Sustainability information

As part of the architectural legacy of the City, the library was built to LEED standards and achieved LEED Gold designation in February, 2015. Below is a listing of the many features that helped us meet the LEED standard (see also the sustainability slideshow link at left).

Central water to water heat pump plant

The heat pump is connected to a geo-exchange system to use the ground under the parkade as a heat sink to cool the building in the most energy efficient manner.

Dedicated outdoor air system

DOAS demand ventilation system uses only as much fresh air as needed based on room CO2 and temperature sensors. The opening windows and motorized clerestorey windows provide natural ventilation and cooling during mild weather. Variable speed drives on the air units allow the fan energy use to be reduced and to move only as much fresh air as needed for the occupancy load of the building.

Domestic hot water systems

The domestic hot water for all fixtures is generated by small local electric hot water heaters to minimize the use of extensive copper tubing, minimize standby heat losses, and ensure that hot water is available at the sinks in 10 seconds or less. This avoids wasting cool or lukewarm water while waiting for the hot water to start coming out of the tap.

Green housekeeping

Products used to clean the library are environmentally friendly. Recycled products are used wherever possible. 

Heating from Lonsdale Energy Corporation

High-efficiency condensing boilers (over 92% efficiency) provide the peak heating requirements for the library as well as the local neighbourhood. The energy-efficient system provides low to medium temperature heating water to all the buildings on the block.

Lighting system

The lighting system is equipped with daylight dimming controls to reduce and turn off much of the electric lighting in the building and reduce the energy use. All light bulbs and fixtures are selected to use low wattage compact fluorescent and other high-efficiency lamps.

Low energy consumption, low noise HVAC system

Combined radiant heating/cooling and DOAS displacement ventilation (low-level air supply) provides the highest quality comfort system and indoor air quality at the lowest noise possible.

Low-flush fixtures

The plumbing fixtures have been selected for their very low water consumption and dual flush option. They will save just over 32% of the potable water use of a “business as usual” building.

Monitoring system

The building's mechanical and electrical systems are equipped with a complete suite of energy meters to monitor the system's energy consumption, to allow fine-tuning and further energy-saving optimization over the first few years of the building's operation.

Radiant slab heating/cooling ceiling system

The radiant slab system satisfies the total human comfort range of "mean radiant temperature plus air temperature” in accordance with the ASHRAE-55 standard for human comfort. The thermal mass of the warmed and cooled slab uses the building structure to keep very stable indoor temperatures in spite of outdoor climate variations, while using very small amounts of heating and cooling energy to keep the slab temperature “charged” at the controlled temperature.

Solar shading

The exterior sunshades and fritted glass eliminate over 75% of the solar heat gain through the windows, substantially reducing the cooling load inside the building and keeping the comfort conditions a lot more stable along the exterior zones. The glass windows have been selected for a higher than normal thermal resistance (low-e coating and argon-filled) to reduce the heat loss from the building in winter, as well as to keep the inside surface temperature of the glass from getting too cold and creating a radiant cooling panel in winter. The fritted glass at high level above the sunshade allows daylight penetration further into the interior of the building without additional solar heat gains.

Solar water heating panels

The solar water heating panels serve the LEC heating plant to supplement the energy use during sunny days and are estimated to provide close to 20% of the energy needs of the heating system.

Should you have any questions about this information, please contact us at 604-998-3469

  Join us for our next quarterly sustainability features tour, Wednesday, Dec. 8, 7 – 8 p.m.
 A sustainability collection featuring books, equipment, and links to websites and apps.

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