Solar absorber with a structured surface – A way to increase efficiency
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F19%3A00508585" target="_blank" >RIV/68081731:_____/19:00508585 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26210/19:PU131994
Result on the web
<a href="https://ojs.cvut.cz/ojs/index.php/ap/article/view/5191" target="_blank" >https://ojs.cvut.cz/ojs/index.php/ap/article/view/5191</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/AP.2019.59.0134" target="_blank" >10.14311/AP.2019.59.0134</a>
Alternative languages
Result language
angličtina
Original language name
Solar absorber with a structured surface – A way to increase efficiency
Original language description
The basic idea of a solar absorber's thermal gain increase is the keyhole effect utilization during which the radiation is absorbed by multiple reflections on cavity walls. The lattice of pyramidal or conical cavities on the solar absorber surface can be formed to create a structured surface leading to its overall absorptivity increase and to a reduction of the surface absorptivity dependence on the solar radiation incident beam angle changes caused by the daily and annual solar cycles. This contribution concludes the results of simulations of the effect of cavity geometry, geographical position and absorber orientation on its thermal gain with respect to the technological manufacturability of cavities. Furthermore, the real construction of the absorber with a structured surface using laser welding and parallel hydroforming is briefly described.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20704 - Energy and fuels
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta polytechnica
ISSN
1210-2709
e-ISSN
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Volume of the periodical
59
Issue of the periodical within the volume
2
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
10
Pages from-to
134-143
UT code for WoS article
000473355400004
EID of the result in the Scopus database
2-s2.0-85067311254