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The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :
- a)efficiency is same at equal charges
- b)the collection efficiency is high for the small particles, and low for the large particles
- c)efficiency coincides with the change in charges on electrodes
- d)the collection efficiency is high for the large particles, and low for the small particles
Correct answer is option 'D'. Can you explain this answer?
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The dust collection efficiency of Electrostatic precipitator is affect...
An electrostatic precipitator (ESP) is a filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge minimally impeding the flow of gases through the unit.
In contrast to wet scrubbers which apply energy directly to the flowing fluid medium, an ESP applies energy only to the particulate matter being collected and therefore is very efficient in its consumption of energy (in the form of electricity).
Most Upvoted Answer
The dust collection efficiency of Electrostatic precipitator is affect...
The correct answer is option 'D': the collection efficiency is high for the large particles, and low for the small particles.
Explanation:
The efficiency of an electrostatic precipitator (ESP) in collecting dust particles is influenced by various factors, including the particle size of the aerosol to be collected. Here's a detailed explanation of why the collection efficiency is high for large particles and low for small particles:
1. Principle of operation:
- An electrostatic precipitator works based on the principle of electrostatic attraction. It uses an electric field to charge the dust particles present in the aerosol.
- The charged particles are then attracted to oppositely charged collection plates or electrodes, where they stick and accumulate.
- The cleaned air is then released from the precipitator.
2. Particle charging:
- In an ESP, the charging process occurs through corona discharge. The aerosol particles are exposed to a corona discharge created by high voltage electrodes.
- The charging efficiency depends on the particle size. Larger particles have a higher probability of being charged effectively compared to smaller particles.
- This is because smaller particles have a higher surface area to volume ratio, which makes it more challenging for them to capture sufficient charge.
3. Collection efficiency:
- The collection efficiency refers to the ability of the electrostatic precipitator to capture and remove dust particles from the air.
- Larger particles have a higher collection efficiency because they are more likely to be charged effectively and subsequently attracted to the collection plates due to their larger mass.
- On the other hand, smaller particles face difficulty in capturing sufficient charge and are more influenced by Brownian motion, which causes them to move randomly and reduces their chances of being collected.
- Additionally, smaller particles are more affected by other forces, such as diffusion and gravitational settling, which can hinder their collection efficiency in an ESP.
In conclusion, the collection efficiency of an electrostatic precipitator is higher for larger particles and lower for smaller particles. This is due to the better charging efficiency and larger mass of the larger particles, making them more effectively attracted to the collection plates.
Explanation:
The efficiency of an electrostatic precipitator (ESP) in collecting dust particles is influenced by various factors, including the particle size of the aerosol to be collected. Here's a detailed explanation of why the collection efficiency is high for large particles and low for small particles:
1. Principle of operation:
- An electrostatic precipitator works based on the principle of electrostatic attraction. It uses an electric field to charge the dust particles present in the aerosol.
- The charged particles are then attracted to oppositely charged collection plates or electrodes, where they stick and accumulate.
- The cleaned air is then released from the precipitator.
2. Particle charging:
- In an ESP, the charging process occurs through corona discharge. The aerosol particles are exposed to a corona discharge created by high voltage electrodes.
- The charging efficiency depends on the particle size. Larger particles have a higher probability of being charged effectively compared to smaller particles.
- This is because smaller particles have a higher surface area to volume ratio, which makes it more challenging for them to capture sufficient charge.
3. Collection efficiency:
- The collection efficiency refers to the ability of the electrostatic precipitator to capture and remove dust particles from the air.
- Larger particles have a higher collection efficiency because they are more likely to be charged effectively and subsequently attracted to the collection plates due to their larger mass.
- On the other hand, smaller particles face difficulty in capturing sufficient charge and are more influenced by Brownian motion, which causes them to move randomly and reduces their chances of being collected.
- Additionally, smaller particles are more affected by other forces, such as diffusion and gravitational settling, which can hinder their collection efficiency in an ESP.
In conclusion, the collection efficiency of an electrostatic precipitator is higher for larger particles and lower for smaller particles. This is due to the better charging efficiency and larger mass of the larger particles, making them more effectively attracted to the collection plates.
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The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :a)efficiency is same at equal chargesb)the collection efficiency is high for the small particles, and low for the large particlesc)efficiency coincides with the change in charges on electrodesd)the collection efficiency is high for the large particles, and low for the small particlesCorrect answer is option 'D'. Can you explain this answer?
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The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :a)efficiency is same at equal chargesb)the collection efficiency is high for the small particles, and low for the large particlesc)efficiency coincides with the change in charges on electrodesd)the collection efficiency is high for the large particles, and low for the small particlesCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :a)efficiency is same at equal chargesb)the collection efficiency is high for the small particles, and low for the large particlesc)efficiency coincides with the change in charges on electrodesd)the collection efficiency is high for the large particles, and low for the small particlesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :a)efficiency is same at equal chargesb)the collection efficiency is high for the small particles, and low for the large particlesc)efficiency coincides with the change in charges on electrodesd)the collection efficiency is high for the large particles, and low for the small particlesCorrect answer is option 'D'. Can you explain this answer?.
The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :a)efficiency is same at equal chargesb)the collection efficiency is high for the small particles, and low for the large particlesc)efficiency coincides with the change in charges on electrodesd)the collection efficiency is high for the large particles, and low for the small particlesCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :a)efficiency is same at equal chargesb)the collection efficiency is high for the small particles, and low for the large particlesc)efficiency coincides with the change in charges on electrodesd)the collection efficiency is high for the large particles, and low for the small particlesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The dust collection efficiency of Electrostatic precipitator is affected by the particle size of the aerosol to be collected, so :a)efficiency is same at equal chargesb)the collection efficiency is high for the small particles, and low for the large particlesc)efficiency coincides with the change in charges on electrodesd)the collection efficiency is high for the large particles, and low for the small particlesCorrect answer is option 'D'. Can you explain this answer?.
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