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.
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.