Ashrae 90.1 2010 Lighting Pdf3/21/2021
Most states are expected to adopt ASHRAE 90.1-2010 in whole or in part, adopt the 2012 version of the International Energy Conservation Code (IECC) that references Standard 90.1 as an alternate compliance standard, or develop their own unique code, such as California Title 24.Thirty-seven states are expected to comply based on similar past rulings.
Both the 2010 and 2013 versions of ASHRAE 90.1 have changes, including tables, definitions, and sections, with the 2013 version being the most stringent. Energy-savings calculations compared to ASHRAE 90.1-2004 were improved by approximately 25, including plug loads, and approximately 31 for lighting alone. The DOE liked these improvements, endorsed them, and notified the states that they should adopt Standard 90.1-2010 (or a code that DOE sees as equivalent) by October 2013. Commissioning elements including design documentation, and commissioning are now requirements. Projects that are retrofitting light fixtures for which 10 or more of connected lighting load is replaced must satisfy the lighting-power density (LPD) requirements and automatic-shutoff provisions. Requirements for daylighting and associated lighting controls were added. Many other lighting control requirements were added including independent functional testing of lighting controls, occupancy, vacancy controls, exterior lighting, and whole-building shutoff controls. The most important of the 30 total addenda to the 2010 version are. Some sections have mandatory provisions, simplified approaches, and trade-offs. This baseline ECB is established using building energy simulation to model a building with the same size and program as the project building, built according to the prescriptive requirements of ASHRAE 90.1 (Sections 5-10). The ECB is expressed in dollars to calculate savings. The performance approach also is used to demonstrate design energy efficiency, often expressed as a percentage better than a specific version of ASHRAE Standard 90.1. ASHRAE 90.1-2007). For ASHRAE 90.1-2010 and 2013, there are two methods to achieve the compliance-pathcalculation methods. Each space must be enclosed, and can be broken into smaller pieces. Areas are calculated to the centerline of the wall (interior) or outside surface (exterior). This allows for additional interior-lighting power and room-cavity ratio (RCR) correction. To determine the gross lighted-floor area for each area type, multiply by appropriate LPD. Interior LPD sum of LPDs for various areas of a building and trade-offs among areas are permitted. These are separated to help clarify the requirements for each version. These include but are not limited to conferencemeeting rooms and training rooms; classrooms and lecture halls; employee lunch and break rooms; storagesupply rooms of 50 to 1,000 sq ft; rooms used for document copying and printing; dressing, locker, and fitting rooms; office spaces up to 250 sq ft; and restrooms. This mode of operation requires manual-on or 50 auto-on function for automatic controls. Exceptions (i.e., where automatic-on is allowed) include public corridors and stairways, restrooms, primary building entrances and lobbies, and areas where manual-on operation would endanger safety or security of the space or building occupants. Exceptions: lights in corridors, electricalmechanical rooms, public lobbies, restrooms, stairways, storage rooms, spaces with only one fixture with rated input power less than 100 W (like a common janitor closet), and space types with a lighting-power allowance of less than 0.6 Wsq ft.
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