20 tube solar panel - high efficiency 47mm Ø double wall evacuated tube solar collector. includes: 20 bottom rail mounted tube cups, 1 tube of heat conducting paste, 2 side rails, 1 bottom rail and 1 set of nuts, bolts and washers for assembly Panel dims: 1660 x 1570 x 155mm Weight: 49kgs Panel Area: 2.49m2 Aperture Area: 1.25m2 Tube Length: 1.5m n0 = 0.599 Width of absorber (internal glass tube): 37mm Casing Material: Stainless Steel Filling Volume: 1.1ltr Width of Entry/Exit Pipe: 22mm Thickness of Collector insulating material: 60mm Heat Transfer Medium: Water mixed with 40% Navitron Glycol antifreeze #array #collector #evacuated #navitron #replenergy #sfb2047 #solar #thermal #tubes
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