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Nailor Airwaves

Nailor Airwaves is your source for content on relevant topics concerning Nailor Industries, Inc. and the HVAC industry. New product releases, case studies, product & project spotlights, employee interviews, trade publication articles, and general announcements are some of the content types you can expect to find in the Nailor Airwaves.

VAV Equipment Selection: Fan Powered Terminal Units

April 6, 2021

In many VAV systems, the exterior zones will utilize fan-powered terminal units. When compared to a single duct terminal unit, the fan-powered versions have a fan that enables the induction of plenum air into the airflow. During heating, the supplied conditioned air can be reduced to the minimum ventilation rate and the heating airflow is supplemented by induced plenum air. The introduction of the fan adds a few more variables to consider when selecting the equipment.

Parallel vs. Series

Before selecting the individual terminal units,...

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VAV Equipment Selection: Single Duct Terminal Units

March 23, 2021

Once the building cooling/heating load has been calculated and the VAV system has been laid out, the next step is for the engineer to select the exact sizes, models, and configurations of the terminal units that will deliver the comfort to the space. For both the single duct and fan powered terminal units, several variables must be considered including unit capacities, sound, type, heating requirements & type, and manufacturer.


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VAV System Design Considerations

March 2, 2021

A mechanical engineer must consider several variables and equipment types when designing a VAV system.  This includes the load on the space, the static pressure in the ductwork, the types of terminal units, and the occupancies in the space.  The engineer must also consider how the terminal units are going to be controlled.  These decisions must weigh the initial cost with the long-term energy efficiency. Using a theoretical office building, we will walk through the general design process and the decisions the engineer must work through to arrive at a final...

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VAV System Components

January 21, 2021

Occupant comfort is critical for the building owner’s return on investment.  Chilled Water VAV systems have proven to deliver the highest level of occupant comfort, including thermal and acoustical satisfaction.  Delivering comfort requires the cooperation of several pieces of equipment. When set up and controlled properly occupant satisfaction can be optimized along with the energy consumption.  A major study, ASHRAE RP-1515, proved that optimizing occupant comfort coincides with a more efficient use of energy for several buildings. Understanding how the...

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VAV Systems Deliver Comfort

January 12, 2021

When designing a commercial HVAC system that will serve a diversity of spaces, selecting a VAV air side system has proven to be the best choice. A mechanical engineer has two goals for their future occupants, deliver optimal comfort at the lowest possible energy usage; in that order.  When compared to other options, the VAV System wins on both fronts.

Comfort equals Profits

Fundamentally, the goal of an office real estate developer is to construct a building who’s financing and operational costs will be less than the rent the building...

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