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What is the purpose of electrostatic precipitator in ecology unit?

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Question added by SAJIN SHAMSU KUNJU , Sr.MECHANICAL ENGINEER , BLUESTAR QATAR
Date Posted: 2015/08/04
magdy abd al nour
by magdy abd al nour , HVAC Site manger , First United Co.

return and fresh air filtration i think 

Muhammad Arsalan Siddiqui
by Muhammad Arsalan Siddiqui , Associate Director (MEP) , JLL

Due to electrostatic charge dust is removed and air is cleaned

Sherif Mohammed Ibrahim
by Sherif Mohammed Ibrahim , Senior Mechanical Technical engineer , Al-Latifia Trading & Contracting Company

Electrostatic precipitation is a method of dust, and small particulates collection that uses electrostatic forces, and consists of discharge wires and collecting plates. A high voltage is applied to the discharge wires to form an electrical field between the wires and the collecting plates, and also ionizes the gas around the discharge wires to supply ions. When gas that contains an aerosol (dust, mist) flows between the collecting plates and the discharge wires, the aerosol particles in the gas are charged by the ions. The Coulomb force caused by the electric field causes the charged particles to be collected on the collecting plates, and the gas is purified.

Basharat Ali
by Basharat Ali , Mechanical supervisor , FCC

Energy Efficient,

In electrostatic precipitator lot of energy is required to

Electrically charge the grease,

where as Ecology unit works on simple4 stages

Filtration principle which doesn’t require any energy to clean the air.

Easy Monitoring,

In Denair standard ecology unit, Filter status can be easily

Monitored in the status panel,

In case of Electrostatic precipitator grease is released into the ducts or

environment when the plates get covered in grease.

Low operating cost,

Cost of cleaning or changing filter is low in case Ecology

unit whereas in electrostatic precipitator the degreaser used to clean the plates

are very expensive; hot water and waste disposal are required; daily cleaning is a major operating cost.

 

Additional Cost involved in Electrostatic Precipitator: Heated water supply and its drainage will add additional cost to the actual cost.

Babak Kaberi
by Babak Kaberi , Project Coordinator for Engineering Affairs , IOID

Dear colleagues,

Please note that Samar wants to know purpose of electrostatic precipitator in ecology unit. We know what is elec. precipitator, but the point is that: What is its benefit ecologically?

Respect to all other answers I think the Basharat' answer is the most related one.

Thanks Basharat.

Muhammad Yasir
by Muhammad Yasir , MANUFACTURING PLANT

The Electrostatic precipitator is charge the heavy particles which harm the enviroment much more then the tiny one and ESP also reduce th SOx emission.

Mohammad Hussin AL Hussini
by Mohammad Hussin AL Hussini , Application Engineer , Armstrong Fluid Technology

It's a more precise filtration stage by charge the small particles which not catch from previous filtration stages with negative charge and collect it by positive poles

Ismael Hamad
by Ismael Hamad , Trainer , ANTONOIL DMCC , Lukoil project, WQ2

electrostatic precipitator (ESP) is a filtration device that removes fine particles, like dust and smoke,

Gents,

 

for the same airflow and grease content, what is the comparison in filter change cycle (on average) for a multi stage filter Ecology unit (panel-bag-hepa arrangement) vs the cleaning cycle for an electro static precipitator. 

chetan sharma
by chetan sharma , Senior project engineer , trinity engineering services

it consist of electric charges which in turn attracts ducts and smoke due to charge difference they are attracted and electrons in there field decides the charge they carry accordingly the opposite charges are  attracted  to  each other and they collected and filtered.

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