PASSIVE SOLAR HEATING METHOD AND PRODUCT
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United States of America Patent
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Jun 26, 2014
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Jun 26, 2014
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Abstract
A resilient black flexible polymer mat is submerged on the bottom of a small pool or pond to promote the passive solar heating of the water. The upper surface is non-reflective, textured and provided with projecting elements to increase the surface area for enhancing the amount of solar radiation absorbed to heat the mat; the bottom surface has a plurality of spaced-apart projecting frictional supporting members to assist in retaining the mat in position on the bottom of the pool or pond; spaced-apart passages extending between the upper and bottom surfaces permit the movement of water.
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