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FASTRACK Features
Reducing HVAC Noise With Duct Liner
By STEPHANIE AYERS, Evonik Foams Inc., Allen, Texas; JEFFREY L. FULLERTON, INCE Bd. Cert., LEED AP BD+C, Acentech Inc., Boston, Mass.; and STEVEN H. MILLER, CDT, Chusid Associates, Tarzana, Calif.
In HVAC systems, ducts distribute more than air; they also distribute noise produced by fans. Duct liners were developed in part to absorb noise before it emanates from ductwork. Designers apply different thicknesses and lengths of duct liner to reduce noise to various levels. Understanding the acoustical benefits of duct liners and the available choices in liner materials helps in specifying a system that is efficient and effective, both in terms of noise performance and HVAC performance.
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FASTRACK News
2011 Version of Green Standard Available From ASHRAE, USGBC, IES
ASHRAE recently announced the publication of ANSI/ASHRAE/USGBC/IES Standard 189.1-2011, Standard for the Design of High-Performance, Green Buildings Except Low-Rise Residential Buildings.
Melink Wins 2012 AHR Expo Product of the Year Award
Melink Corp.’s Intelli-Hood controls for commercial kitchen hoods, which reduce exhaust- and makeup-fan speeds during idle, non-cooking conditions, providing fan energy savings of up to 90 percent and conditioned-air savings of up to 50 percent, were named Product of the Year during the 2012 International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo), held Jan. 23-25 in Chicago.
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Xylem's System Syzer Tool Available as Free Mobile App
Water-technology provider Xylem Inc.’s popular Bell & Gossett System Syzer tool for calculating flow rate and pressure drop in piping systems is now available as a free mobile application for iPhone and iPad.
'Gen Y Guy' to Kick off Mechanical Systems Week 2012
Jason Ryan Dorsey, perhaps better known as "The Gen Y Guy," a best-selling author and award-winning entrepreneur with a unique talent for teaching ready-to-use actions and creative strategies that quickly increase cross-generational performance, will share his insights on generational differences in the workplace during the opening keynote event for Mechanical Systems Week 2012, to be held Sept. 19-21 in Chicago.
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