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DEGELMAN, Larry O. Zero general illumination (zgi): an energy, comfort, and lighting performance evaluation using an energy simulation model for sustainable office building design. PLEA (Passive and Low Energy Architecture), artigo técnico.
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Abstract

This paper investigates the viability of zero general illumination (ZGI) in office buildings. In this scenario, there are no ceiling mounted lighting fixtures; rather, indirect partition mounted lights provide modest ambient illumination, and task lights at the workstations provide the workplace illumination. Corridor lighting is provided by wall mounted direct/indirect lights. Motion sensors within each work area assure that lights are not left on during unoccupied times. The concept reduces internal heat loads, giving rise to more hours of comfort and reduced space cooling and lighting energy costs. This concept was initially investigated by architecture students through a class assignment in environmental control systems. Adequate lighting levels in the office spaces were verified through field surveys. Later, a case study building utilizing this concept was used to validate the concept. Using real data from the case study building as input to an energy simulation program, the annual and life-cycle energy and cost savings are projected.
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