Small turbines must operate at high rotational speeds to generate adequate output power. In this study, a radial inflow turbine using R245fa as the working fluid is miniaturised and is designed to have a rotational speed of 30,000 r/min. The organic Rankine cycle system is not simplified, and a preheater and a superheater are installed. The turbine is experimentally analysed in the organic Rankine cycle system. The experimental results show that with an increase in the inlet pressure, the turbine output power and system efficiency increase; moreover, the turbine efficiency first decreases and then increases slightly after the pressure exceeds 1.5 MPa. The turbine efficiency decreases first and then increases and attains the minimum value at an inlet temperature of 100°C–105°C. When the flow rate is 0.82 m³/s, the speed reaches its maximum value of 28,000 r/min, and a maximum output power of 17.37 kW is generated. The maximum efficiency of the turbine is 0.885 and that of the system is 0.1625. The experimental data and design parameters of the turbine provide a reference for further design optimization.

小型涡轮机必须以高转速运行，以产生足够的输出功率。在这项研究中，使用R245fa作为工作流体的径流式涡轮机被小型化，其转速设计为30,000 r / min。有机朗肯循环系统没有简化，并且安装了预热器和过热器。在有机朗肯循环系统中对涡轮进行了实验分析。实验结果表明，随着进气压力的增加，透平的输出功率和系统效率提高。此外，涡轮效率首先降低，然后在压力超过1.5 MPa后略有增加。在入口温度为100°C–105°C时，涡轮效率先降低然后升高，并达到最小值。流量为0.82 m ^3时/ s，速度达到最大值28,000 r / min，并产生了17.37 kW的最大输出功率。涡轮机的最大效率为0.885，系统的最大效率为0.1625。涡轮的实验数据和设计参数为进一步的设计优化提供了参考。