Zero Energy Certified

SFO – 1057 – AIRFIELD OPERATIONS FACILITY (AOF)

VITAL STATS

Certification StatusZero Energy Certified
LocationSan Francisco, CA, USA
TypologyRenovation
Project Area20,240 SF
Start of OccupancyJune 2014
Owner OccupiedYes
Number of Occupants12

PROJECT TEAM

OwnerSan Francisco International Airport
Owner RepresentativeJoshua Heth (City and County of San Francisco)
Project ManagerRaniel Camacho (City and County of San Francisco)
General ContractorTrivco Construction, SVALA Construction, Inc, Albion Power Company
ArchitectDerrick Homer (City and County of San Francisco)
MechanicalJoshua Heth (City and County of San Francisco)
ElectricalBen Cruz (City and County of San Francisco)
PlumbingLibi Yap (City and County of San Francisco)
Lighting DesignChi Lao (City and County of San Francisco)
Energy AnalystJonathan Kocher (City and County of San Francisco)
Sustainability DirectorErin Cooke (City and County of San Francisco)
Photo Courtesy of SFO – 1057 – Airfield Operations Facility (AOF)

BUILDING SYSTEMS INFORMATION

Wall R value and section specification21. 3″ insulated metal wall panel, 6″ rigid board roof insulated entirely above deck
Roof R value30
Window to Wall Ratio24.4%
Window U Value0.29
Window Description
View Dynamic Glazing with window SHGC between 0.09 – 0.46 depending on tint level

MECHANICAL SYSTEM DESCRIPTION

The office is served by a Daikin Heat Recovery VRV system which is comprised of 11 fan coil units and 2 heat recovery VRV heat pumps. Ventilation is provided to the office by a dedicated outside air fan. Each zone has a schedule depending on operations. Only a portion of the building is utilized 24 hours a day.

The garage is unconditioned.

MECHANICAL VENTILATION

Ventilation air is provided to the office by a dedicated outside air fan with variable speed drive. Ventilation air is filtered, but not conditioned. The air is ducted directly to a mixing box on the intake side of each fan coil unit.

LIGHTING

A combination of LED lighting and sky light tubes (Solatube 750 DS) are used for lighting the office. Occupancy sensors are located in every room and are connected to lighting control system, which varies the intensity of lights and light switches if needed.

USER LOAD REDUCTION STRATEGIES

The building occupants were engaged in a series of meetings to make them aware of the strategies being used to improve the performance of the building. it was important to inform them why these changes were being made and ensure that the changes would not adversely effect the operations of this critical facility.

Photo Courtesy of SFO – 1057 – Airfield Operations Facility (AOF)

RENEWABLE PRODUCTION SYSTEMS INFORMATION

Panel Array Size141.6 kWh
Panel Quantity400
Panel Type and BrandSunEdison MEMC-P300BMC-20 (240) & SunPower E20-435- COM (160)
Panel LocationOffice Roof and Garage Roof
Inverter Quantity3
Ownership DetailsSan Francisco International Airport

PERFORMANCE

Actual energy use during performance period159,447 kWh
Actual energy produced during performance period163,863 kWh
Net Energy Use-4,416 kWh
EUI26.9 kBTU/sf/yr
Photo Courtesy of SFO – 1057 – Airfield Operations Facility (AOF)
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