07/08/2002

Spectrally Selective

Energy conservation capabilities of this type of window film

 

Solar vs. Security

When glass breaks, security film holds glass shards intact, preventing them from becoming lethal flying or falling projectiles. In some cases, the glass may shatter but remain intact in its original frame. While most security films are somewhat thicker than conventional films, like dark, tinted, and reflective window film, security films that block heat also block significant amounts of light. V-Kool Inc. markets a spectrally selective security film that also blocks heat while transmitting normal levels of light.

According to the California Energy Commission, 30 percent of a building’s cooling requirements are a function of heat entering through existing glass. Stopping heat at the window is the most effective means of lowering temperatures and reducing HVAC operating cost. In new construction, reducing heat at the window can mean the need for smaller and less expensive HVAC systems.

One excellent solution to overheating is to use clear, spectrally-selective applied window film. This film offers the best ratio of visible light transmission to heat rejection. Spectrally-selective refers to the ability of the film to select or let in desirable daylight, while blocking out undesirable heat. Consider the following :

  • Clarity: The ideal film would be totally clear, yet able to significantly block unwanted solar heat and reduce glare. Spectrally selective film, which blocks heat equivalent to the darkest films, transmits 70 percent of the visible light, and in so doing possesses a clear appearance.
  • Applicability: Both conventional and spectrally selective films can be applied to single pane and insulating fixed glass, windows, and doors. Always identify existing glass and follow the advice of a qualified film installer.
  • According to tests conducted by independent laboratories under the auspices of the Association of Industrial Metallizers, Coaters and Laminators (AIMCAL), applied window film properly installed on insulating glass does not cause seal failure. Accordingly, most window film manufacturers offer an insulating glass warranty in the event of seal failure.
  • Special care: The best applied films require no special care. They can be cleaned just like the surface of glass using no abrasives, just soap and water.
  • Price: Depending on the particulars of the installation and the geographic area, the best spectrally-selective applied window film ranges in price from approximately $9 to $12 a square foot installed. Installed prices are volume dependent; therefore, on larger projects such superior performing films may be installed for less.
  • Aesthetics: Clear spectrally-selective film does not change the appearance of existing glass, allowing its application on the entire building or on as few windows as necessary to deal with a localized overheating problem. For limited applications, spectrally-selective film is competitive in price with conventional film. Given rising electricity and natural gas rates (and the ability of spectrally-selective film to reduce lighting and HVAC needs), the rate of payback for spectrally-selective film is always improving – averaging about four years.
  • Guarantees: The best applied films are guaranteed not to peel, discolor, blister, bubble, or demetalize for at least 10 years on a commercial installation. Look for a guarantee from the manufacturer in addition to any by the installer.
  • Resources: For more information on conventional and spectrally-selective window film, contact the International Window Film Association (www.iwfa.com), Martinsville, VA, and the Association of Industrial Metallizers, Coaters and Laminators (www.aimcal.com), Ft. Mill, SC.
Marty Watts is president and CEO at Houston-based V-Kool Inc. (www.v-kool-usa.com) or (800) 217-7046.
 


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.

 


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.

 


 
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