Demonstration of a small-scale power generator using supercritical CO2

被引:7
作者
Li, Ligeng [1 ]
Tian, Hua [1 ]
Lin, Xin [1 ]
Zeng, Xianyu [1 ]
Wang, Yurong [1 ]
Zhuge, Weilin [3 ]
Shi, Lingfeng [2 ]
Wang, Xuan [1 ]
Liang, Xingyu [1 ]
Shu, Gequn [1 ,2 ]
机构
[1] Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China
[2] Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230027, Peoples R China
[3] Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China
关键词
generator; performance map; power generation; supercritical CO2; turbine; BI METAL; NANOSHEETS; BIOBR; WATER; DEGRADATION; REDUCTION;
D O I
10.1002/cey2.428
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The supercritical CO2 (sCO(2)) power cycle could improve efficiencies for a wide range of thermal power plants. The sCO(2) turbine generator plays an important role in the sCO(2) power cycle by directly converting thermal energy into mechanical work and electric power. The operation of the generator encounters challenges, including high temperature, high pressure, high rotational speed, and other engineering problems, such as leakage. Experimental studies of sCO(2) turbines are insufficient because of the significant difficulties in turbine manufacturing and system construction. Unlike most experimental investigations that primarily focus on 100 kW- or MW-scale power generation systems, we consider, for the first time, a small-scale power generator using sCO(2). A partial admission axial turbine was designed and manufactured with a rated rotational speed of 40,000 rpm, and a CO2 transcritical power cycle test loop was constructed to validate the performance of our manufactured generator. A resistant gas was proposed in the constructed turbine expander to solve the leakage issue. Both dynamic and steady performances were investigated. The results indicated that a peak electric power of 11.55 kW was achieved at 29,369 rpm. The maximum total efficiency of the turbo-generator was 58.98%, which was affected by both the turbine rotational speed and pressure ratio, according to the proposed performance map.
引用
收藏
页数:22
相关论文
共 71 条
[21]   Startup and Operation of a Supercritical Carbon Dioxide Brayton Cycle [J].
Clementoni, Eric M. ;
Cox, Timothy L. ;
Sprague, Christopher P. .
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2014, 136 (07)
[22]   Performance Characteristics of an Operating Supercritical CO2 Brayton Cycle [J].
Conboy, Thomas ;
Wright, Steven ;
Pasch, James ;
Fleming, Darryn ;
Rochau, Gary ;
Fuller, Robert .
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2012, 134 (11)
[23]   Supercritical carbon dioxide cycles for power generation: A review [J].
Crespi, Francesco ;
Gavagnin, Giacomo ;
Sanchez, David ;
Martinez, Gonzalo S. .
APPLIED ENERGY, 2017, 195 :152-183
[24]  
Dyreby J.J., 2014, Modeling the Supercritical Carbon Dioxide Brayton Cycle with Recompression
[25]   Feasibility of dry cooling in supercritical CO2 power cycle in concentrated solar power application: Review and a case study [J].
Ehsan, M. Monjurul ;
Guan, Zhiqiang ;
Gurgenci, Hal ;
Klimenko, Alexander .
RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2020, 132
[26]  
Fleming D, 2012, PROCEEDINGS OF THE ASME TURBO EXPO 2012, VOL 5, P953
[27]  
Hasuike H., 2010, P ASME TURBO EXPO 20
[28]   Water-resistant organic thermoelectric generator with >10 μW output [J].
Hata, Shinichi ;
Maeshiro, Kanto ;
Shiraishi, Misaki ;
Yasuda, Soichiro ;
Shiozaki, Yuta ;
Kametani, Koudai ;
Du, Yukou ;
Shiraishi, Yukihide ;
Toshima, Naoki .
CARBON ENERGY, 2023, 5 (04)
[29]  
Held T. J., 2014, 4 INT S SUPERCRITICA, P9
[30]   Development and experimental study of a supercritical CO2 axial turbine applied for engine waste heat recovery [J].
Huang, Guangdai ;
Shu, Gequn ;
Tian, Hua ;
Shi, Lingfeng ;
Zhuge, Weilin ;
Zhang, Jing ;
Atik, Mohammad Atikur Rahman .
APPLIED ENERGY, 2020, 257