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随着反应堆出口温度的提高,高效的动力转换技术已经成为(超)高温气冷堆的一个趋势。该文在HTR-10、HTR-10GT和HTR-PM研究的基础上,针对更高的堆芯出口温度,对高温气冷堆氦气透平循环的热力学参数进行分析、优化和设计。通过建立高温气冷堆的数学模型和优化模型,结合更符合工程经验的约束条件,确定了高温气冷堆氦气透平循环的2个设计工况点:1)接近目前工程经验的工况点,堆芯出口温度为850℃,继承HTR-10GT氦气压气机和透平的设计经验,循环压比为2.47,循环效率为47.60%;2)略带前瞻性的工况点,堆芯出口温度为900℃,堆芯入口温度为550℃,压气机压比为2.75,此时循环效率为48.92%。该文还基于这2个工况点对高温气冷堆氦气透平循环参数进行设计,将会对未来开发高温气冷堆闭式Brayton循环提供帮助。
As the reactor outlet temperature increases, efficient power conversion technology has become a (super) high temperature gas-cooled reactor trend. Based on the HTR-10, HTR-10GT and HTR-PM studies, the thermodynamic parameters of the helium turbine cycle in HTGR are analyzed, optimized and designed for higher core exit temperatures. Through establishing the mathematical model and optimization model of high temperature gas-cooled reactor and combining the constraints that are more in line with the engineering experience, two design working conditions of the helium turbine cycle of the HTGR are determined: 1) The working conditions close to current engineering experience Point, core outlet temperature of 850 ℃, inherited the HTR-10GT helium compressor and turbine design experience, the cycle pressure ratio of 2.47, the cycle efficiency of 47.60%; 2) slightly forward-looking operating conditions, the core The outlet temperature is 900 ℃, the core inlet temperature is 550 ℃ and the compressor pressure ratio is 2.75. The cycle efficiency is 48.92%. Based on these two operating points, this paper also designs the helium turbine cycle parameters of the HTGR, which will help to develop the closed Brayton cycle of HTGR in the future.