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US4159709A Low cost solar panel 失效
低成本太阳能电池板

Low cost solar panel
摘要:
A low-cost solar panel is fabricated from three laminated plastics layers, the upper two layers being transparent to luminous and infra-red solar radiation and the bottom layer being opaque; in one version water to be heated flows first between the upper two layers and then between the lower two layers to be further heated in flowing over the bottom layer.
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