VORTEX ll®
Bi-Stable Vortex Fume Safety Cabinet

Benefits

Besides providing a highly improved safety device to the researcher, and saving the owner considerably more energy than a VAV system, the following is a list of some of the other benefits of this new breakthrough technology:

1. The 70% first cost savings in the mechanical system design literally makes the fume hoods free.
   
   
2. The operational energy cost savings afforded by the VFV fume hood is equivalent to operating a VAV fume hood with the sash closed all the time.
   
   
3. Hourly air change rates are reduced to a level that matches the normal cooling demands. Space temperature conditions are improved and worker complaints are eliminated.
   
   
4. To achieve the energy savings promised with VAV systems, sashes must be closed and complicated controls must function at all times. VFV requires no user interface, fume hood sashes can be in any position and it is based on simple and dependable constant volume control. VFV eliminates risky diversity factor designs.
   
   
5. VFV fume hoods require 1/4 the amount of static pressure of conventional fume hoods which translates into the quietest fume hoods available.
   
   
6. A standard 6' VAV fume hood requires a 12" connection, while the VFV bi-stable vortex fume hood requires only a 10" connection.
   
   
7. Mechanical space can be reduced by at least 50%, which improves the net to gross area efficiencies. The smaller amount of mechanical equipment translates into lower supporting structural members and costs.
   
   
8. The VFV fume hood controls and alarm system are factory installed, prewired, and commissioned with an exhaust manual balancing damper and single source responsibility. The VAV system, however, is field installed, wired, and commissioned with multiple source responsibility.
   
   
9. Constant volume systems are easier to balance and commission than the elaborate variable volume systems presently employed.
   
   
10. The VFV fume hood alarm monitors fume hood performance by monitoring the strength of the bi-stable vortex. It's like equipping every fume hood with a tracer gas test operating on a continual basis. This is a priceless feature for fume hood users and their families.