The ABB Low Voltage Products division is offering a new line of heavy duty safety switches for commercial and industrial applications, meeting the necessary UL98, CSA, and NEMA KS-1 standards. The 600V and 200kA rated switches use the same globally rated bodies as ABB’s rotary-style switches, providing increased performance, reliability, and safety to the heavy duty market segment, according to ABB.
Groschopp Inc. has launched a family of brushless DC motor controls for its entire product line of BLDC motors and gearmotors. Designed to provide commutated power and variable speed control, the company claims these closed loop controls provide excellent speed regulation over a wide range of loads.
A new selection of test and measurement equipment called Digi-Sense™ has been introduced by Davis Instruments. The equipment includes temperature, humidity, airflow, and light meters as well as manometers in an expanding line of products. The company says the tools are rugged enough for rigorous use and arrive precalibrated for time and cost efficiencies.
E Instruments has unveiled its new AQ Comfort tool for IAQ monitoring. The all-in-one Instrument provides the indoor air quality monitoring and real-time data logging for IAQ analysis in homes, schools, offices, and more.
Baldor Electric Co.’s Dodge® Hydraulic ISAF bearing is now available with higher load ratings. The Hydraulic ISAF pillow block bearing with a patented hydraulic mount and dismount system is now available with higher capacity, 231 series spherical bearings, and is interchangeable with industry standard SDAF housing dimensions.
Bitzer is now offering a range of compressor units for use with the natural refrigerant ammonia (R717). The Bitzer ammonia compressor packs (ACP) are available with a capacity range of 100 to 450 TR. The modular compressor units comprise up to three compressors. For higher capacities, as many as three compressor packs can be connected (up to 9 compressors) and connected to a single controller, increasing the overall capacity up to 1,200 TR. The company says this is ideal for industrial systems.
Baltimore Aircoil Company has launched the new Series 1500 Cooling Tower. The company says its Series 1500 Cooling Tower is one of the most serviceable units without compromising performance and fit. The cooling tower has capacity increases of up to 13%, new configurations almost doubling the tonnage range, reduced sound solutions, 26% reduction in annual maintenance costs, and reliable year-round operation.
Continental Control Systems has introduced the CTRC Rogowski coil current transformer. The device is designed to simplify installations to meet the increasing demand for accurate current measurement on conductors where traditional split-core and solid-core CTs are difficult to use. With its flexible design, the CTRC is ideal for large bus bars and irregular-shaped conductor bundles. The new coil offers a small, flexible profile, enabling it to be used on conductors in tight spaces where rigid CTs won't fit.
Navien’s new NPE-S series condensing tankless water heaters have a rated efficiency of 0.98EF. The company claims the series is ideal for commercial and residential water heating applications and is available in three models with maximum inputs from 150,000 to 199,900 Btuh and maximum flow rates from 8.4 to 11.1 gpm.
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.