| Passive Tracking |
| Due to the cylindrical shape, the solar tubes are able to passively track the sun throughout the day, providing as much as 25% more heat output than an equivalent flat absorber area. |
| Even during overcast conditions, the high efficiency absorption of solar radiation combined with excellent insulative properties of the solar tube can heat water all year round. |
| This means more table heat output throughout the day, as both morning and afternoon sun are effectively absorbed even on cloudy days. |
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