04 July 2008

A low-energy commercial building with ground-source heat pumps

The Canadian low-energy building presented in this article integrates ground-source heat pumps with floor heating for space heating and free cooling. Featuring also a two-stage outdoor make-up air preheating unit with exhaust air and geothermal heat recovery, and hybrid ventilation, optimized natural lighting and improved envelope, the annual electrical energy consumption was reduced by 71.4 % compared to the reference cold climate building. This ranks this building among the highest performance structures in North America.