The Lighting Controls Innovation Award was created in 2011 as part of the Illuminating Engineering Society’s Illumination Awards program, which recognizes professionalism, ingenuity and originality in lighting design. LCA is proud to sponsor the Lighting Controls Innovation Award, which recognizes projects that exemplify the effective application of lighting controls in nonresidential spaces.
This month, we will explore the role that a robust lighting control solution plays in a LEED Platinum education facility. Lighting and control design by Kamal Parmar, P.Eng. of SMP Engineering. Photography by Ryan Hetherington-Keys and Kamal Parmar. Lighting control system by OSRAM Encelium.
This state of the art undergraduate teaching facility offered design challenges to create a highly sustainable building with a warm comfortable environment for the cost of a conventional building of this type. Energy savings included natural light, using large perimeter glazing, centralized clerestory; energy efficient luminaires, internal and external shading, and sensor controls.
Shading systems consists of light shelves, internal power shades and vertical automated shades that track the rotation of the sun on the southern exposure and static shades on the east and west exposures.
These combined strategies are integrated into the controls system and allow maximum light penetration with minimal direct glare.
Control strategy utilized a lighting control system that is integrated into the building management system. With a variety of user’s occupying the space at different times of day, control flexibility requirements are diverse.
Control components included addressable lighting controls, occupancy sensors, daylight sensors, override switches and time controls.
A typical classroom control strategy includes direct/indirect T5 Linear pendant mounted perpendicular to the glazing. Row mounting starting with 4’ length 2L switched on off, and balance of row 8’ length 2L switching alternating single lamps. Four levels of illumination.
Illumination of the Atrium with indirect natural daylight and indirect HID electric light reflected of the save architectural reflected brought the light further into the space. Controls strategically placed on different levels controls the luminaires on that level.
The lighting design is based on IES /ASHRAE guidelines for LEED Platinum. The average connected lighting power density achieved is less than 0.45 w/sf, with controls 0.15 w/sf. LPD’s are well below ASHRAE 90.1 requirements.
The controls were coordinated with architectural and mechanical systems to optimize the use of materials to meet the budget. The system was designed to be is user friendly and generate energy reports.