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Numerical investigation and verification on the inlet and exhaust housings of a supercritical carbon dioxide axial turbine
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Hongdan LIU1, 2, Lei WANG1, 3, Dong ZHOU1, 2, Guangju DAN1, Hongzhi LI4, Dan HE1, 3, Dejian DENG1
Thermal Power Generation | 2023, 52(6) : 135 - 145
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Thermal Power Generation | 2023, 52(6): 135-145
• Equipments research on S-CO2 cycle power generation system •
Numerical investigation and verification on the inlet and exhaust housings of a supercritical carbon dioxide axial turbine
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Hongdan LIU1, 2, Lei WANG1, 3, Dong ZHOU1, 2, Guangju DAN1, Hongzhi LI4, Dan HE1, 3, Dejian DENG1
Affiliations
  • 1.Chongqing Jiangjin Shipbuilding Industry Co., Ltd., Chongqing 402263, China
  • 2.National Engineering Research Center of Special Equipment and Power System for Ship and Marine Engineering, Shanghai 201108, China
  • 3.Key Laboratory of Marine Turbocharger Research, Chongqing Industry and Information Technology, Chongqing 402263, China
  • 4.Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710054, China
Published: 2023-06-25 doi: 10.19666/j.rlfd.202208231
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As the core equipment of supercritical carbon dioxide (S-CO2) Brayton cycle, there is a lack of reliable evaluation and test verification of the overall performance. An in-depth simulation and performance analysis of one axial turbine are carried out, focusing on the impact of inlet and exhaust housings with experiment results for different operating conditions. The results show that the numerical calculation method and model are able to evaluate the performance at different load conditions more accurately. Compared with the test results, the maximum efficiency error is 1.77 percentage point and the flow rate error remains within 5.6%. The crown pattern can reduce leakage and mixing losses, and increase efficiency by 1.4 percentage point compared to the common top clearance pattern. Simulation results show that the efficiency of turbine unit is reduced compared to turbine stage, with a maximum reduction by 2.9 percentage point. The flow loss of inlet and exhaust housings is the main reason for the reduction. The research results can provide technical support for the design and performance simulation of S-CO2 axial turbines.

supercritical carbon dioxide  /  axial turbine  /  asymmetric inlet and exhaust housings  /  crown  /  experiments
Hongdan LIU, Lei WANG, Dong ZHOU, Guangju DAN, Hongzhi LI, Dan HE, Dejian DENG. Numerical investigation and verification on the inlet and exhaust housings of a supercritical carbon dioxide axial turbine[J]. Thermal Power Generation, 2023 , 52 (6) : 135 -145 . DOI: 10.19666/j.rlfd.202208231
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  • National Key Research and Development Program(2018YFB1501004-4)
Appendix
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Year 2023 volume 52 Issue 6
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Article Info
doi: 10.19666/j.rlfd.202208231
  • Receive Date：2022-08-25
  • Online Date：2026-01-23
  • Published：2023-06-25
Article Data
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History
  • Received：2022-08-25
Funding
National Key Research and Development Program(2018YFB1501004-4)
Affiliations
    1.Chongqing Jiangjin Shipbuilding Industry Co., Ltd., Chongqing 402263, China
    2.National Engineering Research Center of Special Equipment and Power System for Ship and Marine Engineering, Shanghai 201108, China
    3.Key Laboratory of Marine Turbocharger Research, Chongqing Industry and Information Technology, Chongqing 402263, China
    4.Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710054, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202208231
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表12种不同金属材料的力学参数
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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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