Solar heat gain through existing glass was a serious problem
at the Washington, D.C. headquarters of the American Institute of Architects
(AIA).
Few realize that a facility’s windows are the biggest
contributor to heat gain and the need to run HVAC systems. Block heat from
entering windows and it is possible to run HVAC systems less and reduce the
cost of energy.
Large expanses of glass raise temperatures and
air-conditioning bills. Solar heat gain can lead to the following problems:
• Inability to use
space near windows.
• Frequent use and
replacement of HVAC equipment.
• Fading and heat
damage to furnishings and carpets.
• Uncomfortable
building occupants.
V-Kool is the AIA’s choice to reduce overheating. Tinted or
mirrored window films block unwanted heat but reduce visible light and darken
interiors. At the AIA building, the gray tint of the existing glass meant that
the application of a tinted film would dramatically reduce light levels and
change the appearance of the building. Neither option was acceptable.
Instead, the AIA selected V-Kool transparent, almost
colorless spectrally selective applied window film. Twelve thousand square feet
of V-Kool was applied to the entire building, providing the best ratio of
visible light transmission to heat rejection without changing the appearance of
the building in any way. Spectrally selective window film by V-Kool, Houston.
Circle 212.
