Radiant absorption characteristics of corrugated curved tubes
The utilization of modern paraboloidal concentrators for conversion of solar radiation into heat energy requires the development and implementation of compact and efficient heat absorbers. Accurate estimation of geometry influence on absorption characteristics of receiver tubes is an important step...
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VINCA Institute of Nuclear Sciences
2017-01-01
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Online Access: | http://www.doiserbia.nb.rs/img/doi/0354-9836/2017/0354-98361600263D.pdf |
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doaj-ba2d98bbc5854c69bd557241694482eb2021-01-02T11:54:02ZengVINCA Institute of Nuclear SciencesThermal Science0354-98362334-71632017-01-01216 Part B2897290610.2298/TSCI160420263D0354-98361600263DRadiant absorption characteristics of corrugated curved tubesĐorđević Milan Lj.0Stefanović Velimir P.1Kalaba Dragan V.2Mančić Marko V.3Katinić Marko D.4Faculty of Technical Sciences, Kosovska MitrovicaFaculty of Mechanical Engineering, NišFaculty of Technical Sciences, Kosovska MitrovicaFaculty of Mechanical Engineering, NišCollege of Slavonski Brod, Slavonski Brod, CroatiaThe utilization of modern paraboloidal concentrators for conversion of solar radiation into heat energy requires the development and implementation of compact and efficient heat absorbers. Accurate estimation of geometry influence on absorption characteristics of receiver tubes is an important step in this process. This paper deals with absorption characteristics of heat absorber made of spirally coiled tubes with transverse circular corrugations. Detailed 3-D surface-to-surface Hemicube method was applied to compare radiation performances of corrugated and smooth curved tubes. The numerical results were obtained by varying the tube curvature ratio and incident radiant heat flux intensity. The details of absorption efficiency of corrugated tubes and the effect of curvature on absorption properties for both corrugated and smooth tubes were presented. The results may have significance to further analysis of highly efficient heat absorbers exposed to concentrated radiant heating. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 42006]http://www.doiserbia.nb.rs/img/doi/0354-9836/2017/0354-98361600263D.pdfheat absorberscorrugated tubesspiral coilabsorption efficiency |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Đorđević Milan Lj. Stefanović Velimir P. Kalaba Dragan V. Mančić Marko V. Katinić Marko D. |
spellingShingle |
Đorđević Milan Lj. Stefanović Velimir P. Kalaba Dragan V. Mančić Marko V. Katinić Marko D. Radiant absorption characteristics of corrugated curved tubes Thermal Science heat absorbers corrugated tubes spiral coil absorption efficiency |
author_facet |
Đorđević Milan Lj. Stefanović Velimir P. Kalaba Dragan V. Mančić Marko V. Katinić Marko D. |
author_sort |
Đorđević Milan Lj. |
title |
Radiant absorption characteristics of corrugated curved tubes |
title_short |
Radiant absorption characteristics of corrugated curved tubes |
title_full |
Radiant absorption characteristics of corrugated curved tubes |
title_fullStr |
Radiant absorption characteristics of corrugated curved tubes |
title_full_unstemmed |
Radiant absorption characteristics of corrugated curved tubes |
title_sort |
radiant absorption characteristics of corrugated curved tubes |
publisher |
VINCA Institute of Nuclear Sciences |
series |
Thermal Science |
issn |
0354-9836 2334-7163 |
publishDate |
2017-01-01 |
description |
The utilization of modern paraboloidal concentrators for conversion of solar radiation into heat energy requires the development and implementation of compact and efficient heat absorbers. Accurate estimation of geometry influence on absorption characteristics of receiver tubes is an important step in this process. This paper deals with absorption characteristics of heat absorber made of spirally coiled tubes with transverse circular corrugations. Detailed 3-D surface-to-surface Hemicube method was applied to compare radiation performances of corrugated and smooth curved tubes. The numerical results were obtained by varying the tube curvature ratio and incident radiant heat flux intensity. The details of absorption efficiency of corrugated tubes and the effect of curvature on absorption properties for both corrugated and smooth tubes were presented. The results may have significance to further analysis of highly efficient heat absorbers exposed to concentrated radiant heating. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 42006] |
topic |
heat absorbers corrugated tubes spiral coil absorption efficiency |
url |
http://www.doiserbia.nb.rs/img/doi/0354-9836/2017/0354-98361600263D.pdf |
work_keys_str_mv |
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