PERFORMANCE RESEARCH OF RADIAL-INFLOW TURBINE IN OCEAN THERMAL ENERGY CONVERSION

被引：0
|
作者：
Ding C. [1 ]
Liu X. [2 ]
Zhang C. [1 ]
Chen Y. [1 ]
机构：
[1] Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing
[2] College of Electrical，Energy and Power Engineering, Yangzhou University, Yangzhou
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 06期
关键词：
numerical simulation; ocean thermal energy conversion; organic Rankine cycle; R134a; radial-inflow turbine;
D O I：
10.19912/j.0254-0096.tynxb.2022-0079
中图分类号：
学科分类号：
摘要：
Aiming at the high-efficiency OTEC application，a 3 kW radial-inflow turbine using R134a was constructed. In addition，a 3D CFD simulation was carried out to research the turbine performance and analyze the variable conditions. Finally，the influences of radial clearance and the number of rotor blades on the performance of radial- inflow turbines are analyzed. It is indicated that the performance of the designed turbine is satisfactory with a theoretical isentropic efficiency of 84.96%. The results show that the optimal rotational speed of turbine increases with the increasement of inlet pressure. When the rotational speeds deviate from the optimal value，the turbine efficiency decreases. The results also indicate that the increasement of inlet pressure increases the output work of turbine. With the increasement of rotational speed，the flow rate gradually decreases. In terms of optimization，the radial clearance between the nozzle and the rotor makes the working fluid flow more uniform at the nozzle outlet. Finally，the turbine performance is improved by increasing the number of rotor blades to 8. © 2023 Science Press. All rights reserved.
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页码：1 / 7
页数：6
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