ENERGY AND PERFORMANCE
Cols
Summary
Energy and Performance covers how building energy use is reduced and measured: passive design, energy modeling, daylighting metrics, heat pump electrification, and envelope performance targets. Energy code provisions live in Codes, Zoning, and Standards; these notes cover strategy and metrics.
Types
- Building Envelope Performance Targets
Performance targets for envelope airtightness and heating demand, using Passive House criteria as a reference for high-performance buildings. - Daylighting Metrics
The climate-based daylight metrics sDA and ASE, defined in IES LM-83, with LEED thresholds and the illuminance range used for useful daylight. - Energy Modeling
Whole-building energy simulation used to compare design options and predict savings, with ASHRAE Guideline 14 calibration metrics. - Heat Pumps and Electrification
Heat pump efficiency ratings and ENERGY STAR cold-climate criteria for replacing fuel-fired heating with electric heat pump systems. - Passive Design Strategies
Using orientation, glazing, thermal mass, shading, and ventilation to heat, cool, and light a building with little mechanical energy.
Sources
- U.S. Department of Energy: guide to passive solar home design, https://www.energy.gov/sites/prod/files/guide_to_passive_solar_home_design.pdf
- ENERGY STAR: air source heat pump key product criteria, https://www.energystar.gov/products/air_source_heat_pumps/key-product-criteria