超临界二氧化碳布雷顿循环与有机朗肯循环联合核制氢系统的热力学分析与优化,International Journal of Energy Research

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超临界二氧化碳布雷顿循环与有机朗肯循环联合核制氢系统的热力学分析与优化
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2021-08-26 , DOI: 10.1002/er.7208
Qi Wang ₁ , Chunyu Liu ₁ , Run Luo _{1,

2} , Dantong Li ₃ , Rafael Macián‐Juan ₁

Affiliation

高效的超临界二氧化碳布雷顿循环（SCBC）是一种非常有前景的热力学循环，可替代蒸汽朗肯循环（SRC）作为核制氢（NHP）系统的动力循环。然而，目前尚未对使用 SCBC 作为动力循环的 NHP 系统进行详细研究，系统的热力学特性尚不清楚。为了填补这一研究空白，本文提出并研究了三种有前途的超高温气冷反应堆和基于铜氯循环的 NHP 系统，这些系统使用不同的功率循环，包括 SRC、SCBC 以及 SCBC 和有机朗肯循环 (ORC)。工作。分别采用能量和火用分析方法和粒子群优化算法对系统进行建模和优化。此外，基于两个典型的反应器概念进行了参数分析，以全面研究系统的热力学特性。最后，对三种系统在不同制氢负荷下的性能进行了比较。主要结果表明，在不同的制氢负荷下，基于 SCBC 的 NHP 系统的热力学性能变化对反应器入口温度敏感。在低反应器入口温度（≤587°C）下，SCBC 的热效率低于 37%。此外，提高SCBC的压缩机压比可以提高系统的热力学性能，使用ORC后系统的热效率和火用效率分别提高了约0.7%~3.7%和1.0%~5.3%。

"点击查看英文标题和摘要"

Thermodynamic analysis and optimization of the combined supercritical carbon dioxide Brayton cycle and organic Rankine cycle-based nuclear hydrogen production system

The Supercritical Carbon Dioxide Brayton Cycle (SCBC) with high efficiency is a very promising thermodynamic cycle to replace the Steam Rankine Cycle (SRC) as the power cycle of a Nuclear Hydrogen Production (NHP) system. However, detailed research on the NHP system using SCBC as a power cycle has not been carried out so far and the system's thermodynamic characteristics are not well known. To fill this research gap, three promising very high-temperature gas-cooled reactor and copper-chlorine cycle-based NHP systems using different power cycles including SRC, SCBC, and combined SCBC and Organic Rankine Cycle (ORC) are proposed and studied in this work. The energy and exergy analysis method and the particle-swarm optimization algorithm have been used respectively to model and optimize the system. In addition, a parametric analysis based on two typical reactor concepts has been performed to comprehensively investigate the system's thermodynamic characteristics. Finally, a performance comparison of three systems under different hydrogen production loads has been conducted. Major results show that under different hydrogen production loads, the variations in the thermodynamic performance of the SCBC-based NHP system are sensitive to the reactor inlet temperature. Under low reactor inlet temperatures (≤587°C), the thermal efficiency of the SCBC is less than 37%. Besides, increasing the compressor pressure ratio of SCBC can enhance the system's thermodynamic performance, and the system's thermal and exergy efficiencies are improved by about 0.7% to 3.7% and 1.0% to 5.3% respectively by using ORC.

更新日期：2021-08-26

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