| 摘要 |
In a solar water heater a heat absorbing collector panel is made to inverted box rib or corrugated shape to match other roofing panels. Conduits are secured to the flanks of box ribs or the crests of corrugations. A translucent cover of complemental box rib or corrugated shape rests on the metal sheet in register with it on strips of insulating material all around the area of the heater. |
