Shas Ti Kelly Road Secondary School
Prince George, British Columbia
The mechanical design for Shas Ti Kelly Road Secondary utilizes a geothermal system for the HVAC system primary energy source. The geothermal system is a vertical borehole system that wraps around the soccer pitch to minimize playing field disturbance. These systems were installed prior to the bulk of the building systems.
Two water to water heat pumps totaling 80 nominal tons are used to extract heat out of the ground and apply it to the building’s HVAC system. The HVAC system is based on a four pipe fan coil system that used a combination of air handlers, fan coils and vertical unit ventilators to serve each occupied space. Carbon dioxide sensors are used to minimize yet maintain adequate outside air delivery to each occupied space.
The outside air delivery system is based on dual mass, reverse flow heat recovery ventilators. The style of unit is so efficient that auxiliary heating is not required to maintain the outside air at an acceptable temperature, even at the worst winter temperatures.
Energy and utility saving features employed:
- Geothermal energy
- Condensing back up boilers
- Dual mass reverse flow energy recovery ventilators
- Demand control ventilation
- Condensing domestic water heaters
- Low consumption plumbing fixtures
- Timed shower heads in changing rooms
- Infrared timed faucets in washrooms