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Commercial buildings consume around 20% of the total energy utilized in
the U.S. The use of shading devices in buildings has the potential to
reduce building energy consumption while also providing a more desirable
indoor environment for building occupants. Similarly, lighting device
controls help reduce lighting energy consumption as well as internal
loads. However, there is lack of full-scale experimental testing of
integrated dynamic shading and lighting controls. This study presents
full-scale experimental testing data to quantify these energy and
daylighting impacts. Testing was performed utilizing two different
control strategies, in three different orientations under three
different types of sky conditions. The shading device was also used in
conjunction with two different types of glazing. An average of 25.4%
cooling energy savings and 48.5% lighting energy savings was achieved.
Visual discomfort evaluated using Simplified Daylight Glare Probability
was prevented more than 85% of time during occupied hours. Improvement
in daylight levels evaluated using Useful Daylight Illuminance was also
achieved. Finally, analysis of the relationship between the illuminance
level measured at the work plane and a ceiling illuminance sensor is
performed to translate the real-world applicability of shading device
controls.

paper can be downloaded until April 17, 2020 here: https://authors.elsevier.com/c/1aeXM1H~c~BKw2