DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Minwoo | ko |
dc.contributor.author | Seo, Junyong | ko |
dc.contributor.author | Yoon, Siwon | ko |
dc.contributor.author | Nam, Youngsuk | ko |
dc.contributor.author | Lee, Jungchul | ko |
dc.contributor.author | Lee, Bong Jae | ko |
dc.date.accessioned | 2022-07-26T03:00:17Z | - |
dc.date.available | 2022-07-26T03:00:17Z | - |
dc.date.created | 2022-07-26 | - |
dc.date.created | 2022-07-26 | - |
dc.date.issued | 2022-09 | - |
dc.identifier.citation | APPLIED THERMAL ENGINEERING, v.214 | - |
dc.identifier.issn | 1359-4311 | - |
dc.identifier.uri | http://hdl.handle.net/10203/297481 | - |
dc.description.abstract | For passive radiative cooling applications, all-day harvested cold energy is an essential performance indicator concerning its long-term and continuous operation. To this end, high mid-infrared emissivity of emitter surface is a key parameter for steadily boosting the net cooling power regardless of the time-varying environment. In this work, hexagonal-array grating-patterned PDMS film on a silver reflector is proposed for efficient 'all-day' radiative cooling. The optimized grating structure achieves the weighted emissivity of 0.985 in the atmospheric transparent window with the solar reflectivity of 0.933, leading to the predicted all-day average cooling power of 85 ~ 130 W/m(2). We also show from outdoor experiments that the proposed structure can produce 4.1 6.3 W/m(2) extra all-day cooling power compared to a flat PDMS emitter. Furthermore, the grating-patterned surface introduces self-cleaning feature that is desirable for long-term usage. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | All-day radiative cooling using a grating-patterned PDMS film emitter | - |
dc.type | Article | - |
dc.identifier.wosid | 000823308500005 | - |
dc.identifier.scopusid | 2-s2.0-85132224251 | - |
dc.type.rims | ART | - |
dc.citation.volume | 214 | - |
dc.citation.publicationname | APPLIED THERMAL ENGINEERING | - |
dc.identifier.doi | 10.1016/j.applthermaleng.2022.118771 | - |
dc.contributor.localauthor | Nam, Youngsuk | - |
dc.contributor.localauthor | Lee, Jungchul | - |
dc.contributor.localauthor | Lee, Bong Jae | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | All-day radiative cooling | - |
dc.subject.keywordAuthor | Hexagonal-array grating-patterned PDMS film | - |
dc.subject.keywordAuthor | Heat flux measurement | - |
dc.subject.keywordAuthor | Self cleaning | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | SURFACES | - |
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