Schaffner EMC has introduced its ECOSine® 60 Hz Passive Harmonic Filters. The company says the filters remove harmful harmonics of a pre-determined order to increase the reliability of supplied power, and thus extending the service life of downstream components. With plug-and-play convenience and compact dimensions, the product can be more easily installed and commissioned.
Ziehl-Abegg has introduced its new ZAvblue impeller, which the company claims is up to 20% more efficient than other standard products. The company also says the bionic design of the new impeller requires significantly less space in the customer device. Equipment designers can now generate the current airflow with impellers that are one size smaller.
Baldor Electric Company is offering a new addition to its gear reducer product line — the Baldor-Dodge® Vertical GearMotor. The company says the Vertical GearMotor offers a cost effective alternative to the common low-speed vertical pump drive technologies, which use large, high-pole count vertical motors or a combination of horizontal motor with a right angle gear reducer. The Vertical GearMotor is built on a standard low-pole count induction motor platform utilizing Dodge planetary gearing. This results in a smaller, lighter, highly-efficient drive package, according to Baldor.
Utilizing a total energy core, Greenheck’s new MiniCore energy recovery ventilator provides preconditioned fresh outdoor air for commercial applications ranging from 300 to 1,000 cfm. The total energy core is constructed of a specially processed hydroscopic resin material layered in a cross-flow corrugated structure that separates the supply and exhaust air, ensuring only fresh air is introduced into the indoor space.
Tate Airflow is introducing an upgrade to the existing line of SmartAire® automatic VAV dampers. The company says the new SmartAire® MZ offers four independent control zones, a simplified user interface on the unit and on screen, and greater integration with existing DCIM and BAS systems.
Johnson Controls has introduced the Quantech Air-Cooled Chillers. The company says the chillers offer up to 50% annual energy cost savings compared with the replaced chillers, have a low lifecycle cost, meet or exceed ASHRAE standards, and help earn LEED credit with a low refrigerant charge. Three models make up the Quantech chiller line. The QTC2 (15-50 tons) provides chilled water for all air conditioning applications using central station air handling or terminal units. The state-of-the-art installation uses tube and fin condensers, brazed plate evaporators, and scroll compressors.
The Drives & Motion Division of Yaskawa America has introduced the Z1000U HVAC Matrix Drive. The company says the drive provides extremely low harmonic distortion in a space-saving design, along with the same HVAC-specific features as the standard Z1000.
The Metraflex Company has developed the Seismic BreakAway Coupling. The company says the product is a solution for hanger rods that are too short and do not allow for the full-rated movement of seismic expansion loops during seismic events.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.