ASHRAE 90.1 2010 October 18, 2013
Energy Consumption Buildings consume 40% of the primary energy and 71% of the electrical energy in the US. Driven by economic expansion and population growth that require more and more facility space each year, energy use in the US commercial sector is expected to grow by 1.6% per year. Office Equipme nt HVAC All Other Lighting
ASRHAE 90.1-2010 Standard In the ASRHAE 90.1-2010 Standard, there are mandatory requirements: - area controls - automatic lighting shutoff - bi-level lighting - daylight harvesting - exterior lighting control - parking garage lighting control - stairwell lighting control - Designer must ensure that all lighting controls are functionally tested. Lighting controls are a critical component for saving energy in buildings; they are now a must have in buildings instead of a nice to have. These controls can eliminate 60% or more of the wasted lighting energy in buildings while enhancing occupant comfort and productivity.
ASHRAE/IES 90.1-2010 DOE Ruling The U.S. Department of Energy (DOE) issued a ruling that requires all states to certify that they have updated these provisions. All of their commercial building codes regarding energy efficiency needs to meet or exceed ASHRAE 90.1-2010 by Oct. 18, 2013. It can be expected that these lighting control requirements will be in place for most states for all new construction and major renovations of commercial buildings. Commercial buildings designed to ASHRAE/IES 90.1-2010 are expected to achieve, compared to buildings compliant with ASHRAE/IES 90.1-2004, excluding plug loads 32.6% site energy savings and 30.1% energy cost savings 4
Triggering code compliance New Construction X X X X Alterations > 10% of connected lighting load Alterations > 50% of connected lighting load ASHRAE 90.1 X IECC 2010 2004/2007 2012 2006/2009 Section Section 9.1.2 Section Section 9.1.2 C101.4.3 505.1 X X X (2009)
Important ASHRAE 90.1 2010 prescriptive controls for general lighting in Office spaces. All spaces must have a device to control the lighting in the space Manual on switch Automatic switch on to 50% or less of the maximum power All spaces must have controls to reduce the light level. Controls should allow a reduction in power of 30-70% with respect to the maximum load. Exception for spaces that are temporarily used (classroom, conference, restrooms) and Office spaces up to 250 sq ft. These must have an occupancy sensor (max 30 min. time delay) Daylit zones must have Automatic multi-level daylighting controls Required for all sidelit areas >250sq ft and toplit areas >900 sq ft 7
ASHRAE/IES 90.1-2010 requirements: Occupancy sensors(or timer switches, per approval by the authority having jurisdiction) that turn the lights OFF within 30 minutes of the space becoming unoccupied are required in: classrooms and lecture halls. conference, meeting and training rooms; employee lunch and break rooms; storage and supply rooms between 50 and 1,000 sq.ft. in size; rooms used for document copying and printing; office spaces up to 250 sq.ft. restrooms, dressing, locker and fitting rooms. guestroom bathrooms in hotels, motels, boarding houses and similar buildings must turn OFF the lighting (with the exception of night lighting not exceeding 5W) within 60 minutes of the occupant leaving the space
ASHRAE 2010 vs Previous Requirements Outdoor 2010 1 st - ALL outdoor lighting must be controlled by a photosensor. 2 nd - building façade or landscape lighting must also be controlled by an astronomical time switch that turns the lights OFF between midnight or business closing (whichever comes first) and 6AM or business opening (whichever comes first) (or at times designated by the authority having jurisdiction). Previous Outdoor lighting to be controlled by a photosensor (daylight) or astronomical time switch (scheduling) for dusk-to-dawn lighting and either a time switch or combination photosensor/time switch. It also required that building grounds lighting fixtures >100W either use lamps with an efficacy of 60+ lumens/w or be controlled by a motion sensor, with a long list of exceptions
ASHRAE 2010 vs Previous Requirements Retrofit 2010 If a lamp/ballast replacement represents 10% or more of the connected lighting load in an indoor space or outdoor area, the owner must comply with the standard s lighting power density limits expressed in watts per square foot and also its automatic shutoff requirements Previous
ASHRAE 2010 vs Previous Requirements Multilevel Lighting 2010 ASHRAE 2010 embraces it broadly for indoor and outdoor automatic shutoff and space controls, with special requirements for specific applications. Previous (Reduce lighting power by either continuous dimming, stepped dimming, or stepped switching while maintaining a reasonably uniform level of illuminance throughout the controlled space.)
