Walnut St. - 22 Apartment units |
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Building photoThis 22 unit building received a 15 panel solar hot water system projected to reduce emissions equivalent to removal of 1.5 cars from the road, while saving the owner approximately $2,875 per year in fuel costs, and producing a return on investment over of 18%.
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Before and after gas use - actual numbersThe brown bars show 'before' gas use. The lower green bars show 'after' gas use. Savings average out to 1,506 ccf/year. Remarkably the RETScreen software we used predicted (with incredible accuracy) 1,503ccf/year annual energy savings. Priced at $1.877/ccf = $2,827 saved per year.
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15 Panel solar collector arrayThis array contains 15) 4'x 8' selective surface flat plate collectors. On a sunny day it collects solar heat equivalent to roughly 5 gallons of fuel oil.
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Maintenance free racks. These custom built maintenance free racks securely hold the collectors at an angle optimal for year round solar collection.
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2,000 gallon drainback tankThis 8' diameter x 7' high tank can store enough solar heat to preheat multiple days worth of hot water. It was site built by Rushforth Solar.
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