The unique Ecotube™ solar panel
The Ecotube™ panel forms part of a simple, yet highly efficient, energy transfer system that can heat water throughout the year.
With its high performing patented design, the Ecotube™ panel uses an indirect system to heat water. The heat transfer fluid passing through each panel is a solution of water and non-toxic antifreeze. This fluid absorbs heat from the Ecotube™ array and is pumped to a heat exchanger (coil) in the hot water tank. The heat then passes into the water, and the cooled fluid is pumped back to the solar panel.
The pump is controlled by an electronic sensor that detects the temperature difference between the solar panel and the hot water tank. When the temperature in the panel is lower than the temperature in the tank, such as on cloudy days or at night, the system remains on standby. But when the sun raises the temperature in the panel to 4°C above the temperature in the tank, the differential temperature controller switches on the pump.
Surprisingly, due to the design of the Ecotube™, the heat collection from the panel is independent of the air temperature around the panel so it produces hot water even on very cold, clear, winter days. Also there is no panel more versatile than the Ecotube™ solar panel – as long as the orientation is broadly south facing, it can be installed on a pitched roof, vertically on a wall, or on a flat roof.
The performance of the Ecotube™ solar panel is impressive, with each panel generating 810 kWh / panel / year (727 kWh / m˛ / year) – please compare the m˛ performance with other panels and prepare to be impressed!
A Solar heating system (such as the Ecotube) is the most cost-effective and environmentally friendly way of reducing CO2 emissions and household energy bills.
Cross section of evacuated tube
Performance comparison chart:
Ecotube™ versus Flatplate