E2S Warning Signals has added visual signals to its explosion proof and corrosion resistant GNEx family. Suitable for all Zone 1, 2, 21, and 22 hazardous location signaling applications the GNEx beacons have extended temperature range with IECEx and ATEX Ex d approvals. For high-ambient light or long distance signaling the GNExB2 beacon is available in 10, 15. and 21 Joule variants producing up to 902cd.
Technical Systems (TSI), a division of RAE Corporation, has announced the availability of its Series 35 Evaporative Cooled Chillers. The company says the chillers have been specifically designed to provide-highly efficient cooling for commercial and industrial-duty applications.
Bell & Gossett has released a new line of circulators designed to handle larger and more demanding commercial HVAC and plumbing applications. The ecocirc XL 70-145 takes the head pressure range up to 70 ft. and the ecocirc XL 40-275 offers a new 3-in flange and provides high flow performance up to 275 gallons.
Evapco Inc. has expanded its AT (Advanced Technology) line of factory-assembled cooling towers with more than 200 new models, offering customers improved efficiency and more complete range of selections.
Five sizes of Rosenberg's electronically commutated (EC) backward curved fans are now available with 5.5 kW motors for greater power and efficiency. The new fans feature three-phase motors with nominal input voltages of 230V and 460V. They are 100% speed controllable and are CE, UL, and RoHS approved.
The Alfa Laval CB110 completes the company’s new upgraded range of CB brazed plate heat exchangers. Officials claim the CB range features efficient heat transfer with an extremely small footprint, making them ideal for installations where space is at a premium.
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.