CASE STUDY Condominiums

CASE STUDY
Condominiums
Image courtesy Polaris Pacific
Facility at a glance
Name
Lumina SF
Location
San Francisco, CA, USA
Facility size
1,410,000 ft2/4 buildings
Issue
Need for compact, energy efficient and lownoise HVAC systems
Solution
SmartSource™ single-stage vertical WSHPs
with hydronic hot water coils
The fast-tracked design-build project features modern design by
award-winning Bernardo Fort-Brescia of Arquitectonica architects.
Ultra quiet, energy efficient hybrid heating solution beats out
competition for luxury condominiums – supports LEED® certification
Issues
Outcome
Tishman Speyer, a major real estate developer, specified
highly efficient and ultra low-noise water source heat pump
(WSHP) units for its Lumina luxury condominium property.
Located near the Embarcadero waterfront and offering
views of San Francisco Bay, when completed, Lumina will
accommodate 656 units spanning two mid-rise buildings and
two high-rise towers.
In a laboratory sound test that simulated the floor plans,
the WSHPs beat another manufacturer’s offering in a similar
configuration. “The units performed well to acoustical
testing partly due to Daikin Applied’s advanced control
system which allowed for variable CFM airflow outputs,” says
Fred Parker, Daikin Applied representative with Norman S.
Wright Mechanical in San Jose.
Because each building makes generous use of windows,
in order to meet California’s Building Energy Efficiency
Standards (specifically Title 24 energy compliance), and for
expected LEED® certification, remaining design elements
required high energy efficiency.
The first WSHPS, among a total of 761, will be delivered to
the job site in November 2014 for the first mid-rise tower,
scheduled to open in 2015. The remaining buildings will
take occupancy in 2016. Once all Lumina buildings are in
service, the innovation of the cabinet WSHPs are expected to
contribute to LEED Silver Certification for new construction.
Daikin Applied developed a new SmartSource WSHP model
featuring supplemental hydronic hot water coils placed on
the top of each unit. “The hybrid units are energy efficient in
the cooling mode but extra efficient in the heating mode,”
says Steve Poe, P.E., engineer of record for the project with
Critchfield Mechanical, Inc. (CMI) in San Jose. “The WSHPs
not only meet the developer’s requirements for energy
efficiency and low noise but are ideally suited to the San
Francisco climate which requires heating almost every night
and often during seasonal cool days.”
Adds Craig Fischbach, WSHP sales manager with Daikin
Applied: “In this location, it will be less expensive to heat the
residences with the hydronic hot water coil, versus the heat
pump function using the compressor.” In addition to low
utility bills, Lumina residents will have the option to control
their system using a Wi-Fi enabled thermostat.
©2014 Daikin Applied • www.DaikinApplied.com • CS-1029
Image courtesy Tishman Speyer
Solution
Once installed, the hydronic hot-water coils do not require
use of an electrical compressor to supply heat, providing for
extremely quiet tenant operation.
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