| 摘要 |
A solar energy air heating device comprising a base plate. A wall member is attached to the periphery of the base plate and to the periphery of a panel to form an enclosure. The central portion of the panel is transparent and transmits solar energy therethrough and into the enclosure. A heat absorbing surface is disposed within the enclosure. Air is passed through an aperture in the wall member. The outside of the enclosure is insulated with polyurethane foam that is applied by spraying process. The outside surface of the polyurethane foam is covered with an elastomeric membrane.
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