Thermally Absorptive Blankets for Highly Efficient Snowbank Melting
| Autor: | Sarah M. Wray, Kristen M. Swedberg, Matthew D. Fox, Jonathan B. Boreyko, Karl W. Vitale, Andrew B. Sheen, Owen L. Hansen |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
010504 meteorology & atmospheric sciences Enthalpy of fusion 02 engineering and technology Surfaces and Interfaces Molar absorptivity Blanket 021001 nanoscience & nanotechnology Condensed Matter Physics Snow 01 natural sciences Air temperature Electrochemistry General Materials Science Reflective surfaces Composite material 0210 nano-technology Spectroscopy 0105 earth and related environmental sciences |
| Zdroj: | Langmuir. 34:2606-2609 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/acs.langmuir.7b03182 |
| Popis: | Fallen snow is one of the most reflective surfaces found in nature. As a result, snowbanks can take many weeks to melt even when the air temperature is above freezing. Here, we introduce a simple and passive method for quickly melting snowbanks by draping a thermally absorptive blanket over the snow. Using controlled experimental conditions, it was observed that snowbanks can melt 300% faster when a thermally absorptive blanket is placed on top. The mechanism is the threefold increase in absorptivity of the spray-coated blanket compared to bare snow, which allows the vast majority of the irradiation to be used to overcome the latent heat of fusion. |
| Databáze: | OpenAIRE |
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