Focus on: Lighting controls and codes

摘要

According to the U.S. Dept. of Energy (DOE), 40% of pri-mary energy consumed in the United States can be attributed to the building sector. Of that 40%, commercial buildings accounted for 46% while homes totaled 54%. In order to reign in the increasing energy consumption of commercial buildings, the DOE and ASHRAE signed a Memorandum of Understanding establishing a goal of 30% energy savings for 90.1-2010 compared to 90.1-2004. The new ASHRAE 90.1-2010 has been updated targeting the 30% energy savings goal. For lighting, which typically accounts for 30% to 40% of a building's energy use, changes include: automatic daylighting controls, parking garage controls, and adjusted lighting power densities (LPD).