Canadian Structure Will Tap Geothermal Energy with Piles

Angelo, William J.
October 2003
ENR: Engineering News-Record;10/13/2003, Vol. 251 Issue 15, p17
Trade Publication
After a successful 20-year run in Europe, Austrian geothermal heating technology is making its debut in North America. The low-cost thermal-active foundations can provide up to 600 tons of heating or cooling capacity and can be used in piles, diaphragm walls and foundation slabs. The system uses looped piping installed in slabs, walls and piles to circulate a glycol mixture for conversion to heating or cooling. Already in use in over 400 European buildings, the system can reduce utility costs by 80%. Those were important considerations for foundation contractor Bermingham Construction Ltd., Hamilton, Ontario, as it installed 57 14-in.-dia steel pipe piles 100 ft deep for the new $6-million Canada Marine Discovery Center. The system has been used on a number of large commercial structures, including a 20-story bank building in Hanover, Germany, and a terminal at London, England's Heathrow Airport.


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