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Glossary of Terms

Air Volume:: Rate of airflow, normally expressed in cubic feet per minute (CFM).

ASHRAE:: American Society of Heating, Refrigerating, and Air Conditioning Engineers, a professional organization that sets industry standards for fume hood testing procedures.

Auxiliary Air:: Supply or makeup air delivered external to the chamber of a fume hood to reduce air consumption.

Blower:: Air moving device (or fan) consisting of motor, impeller, and scroll.

CFM:: Cubic Feet Per Minute, a unit of measurement of air volume.

Containment:: Extent to which fumes are confined within the hood compartment.

Damper:: Device installed in duct to control air volume.

Exhaust Volume/Parameters:: Quantity of air exhausted by the fume hood; quantity of air required to maintain desired face velocity, expressed in cubic feet per minute (CFM).

Face Velocity:: Speed of air moving into the fume hood through the face opening, measured in feet per minute (FPM).

FPM:: Feet per minute; measurement of air velocity.

Negative Pressure:: Pressures lower than one atmosphere.

Positive Pressure:: Pressures higher than one atmosphere.

Static Pressure:: Air pressure, or resistance, in fume hood or duct, expressed in inches of water.

Variable Air Volume (VAV):: Type of fume hood exhaust system that typically maintains constant fume hood face velocity by adjusting blower motor speed or a balance damper in response to changes in sash position.

Velocity:: Speed of air, measured in feet per minute (FPM).

Velocity Pressure:: Force per square inch applied by moving air.

Volume:: Quantity of air, usually measured in cubic feet per minute (CFM).

Work Surface:: Top material; area in fume hood where apparatus rests and where work takes place.

Blowers Exhaust

Our Exhaust and Blower line:

Materials Science International, Inc.

"Our subject collector and Down Draft Tables purchased from your company have been installed and have been running for four weeks. MSI's Management as well as out Cleaning Room personnel are very satisfied with the manner in which your equipment has been performing. The noticeable lack of dust not only in the Cleaning Room but throughout The Production Floor as well is a very good sign that your equipment is performing as you had indicating that it would.

You may recall that we had tried three (3) other methods of controlling the float dust and particulate that is generated during the sanding operations in our Cleaning Room to no avail. All three methods were total failures.

We here at Material Science International, Inc could not be more satisfied with your equipment and would like to take this opportunity to thank you and your team for that hard work and dedication exhibited on this project.

Materials Science International, Inc

William F Bailey

Executive Vice President

SouthCoast Welding & Manufacturing

"I just wanted to personally thank you for the great service we received from Avani Environmetntal. Not only was everyone at Avani very professional but they were very pleasant to deal with and Provided great service. All of the welding booths arrived on schedule for our grand opening of the welding school in April. Everyone at Southcoast was very impressed with the quality abnd overall appearance of the weld booths.

Whenever I give anyone a tour of the weld school form our customers to the representative of the State of California Employment Training Panel they all comment on how great the booths look. The quality of the weld booths were much better than what I have seen at other welding schools. The booths and ventilation system were very easy to assemble and everything fit together perfectly.

Since the opening of our welding school in April we have certified over 25 welders. I want to personally thank you and I hope to add another 10 welding booths by the end of this year

SouthCoast Welding & Manufacturing

Patrick Shoup

President

Laboratories

Avani Environmental Intl. Inc has a full line of Stainless Steel Fume Arms for easy maintenance and wash-down. Avani Environmental provides products for fume extraction or filtration. If you need customized Stainless Products please contact an Avani Representative.

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Avani Environmental Intl. Inc.^®

6541 Meridien Drive Suite 125

Raleigh NC 27616

phone: (919) 570-2862

fax: (919) 570- 2863

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Glossary of Terms