a dynamic compressor/blower, what must be ensured?
Why is it important to ensure that all manual block valves in the suction or discharge lines are open?
Why is it important to ensure that all manual block valves in the suction or discharge lines are open?
What should be done to the surge valves before starting the compressor?
What should be done to the surge valves before starting the compressor?
What is the purpose of doing an inspection to ensure all flanges are tight?
What is the purpose of doing an inspection to ensure all flanges are tight?
Why is it important to ensure the lube oil reservoir has an adequate level?
Why is it important to ensure the lube oil reservoir has an adequate level?
What should be closed before starting the compressor?
What should be closed before starting the compressor?
What must be ensured before starting a dynamic compressor or blower, according to the text?
What must be ensured before starting a dynamic compressor or blower, according to the text?
Why is it critical to ensure the surge valves are open and the suction flow control valve is closed before starting the compressor?
Why is it critical to ensure the surge valves are open and the suction flow control valve is closed before starting the compressor?
What should be the status of the motor breaker before attempting to start the compressor?
What should be the status of the motor breaker before attempting to start the compressor?
Why is it necessary to ensure that manual block valves in the suction or discharge lines are open?
Why is it necessary to ensure that manual block valves in the suction or discharge lines are open?
Why is it crucial to inspect that all flanges are tight and tools have been removed from the compressor unit before starting?
Why is it crucial to inspect that all flanges are tight and tools have been removed from the compressor unit before starting?
What step ensures that the compressor lube oil system is ready for service, according to the text?
What step ensures that the compressor lube oil system is ready for service, according to the text?
What should be checked and corrected, if found, before loading the compressor during its start-up procedure?
What should be checked and corrected, if found, before loading the compressor during its start-up procedure?
During start-up, what immediate action should be taken if leaks are observed in the lube oil system?
During start-up, what immediate action should be taken if leaks are observed in the lube oil system?
Which component in the intercooler system is responsible for preventing surging in the compressor?
Which component in the intercooler system is responsible for preventing surging in the compressor?
How does a desiccant bed become 'saturated' in the context of a desiccant dryer system?
How does a desiccant bed become 'saturated' in the context of a desiccant dryer system?
What should be done if the cylinder lubricator is not working during the start-up procedure?
What should be done if the cylinder lubricator is not working during the start-up procedure?
Flashcards are hidden until you start studying