ASHRAE 2010 vs Previous Requirements Manual On or Auto-On 50% 2010 Automatic shutoff controls must be manual-on or automatically turn the lighting ON to not more than 50% power. Exceptions: public corridors and stairwells Restrooms primary building entrance areas and lobbies areas where manual-on would endanger safety or security. Previous Previous versions of the standard allowed automatic control devices to activate the lighting system as well as turn it OFF.
Stairwell Lighting CLTC Research Demonstration Results Occupancy Rates: 1% - 29% Energy Savings: 20% - 60% http://cltc.ucdavis.edu/ 50% lighting power reduction within 30 minutes of vacancy ASHRAE 90.1 IECC 2010 2004/2007 2012 2006/2009 Section Section 9.4.1.6 9.4.1.4 X
System Commissioning Perform functional testing X X Confirm acceptable performance and placement for occupancy sensors Confirm programmable devices are programmed to turn the lights off Confirm acceptable performance and placement for photosensors Submit documentation certifying performance ASHRAE 90.1 X X X X X X X X IECC 2010 2004/ 2012 2006/ Section 2007 Section 2009 9.4.4 C408.3
ASHRAE/IES 90.1-2010 requirements: Power Adjustment Credits. When a lighting control system is installed that is more advanced than the controls required in the standard, an incentive in the form of additional lighting power is allowed creating additional energy savings. Qualifying technologies range from manual dimming control to automatic continuous daylight harvesting dimming, with power adjustment factors, which are applied to the controlled lighting load, of 5-30%.
ASHRAE 90.1-2010 Lighting Power Allowances CONTROL SPACE FACTOR Multi-Level Occ. Sensor Manual, continuous dimming control or programmable multi-level dimming control Open and private office, classroom, conference room, or retail sales area Open and private office, classroom, conference room, or retail sales area 0.05 0.05 to 0.10 depending on space type Programmable multilevel dimming control using programmable time scheduling Open and private office, classroom, conference room, retail sales area, lobby, atrium, dining area, corridors/stairways, gym/pool, mall concourse, or parking garage 0.05 to 0.10 depending on space type Automatic continuous daylight dimming or multilevel daylight switching Open and private office, classroom, conference room, retail sales area, lobby, atrium, dining area, corridors/stairways, gym/ pool, mall concourse, or parking garage 0.10 to 0.20 depending on dimming or switching, effective aperture, and space type Workstation luminaire with occupancy sensors controlling dimmable downlight2 Open office 0.25 Workstation luminaire with occupancy sensors controlling dimmable downlight and personal dimming control3 Open office 0.30
Controls required per code/standard Features HPB Net Zero Std. 189 NYC Green Code Title 24 90.1-2010 90.1-2007 90.1-2004 Auto-shutoff Occupancy Vacancy Bi-Level & Bi-Level Vacancy Individual Space Control Daylight Dim Demand Response Energy Metering 3 rd party functional testing Energy Monitoring Receptacle 50% auto off Alternative Energy Management 2001-1999 26
Controls required per code/standard Features HPB Net Zero Std. 189 NYC Green Code Title 24 90.1-2010 90.1-2007 90.1-2004 2001-1999 Prescribed auto-off compliance routes: Holiday feature for auto-off Manual override >/=2 hrs Functional override, e.g., A/V Compliance triggered by: Change 50% of fixtures Change 10% of connected load LEED v3 requires 90.1-2010 Std. 189 requires 2007 EPAct requires 2004 27
Resources ASHRAE www.ashrae.org NEMA www.nema.org EPA Energy Star Program www.energycodes.gov Department of Energy Building Codes www.energycodes.gov IESNA www.iesna.org DSIRE Database of State Incentives www.dsireusa.org
30