Paper Conference

Proceedings of eSim 2020: 11th Conference of IBPSA-Canada


Evaluation of the robustness of prescriptive building energy code energy conservation measures

Adam Douglas Wills, Iain Macdonald, Ghassan Marjaba
National Research Council Canada

Abstract: There are ongoing efforts to develop tiered energy codes for buildings to reduce energy consumption of new construction in Canada. For housing and small buildings, there is a desire to maintain prescriptive compliance paths that will nominally meet the performance objectives of the tiers. Establishing prescriptive requirements that correlate to a set energy savings is a non-trivial task since the efficacy of energy conservation measures (ECMs) varies across different climates and built forms. This study analyzed how consistent, or sensitive, the energy performance of different prescriptive envelope ECMs are using 240 new construction housing archetypes representing five climate zones. Parametric simulations were conducted using the Housing Technology Assessment Platform (HTAP), and both energy performance and incremental construction costs were determined. The analysis showed that prescriptive airtightness and exterior wall insulation measures provide the highest performance per variation across built-forms in all major Canadian climates.