- Fan Powered Chilled Water

A large portion of the energy exerted by an HVAC system comes from conditioning the outside air required by the mechanical code, which typically reference the ASHRAE 62.1 standard. Increasingly, this is performed separately from the building HVAC system by a Dedicated Outside Air System (DOAS). When designing a DOAS system, one decision is how to distribute the air to the space. In my previous Ventilation Strategies article, I highlight a few methods for ventilation distribution.

Unique to Nailor, the “Stealth^™” Induced Air Dissipative Silencer option provides maximum acoustic attenuation by reducing radiated sound power levels. The medium insertion loss design does not however affect fan performance.  When units are installed above the occupied space, the addition of the silencer reduces the radiated sound level in the occupied space by a significant 5 NC. It is available as standard with Fiberglass Media. A Mylar/Spacer Liner option is also available for IAQ sensitive applications.