超声速氩气流磁流体发电初步实验研究(英文)

利用激波风洞,采用氦气驱动氩气,在平衡接触面运行方式下得到高温气体,通过在低压段注入电离种子K2CO3粉末,实现高温条件下导电流体的产生,开展了超声速氩气流磁流体功率提取初步实验研究。在喷管入口总压0.32MPa、总温6504K,磁场强度约0.5T、喷管出口气流速度1959m/s的条件下,对分段磁流体功率提取通道电极的感应电压和短路电流进行了测量,实验测量结果与理论计算相吻合,并由电压电流计算得出了平均电导率约20S/m左右,在负载系数为0.5的情况下,磁流体功率提取通道最大的功率密度可达4.7971MW/m3,最大焓提取率为0.34%。最后分析并给出了气体状态参数T1,M1,T2,M2的测试原理与方法。

Preliminary Experimental Investigation on MHD Power Generation Using Seeded Supersonic Argon Flow as Working Fluid

This paper presents a preliminary experimental investigation on magnetohydrodynamic (MHD) power generation using seeded supersonic argon flow as working fluid. Helium and argon are used as driver and driven gas respectively in a shock tunnel. Equilibrium contact surface operating mode is used to obtain high temperature gas, and the conductivity is obtained by adding seed K2CO3 powder into the driven section. Under the conditions of nozzle inlet total pressure being 0.32 MPa, total temperature 6 504 K, magnetic field density about 0.5 T and nozzle outlet velocity 1 959 m/s, induction voltage and short-circuit current of the segmentation MHD power generation channel are measured, and the experimental results agree with theoretical calculations; the average conductivity is about 20 S/m calculated from characteristics of voltage and current. When load factor is 0.5, the maximum power density of the MHD power generation channel reaches 4.797 1 MW/m3, and the maximum enthalpy extraction rate is 0.34%. Finally, the principle and method of indirect testing for gas state parameters are derived and analyzed.