Thermal blankets melt snow quickly

phys.org | 2/14/2018 | Staff
Mijac (Posted by) Level 3
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Removing snow piled high in parking lots and along roadsides could soon be a far less tedious task. In a study appearing in ACS' journal Langmuir, scientists report that they have tested sunlight-absorbing thermal blankets capable of melting snow three times faster than it would on its own. They say the blankets could slash snow-removal costs and reduce the risk of environmental contamination caused by soot and other products used to melt the white stuff.

Fresh snow reflects most of the sunlight shining on it, as well as much of the heat from those rays, back into the air. As a result, huge heaps of plowed snow can linger for weeks, even when the air is above freezing. Most cities in snow-prone regions either haul it to disposal sites or use gas-powered heaters to melt it. Both of these approaches are labor-intensive, time-consuming and costly. Depositing soot on fallen snow is an ancient, but effective way to increase sunlight absorption and speed up melting. However, soot, antifreeze and other commercial melting products can contaminate water and soil. Jonathan B. Boreyko and colleagues sought to find a more environmentally friendly way to melt snow using a new type of thin, conductive and thermally absorbent metal blanket.

Researchers - Types - Blankets - Aluminum - Alloy

The researchers created three types of these blankets made with an aluminum alloy. Two were coated with black enamel or black silicon-based spray paint that...
(Excerpt) Read more at: phys.org
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