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Solar panels on the roof of this structure will heat glycol which in turn heats the water to run through tubing laid in the concrete slab.  Looks simple, but… we all got tangled up in this stuff before figuring out how to lay it neatly in loops of equal length (so the hot water monitoring system would not get confused!).  Prior to laying the tubing, we bought recycled foam insulation panels from a company which salvages good insulation from demolition sites.  This makes a cocoon to preserve heating in the building — necessary because this is a “NetZero” building — no furnace, no heat other than this system.  Great insulation everywhere was a necessity.

 

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best96Polly Bart in Sparks, MD on HouzzPolly Bart in Sparks, MD on HouzzBest of Baltimore

Quote of the Year

"What can a PhD with a tool belt do that other contractors can't? If it's Polly Bart of Greenbuilders, she can undertake expert home construction, remodeling and additions using all the latest eco-friendly materials and strategies, including strawbale products, maximum use of passive light, solar panels, green roofs and heat pumps. The brains behind countless LEED-certified projects for commercial and government clients, Bart gets rave reviews for her award-winning green solutions to construction."

- Best of Baltimore issue, Baltimore Magazine, August 2011

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