CF is proud of our leadership and innovation in implementing Canada’s first geo-exchange retrofit of an occupied, mixed-use high-rise complex in a downtown city core!
Purpose of the project
CF is proud to have installed Canada’s first geo-exchange retrofit of an occupied, mixed-use high-rise complex in a downtown core. The project took place at 777 Dunsmuir in Vancouver, which includes a 19-storey office tower. The geo-exchange system was put in place to harvest the building’s rejected heat and store it underground until needed. This solution reduces greenhouse gas emissions associated with traditional heating and cooling while saving energy costs for the organization. CF is particularly proud because the retrofit was conducted in a fully occupied building, in a dense urban core, with minimal disruption to building occupants.
Approach
Cadillac Fairview partnered with Fenix Energy, a company that provides integrated renewable energy solutions to the built environment, to develop the geo-exchange system. Geo-exchange is a process involving the use of the earth to store heat, which would be normally vented from the building. In other words, the building’s stored heat is stored underground until needed. This reduces energy costs and emissions associated with traditional heating and cooling. Prior to announcing this project, geo-exchange systems had primarily been installed in new building construction or properties where there is land readily available, adjacent to the building. Never before had this been attempted on an already occupied property in Canada, consequently, a new engineering solution was required. This included the installation of vertical underground piping, as opposed to horizontal and new drilling systems to enable boring in confined spaces such as parkades, with lower headroom. These innovations resulted in minimum disruption of the surrounding area, allowing the building to remain open during the retrofitting.
Implementation
In 2014, the system was successfully commissioned at 777 Dusmuir. Geo-exchange has traditionally been applied to pre/new construction projects. This project was unique and particularly groundbreaking because 777 Dunsmuir is a fully occupied building constructed in 1990. The team used innovative technology to drill 30 boreholes 400 feet deep into the earth, below the existing building structure.
Results
The geo-exchange retrofitting of this property was a success – not only did this project align with Cadillac Fairview’s sustainability objectives, it also provided an alternative energy source to the building and the retail component of the complex, while creating substantial financial savings. The success of this project established the viability of engineering technology to tackle larger existing building geo-exchange retrofits, further reducing emissions and reducing energy costs. The retrofit was expected to reduce carbon emissions from heating energy by 85%, the equivalent of taking 190 cars off the road.
Energy security is the availability, accessibility, affordability, and acceptability of a sustainable energy supply. This is a key sustainability issue as demonstrated through the Sustainable Development Goal 7 to “ensure access to affordable, reliable, sustainable and modern energy for all”.
The internet is big, and it is growing bigger. This is what happens on the internet every 60 seconds, and it is but a tiny snapshot of everything that happens. Our digital lives are becoming increasingly dependent on this network, but this is having an increasing physical impact too. Alongside the visible infrastructure that crisscross […]
2019 will be the year of adaptation to climate change: the French perspective
Decreasing energy consumption (of buildings in particular) is one of the major priorities of energy and climate policy in France following the Paris Agreement in 2015. This decrease considers all activity areas, especially real estate, which accounts for a large share of French carbon emissions (27%). With its first “Low Carbon National Strategy”, France is […]
