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Concentrated radiative cooling
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DOI：10.1016/j.apenergy.2021.118368.png)
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摘要
En 中文
A fundamental limit of current radiative cooling systems is that only the top surface facing deep-space can provide the radiative cooling effect, while the bottom surface cannot. Here, we propose and experimentally demonstrate a concept of concentrated radiative cooling by nesting a radiative cooling system in a mid-infrared reflective trough, so that the lower surface, which does not contribute to radiative cooling in previous systems, can radiate heat to deep-space via the reflective trough. Field experiments show that the temperature drop of a radiative cooling pipe with the trough is more than double that of the standalone radiative cooling pipe. Furthermore, by integrating the concentrated radiative cooling system as a preconditioner in an air conditioning system, we predict electricity savings of > 75% in Phoenix, AZ, and > 80% in Reno, NV, for a single-story commercial building.
Keyword:
Radiative cooling
Passive cooling
Concentration
Alternative energy
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期刊
IF:
11
论文数:
2.6W
被引数:
17.8W
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