Spring2015 HIGH PERFORMING BUILDINGS 37
generated by the building and provides evapotranspiration cooling during the warmer months of the year.
Flexible Layout. CIRS is designed
to allow for changeable floor plans
in the building’s wings. The modular
office/lab partitions can be reconfigured as often as required. All of the
power and data for offices and work
stations comes from the raised floor,
and no wires are run through any of
the partition walls.
Solar Energy and Waste Heat. In ad-
dition to 25 k W of building integrated
PV, CIRS captures solar energy
through a 40 k W series of evacuated
vacuum tube solar collectors that
are used to preheat domestic water.
CIRS captures waste heat from
the neighboring Earth and Ocean
Sciences (EOS) building and was
designed to return 600 MWh of
surplus energy back to the campus
annually. The process of running all
mechanical and electrical systems
in the building using hydroelectric
power with a very low carbon footprint was estimated to require 585
MWh per year.
The net result of this scenario
would be net-positive energy performance. The energy that is returned
to campus from CIRS displaces
the use of fossil fuels, which was
intended to translate into 330,693
lbs (150 tonnes) of CO2e emission
reductions per year.
Annual Water Use 439,925 gallons
WATER AT A GLANCE
ENERGY AT A GLANCE
Annual Energy Use Intensity (EUI) (Site)
41. 4 kBtu/ft2*
Electricity (From Grid) 41. 2 kBtu/ft2
Renewable Energy (PV) 0.2 kBtu/ft2
Geothermal Heat Absorption and
Heat Rejection 5. 4 kBtu/ft2
Annual On-Site Renewable Energy
Exported 0 kBtu/ft2
Annual Net Energy Use Intensity
41. 2 kBtu/ft2 (excluding geothermal
and heat transfer energy)
Annual Source (Primary) Energy
Annual Energy Cost Index (ECI) $0.60/ft2
(an approximate cost as UBC isn’t billed
by the utility on a per-building basis)
Savings vs. Canada’s Model National
Energy Code for Building Design
Reference Building 32%
Carbon Footprint 0.369 lb CO2e/ft2·yr**
Percentage of Power Represented by
Heating Degree Days (Base 65˚F) 5,353
Cooling Degree Days (Base 65˚F) 176
Annual Hours Occupied 1,976
Above Photovoltaic cells are mounted on
shading devices on the north and south bar
windows along the south facing façades.
Below The CIRS atrium is a busy space,
with traffic from classes and meetings. A
video wall displays information on the sustainable features of the building, system
performance, research projects and upcoming events and activities.
*Geothermal and waste heat transfer between CIRS
and neighboring (EOS) building not included in site
or source EUI.
** Carbon footprint calculated using BC Hydro’s
conversion factor of 14 tonnes of CO2e per GWh of
electricity supplied by the utility.
Note: The CIRS building exchanges waste heat with
the neighboring Earth and Ocean Sciences (EOS)
building. Approximately 7. 2 kBtu/ft2 per year of heat
was transferred from CIRS to EOS during the monitoring period. However, energy data for the “waste
heat” transferred from EOS and used by the CIRS
building is unavailable due to metering concerns.
TABLE 1 SUSTAINABLE TECHNOLOGIES PAYBACK EXAMPLES
System Capacity Cost Simple Payback
Building-Integrated PV 25 k W CAN$250,000 62. 5 years
Solar Collectors 40 k W CAN$75,000 Calculations Underway
Geoexchange System 150 k W CAN$150,000 15 years