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The general idea behind the solar water heating process:
The roof-mounted panels consist of rows of durable, specially-coated, double-walled, evacuated glass tubes.
The water that is circulated through these tubes is heated by the sun’s solar energy before being returned to a storage tank inside the building. The hot water is then drawn from the storage tank and circulated through a heat exchanger which pre-heats the city water going into the boiler, resulting in a significant reduction in the heating required by the boiler and a significant increase in the life of the boiler.
The panels are oriented on the roof in such a way that they work most efficiently, and the integrated control system ensures that the water passing through the tubes is heated to the ideal temperature. The cylindrical geometry of the tubes ensures that the energy transfer from the sun’s rays is maximized, and the vacuum within the double-walled tubes allows for efficient operation on even cloudy or extremely cold days (as low as -50°C), making this technology suited for climates experienced in Canada.