Continental Fan's TEK Plenum Fans feature TEK backward curved airfoil wheels. The impellers combine precision injection molding techniques with modern high-strength plastics to produce a wheel that is stronger than steel, yet half its weight, according to the company.
Greenheck’s new Utility Set Fan (USF) Series offers multiple levels of construction to meet a wide range of commercial and industrial applications. Constructed from galvanized steel with a bolted frame, USF-200 utilizes a backward inclined centrifugal wheel and is ideal for Class I airflow and pressure applications where clean air is being exhausted. USF-200 capacities range from 50 to 13,700 cfm and up to 5.0 in. wg.
Carrier’s WeatherExpert™ Series now includes six new models from 75- to 150-tons, for a total model line-up ranging from 3- to 150-ton units. The WeatherExpert line boasts Integrated Energy Efficiency Ratio ratings up to 21.0 that exceed the Consortium of Energy Efficiency tier II criteria, which many utilities use for rebates.
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.