In praise of Invisible Sustainability [View all]

[NeoGreen]

https://www.treehugger.com/green-architecture/praise-invisible-sustainability.html

In praise of Invisible Sustainability
Saskatchewan Conservation House, late 70s

Architect Carly Coulson coins a new term that describes a philosophy of green building.

In 1977, in response to the energy crisis of the time, a team of clever architects and engineers built the Saskatchewan Conservation House, which had a compact design, continuous super-insulation, high-efficiency mechanical ventilation and summer shading. They had been asked to design a solar-powered house but Harold Orr wrote that they "came to the conclusion that solar heating of a home in Saskatchewan was not appropriate" -- so instead, they came up with the simpler, passive approach.

Today we face a different carbon crisis, and some architects and engineers are responding with the American Institute of Architects' 2030 commitment that calls for "all new buildings, developments, and major renovations to be carbon-neutral by 2030." One architect in very cold Duluth, Minnesota, is on target for 2030 right now. Carly Coulson describes her approach as "Invisible Sustainability", and it sounds very much like the Saskatchewan Conservation House:

With a conservation-first, keep-it-simple approach, we focus on the building envelope and elimination of heating and cooling loads. This alone can achieve a 70 -to-80 percent primary energy reduction without renewable energy systems....Integrated into our creative design process, energy modeling is used to analyze the methods and details that achieve deep energy reductions. We focus on solutions that are permanent and passive:

Compact building form
Continuous super-insulation
Winter passive solar heating
Summer shading
Elimination of thermal-bridges
Air-tightness
High-efficiency mechanical ventilation

Avoiding the trap of technology-creep, this passive approach simplifies and liberates. There is no dependence on complex systems that demand constant monitoring, maintenance, and eventual replacement.... Energy reductions are built-in and will last the lifetime of the building.