Quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling
This work theoretically demonstrates a quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling. In the design process, by inserting well-defined materials with different refractive-index profiles in suitable layers, there are absorption bands at different regions and th...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2021-02-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0035138 |
| _version_ | 1818846556376268800 |
|---|---|
| author | Yeqing Zhu Yong-Hong Ye Dong Wang Yurong Cao |
| author_facet | Yeqing Zhu Yong-Hong Ye Dong Wang Yurong Cao |
| author_sort | Yeqing Zhu |
| collection | DOAJ |
| description | This work theoretically demonstrates a quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling. In the design process, by inserting well-defined materials with different refractive-index profiles in suitable layers, there are absorption bands at different regions and the absorption bands are enhanced and broad in atmospheric transparency windows. Combined with the interference effects of the surface and the high reflectivity of Ag, the solar reflectance of the emitter is maximal in the solar spectrum. The influence of different nonradiative heat exchanges and the ambient air temperatures on the cooling performance of the multilayer emitter are calculated. At the same time, the mechanism of radiative cooling is analyzed. All the results show that the proposed emitter can effectively achieve sub-ambient daytime radiative cooling. Due to the superior durability and mechanical robustness of the multilayer emitter, it may be a key element in the realization of energy-efficient radiative cooling devices. |
| first_indexed | 2024-12-19T05:47:26Z |
| format | Article |
| id | doaj.art-849115f7cd974fe28bbf5ee6265354f6 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-19T05:47:26Z |
| publishDate | 2021-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-849115f7cd974fe28bbf5ee6265354f62022-12-21T20:33:47ZengAIP Publishing LLCAIP Advances2158-32262021-02-01112025109025109-810.1063/5.0035138Quasi-periodic selective multilayer emitter for sub-ambient daytime radiative coolingYeqing Zhu0Yong-Hong Ye1Dong Wang2Yurong Cao3School of Computer and Electronic Information, Nanjing Normal University, Nanjing 210023, ChinaSchool of Computer and Electronic Information, Nanjing Normal University, Nanjing 210023, ChinaSchool of Computer and Electronic Information, Nanjing Normal University, Nanjing 210023, ChinaSchool of Computer and Electronic Information, Nanjing Normal University, Nanjing 210023, ChinaThis work theoretically demonstrates a quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling. In the design process, by inserting well-defined materials with different refractive-index profiles in suitable layers, there are absorption bands at different regions and the absorption bands are enhanced and broad in atmospheric transparency windows. Combined with the interference effects of the surface and the high reflectivity of Ag, the solar reflectance of the emitter is maximal in the solar spectrum. The influence of different nonradiative heat exchanges and the ambient air temperatures on the cooling performance of the multilayer emitter are calculated. At the same time, the mechanism of radiative cooling is analyzed. All the results show that the proposed emitter can effectively achieve sub-ambient daytime radiative cooling. Due to the superior durability and mechanical robustness of the multilayer emitter, it may be a key element in the realization of energy-efficient radiative cooling devices.http://dx.doi.org/10.1063/5.0035138 |
| spellingShingle | Yeqing Zhu Yong-Hong Ye Dong Wang Yurong Cao Quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling AIP Advances |
| title | Quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling |
| title_full | Quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling |
| title_fullStr | Quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling |
| title_full_unstemmed | Quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling |
| title_short | Quasi-periodic selective multilayer emitter for sub-ambient daytime radiative cooling |
| title_sort | quasi periodic selective multilayer emitter for sub ambient daytime radiative cooling |
| url | http://dx.doi.org/10.1063/5.0035138 |
| work_keys_str_mv | AT yeqingzhu quasiperiodicselectivemultilayeremitterforsubambientdaytimeradiativecooling AT yonghongye quasiperiodicselectivemultilayeremitterforsubambientdaytimeradiativecooling AT dongwang quasiperiodicselectivemultilayeremitterforsubambientdaytimeradiativecooling AT yurongcao quasiperiodicselectivemultilayeremitterforsubambientdaytimeradiativecooling |