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In an on-off control refrigeration system, which one of the following expansion devices is used?
- a)Capillary tube
- b)Thermostat
- c)Automatic expansion valve
- d)Float valve
Correct answer is option 'B'. Can you explain this answer?
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In an on-off control refrigeration system, which one of the following...
On-off control is done by a thermostat.
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In the On-off control of the air-handling unit, the fan motor is operated intermittently by the room thermostat, the bulb of which is installed in the return air.
A thermostatic expansion valve maintains a constant degree of superheat at the exit of an evaporator; hence it is most effective for dry evaporators in preventing the slugging of the compressors since it does not allow the liquid refrigerant to enter the compressor.
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In an on-off control refrigeration system, which one of the following...
Explanation:
On-off control refrigeration system is a type of refrigeration system that uses a simple on-off switch to control the compressor. The compressor is either turned on or off depending on the temperature inside the refrigeration unit.
Expansion Device Used:
The expansion device used in an on-off control refrigeration system is a thermostat. The thermostat is a temperature-sensitive device that controls the flow of refrigerant into the evaporator. When the temperature inside the refrigeration unit rises above a certain level, the thermostat opens up and allows the refrigerant to flow into the evaporator. When the temperature inside the refrigeration unit drops below a certain level, the thermostat closes and stops the flow of refrigerant into the evaporator.
Other Expansion Devices:
Capillary Tube: A capillary tube is a small diameter tube that is used as an expansion device in some refrigeration systems. It works by restricting the flow of refrigerant into the evaporator, which causes the pressure to drop and the refrigerant to expand.
Automatic Expansion Valve: An automatic expansion valve is a device that regulates the flow of refrigerant into the evaporator based on the pressure inside the system. It opens up when the pressure drops and allows more refrigerant to flow into the evaporator. It closes when the pressure rises and restricts the flow of refrigerant into the evaporator.
Float Valve: A float valve is a device that controls the flow of refrigerant into the evaporator based on the level of liquid refrigerant in the system. It opens up when the level of liquid refrigerant drops and allows more refrigerant to flow into the evaporator. It closes when the level of liquid refrigerant rises and restricts the flow of refrigerant into the evaporator.
Conclusion:
In an on-off control refrigeration system, the expansion device used is a thermostat. It is a temperature-sensitive device that controls the flow of refrigerant into the evaporator. Other expansion devices include capillary tubes, automatic expansion valves, and float valves.
On-off control refrigeration system is a type of refrigeration system that uses a simple on-off switch to control the compressor. The compressor is either turned on or off depending on the temperature inside the refrigeration unit.
Expansion Device Used:
The expansion device used in an on-off control refrigeration system is a thermostat. The thermostat is a temperature-sensitive device that controls the flow of refrigerant into the evaporator. When the temperature inside the refrigeration unit rises above a certain level, the thermostat opens up and allows the refrigerant to flow into the evaporator. When the temperature inside the refrigeration unit drops below a certain level, the thermostat closes and stops the flow of refrigerant into the evaporator.
Other Expansion Devices:
Capillary Tube: A capillary tube is a small diameter tube that is used as an expansion device in some refrigeration systems. It works by restricting the flow of refrigerant into the evaporator, which causes the pressure to drop and the refrigerant to expand.
Automatic Expansion Valve: An automatic expansion valve is a device that regulates the flow of refrigerant into the evaporator based on the pressure inside the system. It opens up when the pressure drops and allows more refrigerant to flow into the evaporator. It closes when the pressure rises and restricts the flow of refrigerant into the evaporator.
Float Valve: A float valve is a device that controls the flow of refrigerant into the evaporator based on the level of liquid refrigerant in the system. It opens up when the level of liquid refrigerant drops and allows more refrigerant to flow into the evaporator. It closes when the level of liquid refrigerant rises and restricts the flow of refrigerant into the evaporator.
Conclusion:
In an on-off control refrigeration system, the expansion device used is a thermostat. It is a temperature-sensitive device that controls the flow of refrigerant into the evaporator. Other expansion devices include capillary tubes, automatic expansion valves, and float valves.
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In an on-off control refrigeration system, which one of the following expansion devices is used?a)Capillary tubeb)Thermostatc)Automatic expansion valved)Float valveCorrect answer is option 'B'. Can you explain this answer?
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