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Isis® from Big Ass Fans is the bigger, better solution. It is the world's only fan engineered to dramatically improve circulation.
FASTRACK Features
Efficiency and Cost Benefits of Controls Retrofits
By STEVE CONNOR, Cleaver-Brooks, Milwaukee, Wis.
One-third of a facility's energy bill can be directly attributed to the boiler room. Replacing an older boiler system is one way to achieve energy savings. Retrofitting is another. If retrofitting is the course of action, then it is important to identify the areas most likely to yield efficiency gains. The first area to consider is the combustion-controls system. New developments in boiler controls are creating opportunities for substantial efficiency gains. This article discusses options to help an existing boiler system produce measurable efficiency increases and fuel-cost decreases.
FASTRACK News
AHR Expo Exhibitors Optimistic About 2012
Despite widespread concern about the global economy, HVACR manufacturers appear optimistic heading into 2012. According to a recent survey of more than 1,000 International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo) exhibitors from around the world, 59 percent expect a "better year" in 2012, while 13 percent expect a "much better year." Twenty-four percent expect sales to be the "same," while only 4 percent expect a "worse year."
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AHR Expo Educational Program Features 100-Plus Presentations, Workshops, Certification Exams
A variety of educational sessions, workshops, and certification programs designed to help HVACR professionals perform their jobs more effectively will be offered during the 2012 International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo), to be held Jan. 23-25 at McCormick Place in Chicago.
Winners of 2012 AHR Expo Innovation Awards Announced
International Exposition Co. (IEC), producer and manager of the International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo), recently announced the winners of 2012 AHR Expo Innovation Awards.
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Rick Fedrizzi to Discuss the Role of People in Green Building at the 2012 Carrier Global Engineering Conference Rick Fedrizzi, president and CEO of the U.S. Green Building Council (USGBC), has been named a keynote speaker for the 2012 Carrier Global Engineering Conference – March 18-20 at Caesars Palace in Las Vegas. His address will focus on sustainability and the essential role people play in implementing sustainable building design using advanced technologies. Fedrizzi will emphasize how that role affects the way we build and train for the future. Click here for more.
Mechanical Systems Week 2012 Set
HPAC Engineering is joining forces with Contracting Business and CONTRACTOR magazines to present Mechanical Systems Week 2012 Sept. 19-21 in Schaumburg, Ill.
2012 AHR Expo Product Review |
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Variable-refrigerant-flow system The Multi V III variable-refrigerant-flow (VRF) commercial air-conditioning system for large-scale facilities such as commercial office buildings, hotels, hospitals, and schools offers Air-Conditioning, Heating, and Refrigeration Institute-certified ratings, fast-response cooling, and a space-saving footprint. The VRF technology improves energy efficiency by allowing occupants to choose whether to air-condition or heat only the zones in use. The units feature an inverter scroll that offers a more compact size for the same capacity output with greater reliability in cold climates compared with previous Multi V systems.—LG Electronics
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Large-diameter fans Low-speed fans in 6-ft to 24-ft diameters generate year-round, energy-efficient air circulation. The Isis fan is designed and engineered to dramatically improve air circulation in large areas, including industrial, agricultural, and commercial spaces.—Big Ass Fans
Variable heat pump with auxiliary gas heat The Rebel packaged rooftop system combines variable-heat-pump technology with auxiliary gas heat and a variable-inverter scroll compressor, while functioning as a variable-air-volume heat-pump unit down to 3 tons. The electronically commutated motors used on the fans allow for variable-speed operation. The units are available in 3- to 15-ton sizes, offer a modulating hot-gas-reheat option, and operate efficiently in colder weather. As a dedicated-outdoor-air system, the units provide energy-efficient makeup air for 100 percent outdoor-air applications.—Daikin McQuay
Constant-flow venturi valve Available in aluminum or stainless steel, the VV Series venturi valve is ideal for controlling airflow for supply, return, or exhaust ducts based on the cubic-feet-per-minute flow set by the actuator. The pressure-independent valve maintains a constant airflow at a specific actuator position over a range of 0.6 in. to 3 in. WC. Diameters range from 6 in. to 4 in., and both the aluminum and stainless-steel valves can be specified with Heresite coating and/or sound insulation.—Triatek
Piping groove system The Advanced Groove System is the only two-piece coupling on the market available in diameters up to 60 in. The system offers fast and simple installation over couplings featuring multisegment housings. Pipe joined by the groove system handles high- end loads, and has a pressure rating of up to 350 psi with a nominal three-to-one safety factor.—Victaulic
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