Comparing Active and Passive Strategies
Building for energy efficiency in new construction has become routine when the right technical expertise is enlisted, proper building technology is selected, and few constraints limit the design. Retrofitting for energy efficiency poses a greater challenge when existing buildings employ dated systems, materials, and design practices. Priority must be given to those upgrades that will enable the building to achieve the greatest performance within the given constraints. This article describes how a post-secondary institution selected retrofit packages when presented with many possible options, including both building envelope and HVAC system upgrades.
By Aman Hehar and Matthew Tokarik