02 Aug '13, 8pm
Have technology advanced building systems rendered passive strategies obsolete? @danieloverbey
LEED v4 for Homes contains a three-point credit for optimizing a building’s orientation for passive solar heating. Details of the credit are specific to managing the amount, shading and orientation of south-facing glass. These are sound design strategies, but their contributions toward an optimized passive solar heating system are limited. Homes that implement these strategies still run the very real risk of overheating during a sunny winter day. Diurnal temperature swings may still siphon heat from the south-facing glazing. The point here is not to criticize LEED. The absence of a robust passive solar heating component to the LEED for Homes rating system is symptomatic of a broader oversight of passive solar heating by the high-performance design and construction community. Green building has become so sophisticated that we may ponder whether passive solar heating is stil...