Flow and Heat Transfer Characteristics of S-CO<sub>2</sub> in a Vertically Rising Y-Tube
The supercritical carbon dioxide Brayton cycle has gradually become a research focus, but we also see a deficiency in research related to the flow and heat transfer characteristics of S-CO<sub>2</sub> boiler staves with high parameters. In this paper, the flow and heat transfer of superc...
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MDPI AG
2022-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/9/3312 |
| _version_ | 1827672638832508928 |
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| author | Xiaohong Hao Su Du Qiguo Yang Sen Zhang Qi Zhang |
| author_facet | Xiaohong Hao Su Du Qiguo Yang Sen Zhang Qi Zhang |
| author_sort | Xiaohong Hao |
| collection | DOAJ |
| description | The supercritical carbon dioxide Brayton cycle has gradually become a research focus, but we also see a deficiency in research related to the flow and heat transfer characteristics of S-CO<sub>2</sub> boiler staves with high parameters. In this paper, the flow and heat transfer of supercritical carbon dioxide is investigated in a 1000 MW supercritical boiler cooled wall tube in the parameters of a pressure of 30.42 MPa, a mass flux of 1592~2207 kg/(m<sup>2</sup>·s), and a heat flux of 39.8~71.2 kw/m<sup>2</sup>; a three-dimensional model of supercritical CO<sub>2</sub> fluid in the cooling wall tube is established with the RNG k-epsilon turbulence model. Numerical simulations are carried out according to the following boundary conditions: an adiabatic half side, a heated half side, and a Y-type three-way two-to-one. The effects of the mass flux, inlet temperature, and heat flux on the flow and heat transfer characteristics in the Y-tube are analyzed, which exerts great influence on the research of S-CO<sub>2</sub> boiler stave thermodynamics. |
| first_indexed | 2024-03-10T04:12:06Z |
| format | Article |
| id | doaj.art-61c7a07d58084f92a001c7bdb634d650 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T04:12:06Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-61c7a07d58084f92a001c7bdb634d6502023-11-23T08:09:31ZengMDPI AGEnergies1996-10732022-05-01159331210.3390/en15093312Flow and Heat Transfer Characteristics of S-CO<sub>2</sub> in a Vertically Rising Y-TubeXiaohong Hao0Su Du1Qiguo Yang2Sen Zhang3Qi Zhang4Institute of Advanced Power Equipment and Technology, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, ChinaInstitute of Advanced Power Equipment and Technology, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, ChinaInstitute of Advanced Power Equipment and Technology, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, ChinaInstitute of Advanced Power Equipment and Technology, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, ChinaInstitute of Advanced Power Equipment and Technology, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, ChinaThe supercritical carbon dioxide Brayton cycle has gradually become a research focus, but we also see a deficiency in research related to the flow and heat transfer characteristics of S-CO<sub>2</sub> boiler staves with high parameters. In this paper, the flow and heat transfer of supercritical carbon dioxide is investigated in a 1000 MW supercritical boiler cooled wall tube in the parameters of a pressure of 30.42 MPa, a mass flux of 1592~2207 kg/(m<sup>2</sup>·s), and a heat flux of 39.8~71.2 kw/m<sup>2</sup>; a three-dimensional model of supercritical CO<sub>2</sub> fluid in the cooling wall tube is established with the RNG k-epsilon turbulence model. Numerical simulations are carried out according to the following boundary conditions: an adiabatic half side, a heated half side, and a Y-type three-way two-to-one. The effects of the mass flux, inlet temperature, and heat flux on the flow and heat transfer characteristics in the Y-tube are analyzed, which exerts great influence on the research of S-CO<sub>2</sub> boiler stave thermodynamics.https://www.mdpi.com/1996-1073/15/9/3312supercritical CO<sub>2</sub>heat transfer characteristicsnumerical simulation |
| spellingShingle | Xiaohong Hao Su Du Qiguo Yang Sen Zhang Qi Zhang Flow and Heat Transfer Characteristics of S-CO<sub>2</sub> in a Vertically Rising Y-Tube Energies supercritical CO<sub>2</sub> heat transfer characteristics numerical simulation |
| title | Flow and Heat Transfer Characteristics of S-CO<sub>2</sub> in a Vertically Rising Y-Tube |
| title_full | Flow and Heat Transfer Characteristics of S-CO<sub>2</sub> in a Vertically Rising Y-Tube |
| title_fullStr | Flow and Heat Transfer Characteristics of S-CO<sub>2</sub> in a Vertically Rising Y-Tube |
| title_full_unstemmed | Flow and Heat Transfer Characteristics of S-CO<sub>2</sub> in a Vertically Rising Y-Tube |
| title_short | Flow and Heat Transfer Characteristics of S-CO<sub>2</sub> in a Vertically Rising Y-Tube |
| title_sort | flow and heat transfer characteristics of s co sub 2 sub in a vertically rising y tube |
| topic | supercritical CO<sub>2</sub> heat transfer characteristics numerical simulation |
| url | https://www.mdpi.com/1996-1073/15/9/3312 |
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