In the performance approach, a baseline energy-cost budget (ECB) is established, based on the building size and program. Section 10, other equipment: electric motors, potable-water-booster pumps, elevators and escalators.Section 9, lighting: maximum indoor LPD (expressed in watts per square foot), minimum lighting controls, exterior lighting, parking garage lighting.Section 8, power: transformer efficiency, automatic receptacle controls, energy monitoring.Section 7, domestic hot water: minimum equipment efficiency, minimum system features.Section 6, HVAC: minimum equipment efficiency, minimum system features, limitation on reheat, limitation on fan power.Section 5, building envelope: minimum wall insulation, minimum roof insulation, roof reflectance, minimum glazing performance.When using the prescriptive path, ASHRAE 90.1 includes prescriptive requirements for: Some sections have mandatory provisions, simplified approaches, and trade-offs. Within the sections of the standard, there are some variations to this. Performance path: A proposed building design is demonstrated (by doing a building energy simulation) to use less energy than a baseline building built to ASHRAE 90.1 specifications.Prescriptive path: All components of the building meet the minimum standards specified by ASHRAE 90.1.There are two routes for a designer’s compliance with ASHRAE 90.1: Receptacle shutoff control (50% auto-off).Control incentives for advanced controls.Emergency (night light) shutoff and stairwell control.Parking-garage lighting control (daylighting/after hours).Exterior-lighting control (after-hours requirements).Occupancy-sensor control (more spaces vacancy).Detailed daylighting control and skylight requirements.Exterior LPD requirements expansion (exterior zones).The most important of the 30 total addenda to the 2010 version are: Many other lighting control requirements were added including independent functional testing of lighting controls, occupancy, vacancy controls, exterior lighting, and whole-building shutoff controls. Requirements for daylighting and associated lighting controls were added. LPD values dropped slightly on average from the previous version.
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. Commissioning elements including design documentation, and commissioning are now requirements. The 2010 standard is much more detailed and stringent than previous versions, with much stronger mandatory lighting control requirements.
#Ashrae 90.1 lighting standards 2010 code
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. Energy-savings calculations compared to ASHRAE 90.1-2004 were improved by approximately 25%, including plug loads, and approximately 31% for lighting alone. Both the 20 versions of ASHRAE 90.1 have changes, including tables, definitions, and sections, with the 2013 version being the most stringent. ASHRAE Standard 90.1 requires lighting designers to include power allowances, daylighting controls, functional testing, and submittals in their lighting designs.