Kohler Power Systems has aded two new models to its line of diesel-powered mobile generators. The 90REOZT4 and 120REOZT4 offer flexible options to meet the needs of end users. The Tier 4 Final generator models are built to withstand the elements, run long hours in prime and standby applications, and meet all EPA emission standards, said company officials.
Greenheck’s new ceiling exhaust fan Models SP-80 and SP-110 feature energy efficient EC motor technology. According to the company, they have been designed for nearly silent operation. An adjustable low-cfm setting allows precise adjustment to prevent over-ventilating and maximize efficiency, while an adjustable time delay sets how long the fan will run on high speed before returning to a continuous lower speed.
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.