A side view of the Helios 4 coffee roaster system. Visible is the array, the heat pipe, and the drum roaster inside the roaster house. Heat comes from the array when it's sunny, and from a propane pre-heater when it's cloudy.
Michael and David behind the counter at Solar Roast Coffee, in downtown Pueblo.
David, standing on the concentrator array of the helios 4 solar coffee roaster.
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