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FAQs – Frequently Asked Questions

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Q: Can mist collection equipment handle high-pressure coolant situations?

Q: What is CFM?

Q: What causes resistance to air flow?

Q: What is FPM?

Q: What if my shop has many open and/or old machines that do not lend themselves easily to ducting?

Q: What are the typical types of mist collection equipment?

 

 

 

 

 

 

 

 

 

 

 

 

Q: Can mist collection equipment handle high-pressure coolant situations?

Yes. The patented EliminatÝr was designed with High Pressure (HP) coolant in mind. Also ensure that the mist collection system is sized adequately (CFM) to draw mist to the collector and away from your door opening.

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Q: What is CFM?

CFM = Cubic Feet Per Minute. This is the volume of air that can be moved. CFM of a piece of air filtration equipment is based on the capacity of the blower at a specified pressure or resistance.

Example: 2000 CFM at 1" of WG means that you can expect 2000 CFM from your system with a maximum of 1" of resistance. The more resistance through your system, the lower the Actual or Delivered CFM.

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Q: What causes resistance to air flow?

Filters in your collection system provide resistance based on the size, efficiency and material of the filters. Among other factors, resistance in the system is caused by the type of ductwork, the material the duct is made of, the length of the duct and how many elbows and turns the ducting has.

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Q: What is FPM?

FPM = Feet Per Minute. This is the velocity (speed) that air is moved.

a. Conveying Velocity is how fast air is moved through the ductwork.

b. Pick Up Velocity is how fast the air moves at the face of the duct hood or duct intake.

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Q: What if my shop has many open and/or old machines that do not lend themselves easily to ducting?

Though "Source Capture" (ducting to the source of the mist/smoke/dust) is preferred, at times this is impractical or cost prohibitive. For this type of condition, it is possible to "Free Hang" (hang air filtration equipment from your ceiling or walls with no ductwork attached) to filter the ambient air. This is not a perfect solution and it is significantly less efficient than the "Source Capture" method, but also significantly better than doing nothing. Note that size and the number of units required is based on the type and amount of contaminants in the air.

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Q: What are the typical types of mist collection equipment?

a. Media Type: This type of equipment comes with cleanable and/or replaceable filters manufactured from a variety of materials and in a variety of efficiencies. In addition to mist collection, these can frequently be modified to meet unique conditions including for the capture and removal of smoke and fumes and odors and dust.

b. Centrifugal Type: This type of collector has a finely balanced rotating drum that acts as the blower as well as filter. It is compact in size, but typically is limited to about 1200 CFM maximum and frequently requires prefilters due to type of coolants being used and the type of application (i.e.: iron machining; aluminum machining; grinding).

c. Electrostatic Precipitator (ESP): The ESP is highly efficient for small particulate, such as smoke, but requires a high amount of maintenance to maintain it's air cleaning efficiency, otherwise it simply exhausts dirty air back into your plant environment. These operate by ionizing particles (mist, smoke, dust) and collecting the particles on a collection cell.

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Have more questions? Contact us.

 

 


JJG Air Solutions Engineering - JJG Enterprises
P.O. Box 403 Hales Corners, Wisconsin 53130-0403
Phone (414) 427-9585 - Fax (414) 427-0085