Paper Conference

Proceedings of eSim 2010: 6th Conference of IBPSA-Canada

     

ACHEIVING MORE WITH LESS: VERIFICATION OF CANADA'S MODEL-BASED SCREENING TOOL FOR BUILDING ENERGY RATINGS

Curt Hepting, Diane Ehret, Doug Maclean

Abstract: Natural Resources Canada hosts an on-line "Screening Tool for New Building Design" that serves as a simplified modelling application. The Tool may be used to gauge qualification levels for the energy performance prerequisite and credit under the LEED® Canada-NC rating system. It also may be used to evaluate and rank proposed modifications to existing buildings, and to identify the mix of measures that results in costeffective energy savings and a balanced design. To this end, the Yukon Government commissioned a study to verify the Tool's relative accuracy in comparison to a much more detailed computer modelling approach. Overall, the Web Screening Tool compared well to the detailed energy performance simulations. The Tool was shown to be within ±2 LEED points (out of a possible 10) for 90% of the projects tested. The overall discrepancies on savings average +2.8% for energy use and -0.1% for energy costs. This paper discusses the approach and results of this study. It also comments on where some of the largest discrepancies lie with use of the Screening Tool. Some of the most prevalent savings measures applied in a sample of efficient building designs are also highlighted.
Pages: 201 - 207
Paper:
esim2010_7B1_201_207