10/04/2004

HVAC Insulation Equation

HVAC + fiber glass insulation = silence and efficiency

 

Fiber Glass Duct Board Helps Students Learn

Recent studies have pointed out that children, even those with perfect hearing, demonstrate much lower comprehension than adults when background noise is present. In fact, according to the Acoustical Society of America (ASA), many U.S. classrooms have so much background noise that children could be missing one out of every four words the teacher speaks.

That is why more public school systems wishing to improve indoor environmental quality and maximize students’ classroom performance are choosing fiber glass duct insulations. “We were interested in silent air handling,” explains Steve Brubacher, a representative for the Garfield County, CO, School District. “In the gyms and other areas with oversized ducts (where noise is typically a problem), we have almost no background noise at all from the air handling system.”

As mechanical and energy code requirements multiply, and as building owners demand more comfort and energy efficiency, the long-standing dominance of sheet metal air distribution technology is giving way to a superior solution.

Fiber glass duct insulation has become the choice of professionals for heating, ventilating, and air-conditioning systems in industrial, commercial, and institutional buildings. The reasons are a matter of economics and comfort, since fiber glass duct insulation reduces energy usage, increases the system’s effectiveness, and greatly improves a building’s acoustical environment.

Energy Savings

When properly specified and correctly installed, fiber glass air handling insulations and ductboard products significantly contribute to complying with indoor environmental quality (IEQ) requirements, including energy performance. They deliver conditioned air closer to the design temperature, eliminating the need to extend heating or cooling cycles, and reducing fan requirements – thereby reducing energy costs.

New standards enacted this summer for state-owned buildings under the federal Energy Policy Act (EPAct) increase energy-efficiency requirements by about 6 percent over the previous standard, while applying the new standards in alterations and renovations increases total energy savings by as much as 50 percent. Fiber glass duct insulation has extremely low air leakage and is an excellent tool for complying with the new standards and reducing energy consumption.

Increased Comfort

A bare sheet metal duct carrying 55-degrees-F.-cooled air through an 80-degrees-F. plenum space can gain almost 10 degrees F. for every 100 feet it travels. In contrast, air carried the same distance through a duct lined or fabricated with just 1 inch of fiber glass insulation gains less than 2 degrees F.

Less Noise

Fiber glass duct insulation controls and reduces noise. Traditional sheet metal air ducts can transmit and even amplify sounds from the air handler or from occupants in other parts of the building. Fiber glass, however, dampens and absorbs sounds so that the indoor environment is easy on the ears. According to the Noise and Vibration Committee of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE): “Fiber glass duct systems insulation continues to be the most cost-effective solution to noise control in most HVAC air duct systems.”

Making the Right Choice

There are three broad categories of duct insulations available, providing a range of benefits. External insulations, including flexible duct wrap or rigid board insulation, are applied to the outside of the duct and serve as vapor retarders and thermal insulators. While they offer some improvement in efficiency, they have no impact on acoustical performance. Fiber glass duct liners are applied to the interior of duct surfaces during the duct fabrication process and provide excellent noise absorption characteristics and high thermal (R-value) performance.

Fiber glass duct board is made of rigid, high-density fiber glass with a tough aluminum exterior that combines thermal and acoustical insulation in a structural board package, completely eliminating the need for expensive sheet metal duct. Fiber glass duct board is taking over as the choice for builders who face the volatile cost of sheet metal. Installers prefer fiber glass duct board because it may be fabricated more quickly on-site. And, because duct board is readily available at stable prices, building owners can predict and control construction costs.

Eric G. Schakel is market manager, air handling insulations, for Johns Manville (www.jm.com), based in Denver.

 


Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.


When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality.

We Can Help You Reduce Energy by 30%

Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
CLICK HERE to find out how.

 

Add highly responsive multi-zone comfort to any building project, in any climate. Our CITY MULTI H2i R2- and Y-Series VRF systems give you flexibility to fit the needs of any building. Enjoy 100% heating capacity at 0°F outdoor ambient, and 85% heating capacity at -13°F outdoor ambient.  For more information, log on to www.mitsubishipro.com

 


Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.


Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.

 

Replace core drilling with Connectrac In-Carpet and On-Floor Wireways, the proven connectivity solution in open interior spaces of all kinds. These elegant low-profile wireways are great for AV / telecom connectivity wherever it’s needed.

Bluebeam® Revu® simplifies digital facilities document management from design review to leveraging as-builts, maintenance manuals and O&Ms submittals.


Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.


When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality.

We Can Help You Reduce Energy by 30%

Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
CLICK HERE to find out how.

 

Add highly responsive multi-zone comfort to any building project, in any climate. Our CITY MULTI H2i R2- and Y-Series VRF systems give you flexibility to fit the needs of any building. Enjoy 100% heating capacity at 0°F outdoor ambient, and 85% heating capacity at -13°F outdoor ambient.  For more information, log on to www.mitsubishipro.com

 


Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.


Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.

 

Replace core drilling with Connectrac In-Carpet and On-Floor Wireways, the proven connectivity solution in open interior spaces of all kinds. These elegant low-profile wireways are great for AV / telecom connectivity wherever it’s needed.

Bluebeam® Revu® simplifies digital facilities document management from design review to leveraging as-builts, maintenance manuals and O&Ms submittals.


 
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