Enhanced radiative cooling with Janus optical properties for low-temperature space cooling
Passive daytime radiative cooling that could provide sub-ambient cooling emerges as a promising technology to reduce household energy consumption. Nonetheless, prevailing studies are predominantly focused on surface cooling, often overlooking its adaptability to enclosed spaces with active cooling t...
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| Format: | Article |
| Language: | English |
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De Gruyter
2024-01-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2023-0641 |
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| author | Yang Meng Zeng Yijun Du Qingyuan Sun Haoyang Yin Yingying Yan Xiantong Jiang Mengnan Pan Chin Sun Dazhi Wang Zuankai |
| author_facet | Yang Meng Zeng Yijun Du Qingyuan Sun Haoyang Yin Yingying Yan Xiantong Jiang Mengnan Pan Chin Sun Dazhi Wang Zuankai |
| author_sort | Yang Meng |
| collection | DOAJ |
| description | Passive daytime radiative cooling that could provide sub-ambient cooling emerges as a promising technology to reduce household energy consumption. Nonetheless, prevailing studies are predominantly focused on surface cooling, often overlooking its adaptability to enclosed spaces with active cooling technologies. Here we present a multilayer radiative cooling film (J-MRC) with Janus optical properties in the mid-infrared region, consisting of the nanoporous polyethylene films, the polyethylene oxide film, and silver nanowires. The top side of the J-MRC functions as a conventional radiative cooling material to supply sub-ambient surface cooling, while the bottom side with low mid-infrared emissivity transfers limited heat via thermal radiation to the low-temperature enclosures. Our experiments validate that the J-MRC possesses an enhanced space cooling performance in comparison to the conventional radiative cooling film. This work provides a valuable design concept for radiative cooling materials, thereby expanding their practical scenarios and contributing to reduce the carbon emission. |
| format | Article |
| id | doaj-art-45a34792c13244ad8b2cfbca7b22c2a1 |
| institution | OA Journals |
| issn | 2192-8614 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-45a34792c13244ad8b2cfbca7b22c2a12025-08-20T01:53:26ZengDe GruyterNanophotonics2192-86142024-01-0113562963710.1515/nanoph-2023-0641Enhanced radiative cooling with Janus optical properties for low-temperature space coolingYang Meng0Zeng Yijun1Du Qingyuan2Sun Haoyang3Yin Yingying4Yan Xiantong5Jiang Mengnan6Pan Chin7Sun Dazhi8Wang Zuankai9City University of Hong Kong, Hong Kong SAR, ChinaCity University of Hong Kong, Hong Kong SAR, ChinaSouthern University of Science and Technology, Shenzhen, ChinaSouthern University of Science and Technology, Shenzhen, ChinaCity University of Hong Kong, Hong Kong SAR, ChinaCity University of Hong Kong, Hong Kong SAR, ChinaThe Hong Kong Polytechnic University, Hong Kong SAR, ChinaCity University of Hong Kong, Hong Kong SAR, ChinaSouthern University of Science and Technology, Shenzhen, ChinaThe Hong Kong Polytechnic University, Hong Kong SAR, ChinaPassive daytime radiative cooling that could provide sub-ambient cooling emerges as a promising technology to reduce household energy consumption. Nonetheless, prevailing studies are predominantly focused on surface cooling, often overlooking its adaptability to enclosed spaces with active cooling technologies. Here we present a multilayer radiative cooling film (J-MRC) with Janus optical properties in the mid-infrared region, consisting of the nanoporous polyethylene films, the polyethylene oxide film, and silver nanowires. The top side of the J-MRC functions as a conventional radiative cooling material to supply sub-ambient surface cooling, while the bottom side with low mid-infrared emissivity transfers limited heat via thermal radiation to the low-temperature enclosures. Our experiments validate that the J-MRC possesses an enhanced space cooling performance in comparison to the conventional radiative cooling film. This work provides a valuable design concept for radiative cooling materials, thereby expanding their practical scenarios and contributing to reduce the carbon emission.https://doi.org/10.1515/nanoph-2023-0641radiative coolingjanus optical propertyelectrospinningsurface coolingspace cooling |
| spellingShingle | Yang Meng Zeng Yijun Du Qingyuan Sun Haoyang Yin Yingying Yan Xiantong Jiang Mengnan Pan Chin Sun Dazhi Wang Zuankai Enhanced radiative cooling with Janus optical properties for low-temperature space cooling Nanophotonics radiative cooling janus optical property electrospinning surface cooling space cooling |
| title | Enhanced radiative cooling with Janus optical properties for low-temperature space cooling |
| title_full | Enhanced radiative cooling with Janus optical properties for low-temperature space cooling |
| title_fullStr | Enhanced radiative cooling with Janus optical properties for low-temperature space cooling |
| title_full_unstemmed | Enhanced radiative cooling with Janus optical properties for low-temperature space cooling |
| title_short | Enhanced radiative cooling with Janus optical properties for low-temperature space cooling |
| title_sort | enhanced radiative cooling with janus optical properties for low temperature space cooling |
| topic | radiative cooling janus optical property electrospinning surface cooling space cooling |
| url | https://doi.org/10.1515/nanoph-2023-0641 |
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