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Simulation and experimental research on heat exchange performance of supercritical CO2 in helical tube
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Chunjie XIA, Jialiang SONG, Yongdong CHEN, Xiaohong WU
Thermal Power Generation | 2023, 52(11) : 37 - 45
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Thermal Power Generation | 2023, 52(11): 37-45
• Special topic on supercritical carbon dioxide cycle power generation technology •
Simulation and experimental research on heat exchange performance of supercritical CO2 in helical tube
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Chunjie XIA, Jialiang SONG, Yongdong CHEN, Xiaohong WU
Affiliations
  • Hefei General Machinery Research Institute Co, Ltd, Hefei 230031, China
Published: 2023-11-25 doi: 10.19666/j.rlfd.202301004
Outline
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Numerical and experimental studies are conducted on convective heat transfer performance of carbon dioxide (S-CO2) flowing in a heated vertical helically coiled tube under supercritical pressure. The influence of flow characteristics and structural characteristics such as heat flux q, mass flow rate G, pitch P, tube inner diameter d, and spiral radius R on heat transfer are discussed, and the sensitivity of each structural parameter is studied quantitatively. A closed-loop S-CO2 test platform was built to conduct experimental research on the convective heat transfer performance of S-CO2 in the helically coiled tube, and the accuracy of the numerical simulation is verified based on the experimental data. Finally, the heat transfer correlation of S-CO2 is fitted. The research has laid foundation for the thermal design method of S-CO2 spiral-wound heat exchanger, and has certain engineering application value for the application and promotion of the spiral-wound S-CO2 heat exchangers in nuclear power and solar thermal power generations.

spiral-wound heat exchanger  /  supercritical carbon dioxide Brayton cycle  /  heat transfer performance  /  numerical simulation
Chunjie XIA, Jialiang SONG, Yongdong CHEN, Xiaohong WU. Simulation and experimental research on heat exchange performance of supercritical CO2 in helical tube[J]. Thermal Power Generation, 2023 , 52 (11) : 37 -45 . DOI: 10.19666/j.rlfd.202301004
Funding
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  • Anhui Provincial Natural Science Foundation General Project(2008085ME152)
Appendix
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Year 2023 volume 52 Issue 11
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138
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Article Info
doi: 10.19666/j.rlfd.202301004
  • Receive Date：2023-01-19
  • Online Date：2026-01-26
  • Published：2023-11-25
Article Data
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History
  • Received：2023-01-19
Funding
Anhui Provincial Natural Science Foundation General Project(2008085ME152)
Affiliations
    Hefei General Machinery Research Institute Co, Ltd, Hefei 230031, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202301004
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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