A transparent insulation made from Low-E and Low-E Baffles (1) is combined with Cloud Gel into a prefabricated roof panel called the Weather Panel. (see Figures 1 and 2) This panel has:

The Low-E Baffle is a patented plastic sheet that has almost the insulating value of a Low-E glazing, but only one third of its solar energy transmission losses from reflection and absorption. Like Low-E, it is essentially free. But it can only be used in conjunction with a Low-E layer, not alone. It has been made on mass production machinery, and has passed accelerated aging tests. It was used in the Saint-Gobain sponsored Weather Panel field test in Brussels. Without the Low-E Baffle, it would impossible to capture heat from overcast skies in freezing weather, because this requires both a high insulating value and a high transmission of sunlight.

(1) e.g. U.S. patent 5,524381, see Section 30

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Weather Panel Design

The Weather Panel is bolted onto the steel frame from underneath. Then the water for heat storage is added, and foam insulation is inserted between the panels. A 4 x 8 foot x 5 inch (1.2 x 2.4 meter x 13 cm) Panel weights 130 pounds (60 kg), not including its Low-E, Cloud Gel, and water, which are not shown.