دورية أكاديمية
Numerical design of dual-scale foams to enhance radiation absorption
| العنوان: | Numerical design of dual-scale foams to enhance radiation absorption |
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| المؤلفون: | Hong-Wei Chen, Fu-Qiang Wang, Yang Li, Chang-Hua Lin, Xin-Lin Xia, He-Ping Tan |
| المصدر: | AIMS Energy, Vol 9, Iss 4, Pp 842-853 (2021) |
| بيانات النشر: | AIMS Press, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Production of electric energy or power. Powerplants. Central stations LCC:Renewable energy sources |
| مصطلحات موضوعية: | structure design, dual-scale foam (dsf), porous strut, radiation, semitransparent, Production of electric energy or power. Powerplants. Central stations, TK1001-1841, Renewable energy sources, TJ807-830 |
| الوصف: | Unlike silicon carbide ceramic, the alumina ceramic and zirconia ceramic are by its very nature weakly absorbing in visible and near infrared wavebands. Therefore, open-cell foams made of such ceramics are rarely used in applications requiring strong absorption of radiation energy, such as solar absorbers. In order to improve the potential of such foams, open-cell foams with dual-scale pores were digitally designed in the limit of geometric optics. The first-order pores are obtained by Voronoi tessellation technique and then the second-order pores are realized by the design of 'porous strut'. A Monte Carlo Ray-tracing method is applied in the dual-scale foam structure for radiative transfer calculation. The parameterized study is conducted on the radiation absorption of alumina foam sheets and zirconia foam sheets. The results show that for the present cases, the designed dual-scale alumina foams with strut porosity ps = 0.3 can increase the normal absorptance within the wavebands from 0.4 μm to 7.0 μm by 62.7% than the foams with single-scale pores. For the zirconia foams, this increase is 115.9% within the wavebands from 1.2 μm to 7.6 μm. The findings can provide strong confidence on dual-scale foams to enhance the absorption of radiation energy in potential applications. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2333-8334 |
| Relation: | https://doaj.org/toc/2333-8334 |
| DOI: | 10.3934/energy.2021039?viewType=HTML |
| DOI: | 10.3934/energy.2021039 |
| URL الوصول: | https://doaj.org/article/f2bede21555d4ddba5fc5ec1cd5bc5ec |
| رقم الأكسشن: | edsdoj.f2bede21555d4ddba5fc5ec1cd5bc5ec |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23338334 |
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| DOI: | 10.3934/energy.2021039?viewType=HTML |