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Nusselt number prediction for oil and water in solar tubular cavity receivers

In this study, a numerical model was developed for prediction of Nusselt number in solar cavity receivers. Thermal oil and water were used as the working fluid. A dish concentrator with different shapes of the cavity receiver, including hemispherical, cylindrical, and cubical, was investigated. The...

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Main Authors: Reyhaneh, Loni, Gholamhassan, Najafi, Rizalman, Mamat, Mohamed, Mazlan, Nor Azwadi, Che Sidik
Format: Article
Language:English
Published: Akademi Baru 2022
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://umpir.ump.edu.my/id/eprint/33679/1/Nusselt%20Number%20Prediction%20for%20Oil%20and%20Water%20in%20Solar%20Tubular.pdf
http://umpir.ump.edu.my/id/eprint/33679/
http://dx.doi.org/10.37934/arfmts.97.2.157174
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spelling my.ump.umpir.336792023-05-15T04:35:35Z http://umpir.ump.edu.my/id/eprint/33679/ Nusselt number prediction for oil and water in solar tubular cavity receivers Reyhaneh, Loni Gholamhassan, Najafi Rizalman, Mamat Mohamed, Mazlan Nor Azwadi, Che Sidik TJ Mechanical engineering and machinery In this study, a numerical model was developed for prediction of Nusselt number in solar cavity receivers. Thermal oil and water were used as the working fluid. A dish concentrator with different shapes of the cavity receiver, including hemispherical, cylindrical, and cubical, was investigated. The different shapes of cavity receiver were studied under the same operating conditions for prediction of the internal heat transfer coefficient correlation for each cavity receiver. The system is investigated under the variation of solar radiation, flow rate, and inlet temperature of solar working fluids. The developed thermal model is validated based on the experimental data for the cylindrical cavity receiver using thermal oil. The results reveal that the hemispherical cavity receiver had the highest cavity heat gain, heat transfer coefficient, and Nusselt number values compared to two other cavity receivers. It could be concluded that the cavity heat gain, and heat transfer coefficient, and Nusselt number amounts had improved with increasing solar radiation, increasing flow rate, and decreasing inlet temperature of the working fluid. Some equations were suggested for prediction of Nusselt number with the variation of solar radiation, flow rate of the working fluid, and inlet temperature of working. It was concluded that application of thermal oil had resulted in higher Nusselt numbers than the use of water as the solar working fluid. Consequently, the application of oil is suggested for high-temperature systems. Akademi Baru 2022-09 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/33679/1/Nusselt%20Number%20Prediction%20for%20Oil%20and%20Water%20in%20Solar%20Tubular.pdf Reyhaneh, Loni and Gholamhassan, Najafi and Rizalman, Mamat and Mohamed, Mazlan and Nor Azwadi, Che Sidik (2022) Nusselt number prediction for oil and water in solar tubular cavity receivers. Journal of Advanced Research in Numerical Heat Transfer, 97 (2). pp. 157-174. ISSN 2289-7879 http://dx.doi.org/10.37934/arfmts.97.2.157174
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Reyhaneh, Loni
Gholamhassan, Najafi
Rizalman, Mamat
Mohamed, Mazlan
Nor Azwadi, Che Sidik
Nusselt number prediction for oil and water in solar tubular cavity receivers
description In this study, a numerical model was developed for prediction of Nusselt number in solar cavity receivers. Thermal oil and water were used as the working fluid. A dish concentrator with different shapes of the cavity receiver, including hemispherical, cylindrical, and cubical, was investigated. The different shapes of cavity receiver were studied under the same operating conditions for prediction of the internal heat transfer coefficient correlation for each cavity receiver. The system is investigated under the variation of solar radiation, flow rate, and inlet temperature of solar working fluids. The developed thermal model is validated based on the experimental data for the cylindrical cavity receiver using thermal oil. The results reveal that the hemispherical cavity receiver had the highest cavity heat gain, heat transfer coefficient, and Nusselt number values compared to two other cavity receivers. It could be concluded that the cavity heat gain, and heat transfer coefficient, and Nusselt number amounts had improved with increasing solar radiation, increasing flow rate, and decreasing inlet temperature of the working fluid. Some equations were suggested for prediction of Nusselt number with the variation of solar radiation, flow rate of the working fluid, and inlet temperature of working. It was concluded that application of thermal oil had resulted in higher Nusselt numbers than the use of water as the solar working fluid. Consequently, the application of oil is suggested for high-temperature systems.
format Article
author Reyhaneh, Loni
Gholamhassan, Najafi
Rizalman, Mamat
Mohamed, Mazlan
Nor Azwadi, Che Sidik
author_facet Reyhaneh, Loni
Gholamhassan, Najafi
Rizalman, Mamat
Mohamed, Mazlan
Nor Azwadi, Che Sidik
author_sort Reyhaneh, Loni
title Nusselt number prediction for oil and water in solar tubular cavity receivers
title_short Nusselt number prediction for oil and water in solar tubular cavity receivers
title_full Nusselt number prediction for oil and water in solar tubular cavity receivers
title_fullStr Nusselt number prediction for oil and water in solar tubular cavity receivers
title_full_unstemmed Nusselt number prediction for oil and water in solar tubular cavity receivers
title_sort nusselt number prediction for oil and water in solar tubular cavity receivers
publisher Akademi Baru
publishDate 2022
url http://umpir.ump.edu.my/id/eprint/33679/1/Nusselt%20Number%20Prediction%20for%20Oil%20and%20Water%20in%20Solar%20Tubular.pdf
http://umpir.ump.edu.my/id/eprint/33679/
http://dx.doi.org/10.37934/arfmts.97.2.157174
_version_ 1768006857659514880
score 13.211869

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