Clean Room Air Filtration
     
 
 
 
Clean Room Air Filtration
  
 
 
 
 
Common problem faced in Conventional HVAC systems
  
 
 
 
Present users of conventional clean room HVAC systems invariably face the following limitations.
  
 
Inefficient pre-filtration
  
 
Excessive Choking of HEPA Filters
  
 
Higher Power Consumption
  
 
Frequent filter replacement
  
 
Downtime losses
  
 
Problem of maintaing Paricle count
 
 
Risk of multiplying bio-load
  
     
 
The most innovative and effective solution to overcome the limitations of conventional clean room HVAC systems is to use Filter On Electrostatic Precipitator (ESP) type Filtration Systems.
  
 
The Perfect Solution
  
 
 
 

The technology is based on the principle of two stage electrostatic air filtration. Fine sub-micron suspended particles are electrostatically charged using high-voltage electric field, which then get attracted and precipitated on opposite charged electrode plates.

  
   
 

Technological advantages :

  
 
Filtration efficiency
  
 
Filter On Electrostatic Filtration Systems offer high efficiency even for small submicron particles which form the maximum percentage of floating and  suspended particles in air. The efficiency of ESP is equivalent to EU9 grade filters.
  
 
Lowest pressure drop
 
 
As compared to any type of filter having EU9 equivalent filtration efficiency, ESP offers very low pressure drop i.e. only 3-6 mm WG.
  
 
Permanent filter
  
 
Since ESP is made of Aluminum plate electrodes, it never requires any replacement over the lifetime (15-20 years). It only requires periodic cleaning. So, no replacement costs at all.
  
   
 
Installations of Filter On Electrostatic filtration systems
  
 
 
 
Filter On M-03 model of required capacity can be introduced as a pre-filteration unit either at fresh air intake end or can be attached to the AHU in the mixing chamber.
 
   
 
Benefits of Filter On Systems
  
 
 
 
 
   
 

Benefits of ESP installation in Clean Room HVAC Systems :

  
 
 
 
  • Improvement in particle count.
  • Reduction in bio-load inside the clean room.
  • Power saving in blower, as well as Air-conditioning system.
  • Reduction in downtime for filter replacements.
  • Reduction in cooling coil maintenance.
  • HEPA filter life can be enhanced by upto 3 to 4 times.
  • Zero replacement cast of prefilters.
  
 
 
   
 
Application areas of Filter On Filtration Systems
  
 
 
 
Health Care
  • Health care facilities.
  • Hospitals - OTs / ICUs.
  • Pharmaceutical manufacturing.
  • Medical devices manufacturing.
  • Biotech laboratories.
  • Food products processing.
Micro Electronics
  • Semiconductor manufacturing.
  • Disk drive manufacturing.
  • Hybrid circuits / IC manufacturing.
  • Hybrid TV picture tube manufacturing.

 
 
   
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Duct cleaning cycle reduced : Since ESP takes care of the major dustload, the need for frequent duct cleaning and the subsequent downtime get reduced . Enhancement in HEPA filters' life : Since ESP absorbs the major particle load in the system, only fractional load is passed on to HEPA filters. Thus, the life of HEPA filters gets enhanced. It is observed that practically theirlife gets enhanced by almost 400% as compared to aconventional system. This means a great saving in replacement costs of HEPA. Reduced downtime for filter replacements : Production shutdowns required for HEPA filter change are reduced leading to lower wastage of production time and increased production. Improvement in particle count : Since Filter On systems offer very high filtration efficiency for submicron particles as compared with any other conventional pre-filtration system (like microvee/5 micron etc.), there is remarkable improvement in the particle count in the room with the same air changes as the air gets filteredwith higher efficiency. Reduction and control of bio-load : ESP works on high voltage electric corona discharge. Because of this, the microbes traveling through this high voltage electric field get killed and the bio-load in the room environment is controlled effectively. On the other hand, in case of media-type filters hazardous bacteria colonies are formed on the upstream side. There is a possibility of the filter getting punctured and all these microbes entering the clean room environment. Filter On systems can very effectively prevent such a situation. Zero replacement cost on pre-filtration : Since ESP is a permanent filter, there is virtually zero replacement cost with Filter On system as pre-filters. Power saving on AC system : As Filter On system is installed just before the cooling coils in the system, depositions on coilfins is reduced to a great extent.Cleaner cooling coils result into better heat transfer efficiency and lower wastage in heat transfer, which ultimately is effective power saving. Lower system pressure drop : Because of very low pressure drop caused by Filter On systems and subsequent reduced choking of HEPA filters, the overall system pressure drop reduces drastically. Thus, there is lesser load on the blower, causing subsequent power saving of the blower motor. It is possible to reduce the number of air changes required to achieve the same particle count with ESP as pre-filter. This further adds to the power saving.-to the tune of 25-30%