Laboratory Exhaust System Myths and Facts: Design Considerations That Save Energy

Anthony Rossi, Greenheck Fan Corporation

There is much discussion today about deviating from proven and safe laboratory exhaust fan systems in an attempt to save fan energy. Some of these concepts have merit, while others lack an understanding of how exhaust fan systems operate under varying conditions and how they must integrate with the laboratory space ventilation components to maintain containment and safety. In addition, some fan system schemes portray false energy savings.

This presentation will discuss and compare several laboratory exhaust ventilation schemes, their impact on containment, system effects, and controllability, along with the correct method to determine fan energy efficiency and certification of exhaust system performance.

Biography:

Anthony (Tony) Rossi, is director of laboratory exhaust systems for Greenheck Fan Corporation in Schofield, Wisconsin. Mr. Rossi has a Bachelor's degree and a Master's degree in mechanical engineering. He also has more than 30 years of experience in the industrial ventilation industry, the past 15 of which have been dedicated to laboratory ventilation. A member of ASHRAE TC-9.10, Laboratory Systems, Mr. Rossi has served on both ASHRAE and ARI standards development committees. He is also the Education Committee Chair for ASHRAE Central Indiana.