Case Study Shows Energy Saving Impact of Window Shades

Cooling costs can be cut by as much as 50% through the use of window shading systems, according to a case study conducted by an American shade manufacturer.

Cooling costs can be cut by as much as 50% through the use of window shading systems, according to a case study conducted by an American shade manufacturer.


Draper, Inc. studied energy efficiency by creating a computer model of the same building in 16 cities throughout the United States. The case study shows the proper selection and use of standard, single -color mesh shades reduced the amount of energy required for cooling up to 32 percent. The study shows the greatest savings come from the use of so -called duplex mesh fabrics -fabrics with a darker color on the inside and lighter on the outside. Using these fabrics saved as much as 75% in the study.

The key factors in the amount of savings are sun intensity, daylight hours and energy cost.

Study Criteria
-Fabric: 5% Basket Weave fabric is a charcoal color. 5% Duplex fabric is a charcoal/white color.
-Solar shading: The horizon is presumed to be at a vertical level of 5°. No other obstacles or buildings are taken into account.
-Glazed surface in facade(s): 50% of the facade total surface.
-U -value of glazing: 2.9 W/m˛K (i.e. 0.15" (4 mm) glass).
-Ventilation: The Landscape Office is ventilated with external air through the whole year.
-The air change rate is a constant of 1 Volume/hour.
-Calculation period: One full year. Average of all four facades.
-Base orientation: Average of North, South, East and West facades.

For more information on the study, go to www.draperinc.com/moreinfo/windowshades/green.

Featured Product

PureLink - HCE III TX/RX: 4K HDR over HDBaseT Extension System w/ Control and Bi-Directional PoE

PureLink - HCE III TX/RX: 4K HDR over HDBaseT Extension System w/ Control and Bi-Directional PoE

The HCE III Tx/Rx HDBaseT™ extension system offers full HDMI 2.0 compliance supporting HDR (High Dynamic Range) and 4K@60Hz with 4:4:4 chroma sampling. Featuring PureLink's proprietary Pr©cis codec, a light compression technology, the HCE III can transport Ultra HD/4K, multi-channel audio, and High Dynamic Range (10 bits support) content over a single CATx cable. The HCE III provides HDMI extension up to 130 feet (40 meters) at Ultra HD/4K and up to 230 ft. (70 meters) at 1080p over category cable with embedded multi-channel audio, CEC pass-through, bi-directional RS-232 and IR control, and PoE - all with zero loss and zero noise. The HCE III Tx/Rx also supports Dolby TrueHD, Dolby Digital Plus and DTS-HD Master Audio plus LCPM (up to 192 kHz). Additionally, the low profile "slim box" enclosure design make the HCE III ideal for limited space installation environments, such as behind flat panel displays and video walls.