MacroAir says it has improved on high volume, low speed (HVLS) fan technology with its new product line called AirVolution-D. MacroAir’s AirVolution-D is powered by a motor technology called D-Drive, which is a compact electric motor capable of handling the consistent torque requirements of a 24-ft diameter industrial fan. At the heart of AirVolution-D is a motor design which the company says delivers 50% more mechanical horsepower and 75% more wind power than current HVLS fans on the market.
A few are more familiar and worth a reminder, while some are pretty sneaky. Others may have gotten there before the first occupant. In any event, any “sustainable facility” can sustain IAQ damage without attention to these sorts of risks.
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.
Many engineers tend to avoid or delegate the nitty gritty of a ground source heat pump system, from soil moisture effects to building system (im) balance. It's time for designers to get in the loop. Learn more about Grounded In Reality in the December issue. Other topics in the December issue include health care HVAC, Boilders, check out the Back2Basics, and more.